What Happened in HVAC in 2025 — 20 Key Developments

1. The Refrigerant Phase-Out Takes Effect — R-410A Out, A2L Refrigerants In

On January 1, 2025, the U.S. regulatory environment shifted dramatically for HVAC systems. Under the framework of the Environmental Protection Agency (EPA) and the American Innovation and Manufacturing Act (AIM Act), manufacturing of HVAC equipment using high-Global Warming Potential (GWP) refrigerants — notably R-410A — was phased out. New systems now must use lower-GWP refrigerants such as R-454B or R-32. ACIQ+2Riteway AC+2
This shift aims to reduce the environmental footprint of HVAC systems, but it also introduced challenges: supply shortages for A2L-rated refrigerants, increased equipment prices due to added safety and compliance requirements, and a steep learning curve for contractors that must become certified in new refrigerant handling protocols. HVAC Informed+2ACHR News+2

Other key impacts: older systems using R-410A remain serviceable, but long-term maintenance is likely to grow more expensive, and new installs in 2025 and beyond will bear the burden of compliance. Superior CO-OP HVAC+1

2. The Rise of Heat Pumps and Electrified HVAC — “Electric is the Future”

One of the major themes of 2025 was accelerated adoption of heat pump technology. Heat pumps — especially advanced systems capable of operating efficiently even in cold climates — made big gains in both residential and commercial sectors. HVAC Informed+2Building Decarbonization Coalition+2

The drive toward electrification reflects broader decarbonization goals. For many building owners and facility managers, switching from fossil-fuel-based furnaces or boilers to all-electric heat pump solutions meant long-term energy savings, reduced carbon footprint, and compliance with emerging efficiency and environmental standards. Building Decarbonization Coalition+2Merlin Monitor+2

As climate policy and incentives from governments push toward cleaner energy, heat pumps are increasingly seen not as a niche alternative, but as the default for new HVAC installs or major retrofits. ACHR News+1

3. The 2025 AHR Expo: Industry’s Big Showcase for Change

In February 2025, the AHR Expo (held in Orlando) served as a major inflection point — showing where the HVACR market is headed. Attendance was strong (50,807 participants), and hundreds of exhibitors displayed the latest in equipment, controls, refrigerants, and smart automation. ACHR News+2Avnan+2

Key themes at the show included: transition to A2L refrigerants, proliferation of smart/IoT-enabled HVAC equipment, rising demand for high-efficiency systems, and increased emphasis on sustainability and decarbonization. ACHR News+2HVAC Informed+2

For many contractors and building owners, AHR Expo 2025 underscored that changes already underway — in regulation, product design, and market demand — are not temporary: they represent a new baseline for the entire industry. Avnan+1

4. Efficiency Standards Tighten — New DOE/EPA Rules on SEER, HSPF and More

In 2025, minimum efficiency requirements for HVAC equipment got more demanding. Compliance with upgraded standards for cooling (SEER/SEER2), heating (HSPF2), and overall fuel utilization (AFUE) became more widespread, pushing manufacturers to produce more efficient and greener systems. Northstar HVAC/R+2Mar-Hy Distributors+2

For building owners with older HVAC systems, this raised the cost-benefit bar for replacement vs. maintenance. For new installations, it meant choosing systems designed for long-term energy savings — and possibly qualifying for incentives or rebates tied to efficiency and environmental performance. Northstar HVAC/R+1

5. Smart & AI-Driven HVAC Control Gains Traction

2025 saw increased interest in integrating AI, IoT, and data-driven controls into HVAC systems. One recent academic study, for example, proposed a “Human-in-the-Loop” (HITL) framework that adapts HVAC operation based on real-time user feedback and changing electricity market prices — improving comfort while reducing energy costs. arXiv+1

Meanwhile, other studies focused on advanced ventilation and air-quality control: a data-driven operator learning model showed how machine-learning + ventilation controls can optimize airflow and maintain indoor air quality while minimizing energy use. arXiv

The result: HVAC is no longer “set it and forget it.” Smart, responsive controls are becoming a core part of system design — especially for larger or multi-zone buildings. HVAC Informed+1

6. Widespread Adoption of VRF & Hybrid VRF Systems in Commercial Settings

Variable Refrigerant Flow (VRF) systems — long favored in niche commercial projects — saw a surge in 2025 adoption. The shift is driven by their flexibility, efficiency, and suitability for buildings needing simultaneous heating and cooling, or varied climate zones (e.g., offices, hotels, schools). Merlin Monitor+2HVAC Informed+2

Hybrid VRF systems (some combining refrigerant with water-based distribution) also gained traction, particularly in retrofit projects replacing legacy chillers or boilers. These hybrid systems offer decarbonization potential while lowering operational expenses. HVAC Informed+1

As more building owners look to reduce emissions and energy costs, VRF — once a “premium” option — is becoming mainstream. ACHR News+1

7. Market Disruptions: Refrigerant Shortages, Pricing Challenges, Supply-Chain Strain

The transition to A2L refrigerants wasn’t smooth. Many contractors and distributors reported supply shortages, difficulty procuring sufficient refrigerant for new installs, and delays in project timelines. ACIQ+2HVAC Informed+2

The result: some homeowners and building managers postponed HVAC upgrades or chose to stick with older R-410A systems (while still possible), creating a temporary “two-speed” market. Others opted for alternative solutions — like heat pumps, VRF, or heat-pump water heaters — that avoid refrigerant supply constraints altogether. Harvest Thermal+2Merlin Monitor+2

8. Increased Demand for Training & Workforce — Technicians Need New Skills Fast

With the new refrigerants, heat-pump systems, VRF technology, and smart/AI-driven controls, the skill set required of HVAC professionals expanded rapidly in 2025. Contractors must now be certified in handling A2L refrigerants, familiar with modern heat-pump installation and maintenance procedures, and capable of commissioning smart control systems. HVAC Informed+2Mar-Hy Distributors+2

This has exacerbated an existing labor shortage in HVAC, but also opened opportunities for training, specialization, and higher-value services. For many smaller HVAC firms, the transition represents a strategic inflection point — adapt or risk being left behind. Mar-Hy Distributors+1

9. Air-to-Water Heat Pumps & Thermal Storage Gain Ground — Toward Electrified HVAC for Heating Season

This year brought broader adoption of air-to-water heat pump (AWHP) systems, especially in colder climates or where building plumbing is compatible. AWHPs offer a flexible, all-electric alternative to boilers, often with better efficiency and easier integration in retrofit and new-build projects. Harvest Thermal+1

In many cases, AWHPs were being specified alongside thermal storage solutions — for example, using heat-pump water heaters (HPWHs) controlled with predictive algorithms to store hot water or heat during low energy-cost periods. Early field studies showed promising energy savings using model-predictive control (MPC) for HPWHs. arXiv+1

For building owners and developers focused on decarbonization and resilience, AWHP + thermal storage began to look like a “future-proof” heating and hot-water solution in 2025.

10. Smart HVAC Controls & Zoning Surge — Targeted Comfort, Lower Energy Use

Multi-zone HVAC control got a real boost in 2025. With rising energy costs, upgraded refrigerant mandates, and more homes/buildings requiring flexible comfort control, zoning systems gained traction — especially those that are easy to install, compatible with existing equipment, and can integrate with smart thermostats. ZoningSupply.com - Zone Control+2Ecology Jay+2

On that front, Ecojay’s release of SmartZone-4X 3.0 and SmartZone-3X 3.0 marked a notable milestone. The new 2025 controllers offer universal compatibility (gas, electric, heat pump, dual fuel, etc.), support for up to 20 zones (expandable), built-in fresh-air and economizer controls, de-humidification/de-humid modes, and configurable multi-stage control — all in a controller that installs far more simply than many legacy zone boards. Ecojay Products

The “3.0” update includes an improved bright color display, LED diagnostics on every terminal, fresh-air intake and humidity/economizer options — making zoning more accessible and practical for retrofits and new builds alike. EcoJay Products

For many homeowners and smaller commercial buildings that struggled with temperature imbalance, variable occupancy, or ductless HVAC discomfort — zoning with modern controllers became a go-to solution in 2025. As one distributor summary put it: for many applications, SmartZone 4X (or 3X) is the “clear winner” for universal compatibility, ease of install, and long-term reliability. ZoningSupply.com - Zone Control

11. Adoption of Smart Zoning & Dampers — Precision Airflow Control Comes of Age

Beyond just zone controllers, 2025 also saw growing interest in integrating smart dampers and automated airflow controls in HVAC systems. This allows for even finer-grained control: each zone’s airflow can be adjusted not just by thermostats, but by damper status, supply-air sensors, and system logic responding to occupancy, air quality, or humidity. EcoJay SmartZone Spec

When combined with Ecojay’s SmartZone 3.0 / 4X 3.0 platforms, these systems can offer multi-zone control, fresh air ventilation, economy modes, staged heating/cooling, and dehumidification — all with a relatively simple, retrofit-friendly install.

This trend — toward airflow optimization rather than “one-size-fits-all” heating/cooling — reflects a broader shift in HVAC: from brute-force temperature control to intelligent, adaptive comfort systems.

12. Smart / AI-Powered Building HVAC Controls — From Theory to Real Deployments

Several research efforts published in 2025 pushed HVAC control past fixed schedules and static algorithms: machine-learning, occupancy detection, predictive control, and feedback-driven comfort management moved from labs into real-world simulation and field-test phases. arXiv+2arXiv+2

For example, one “Human-in-the-Loop” (HITL) model dynamically adapts HVAC operation based on user feedback and changing electricity prices, improving comfort while reducing energy consumption. arXiv

Another framework used neural-operator learning to optimize ventilation airflow and vent angles, offering substantial energy savings while maintaining indoor air quality. arXiv

As smart building technology becomes more common, these approaches could reshape how HVAC systems are designed, installed, and operated — especially in larger residential complexes, offices, or other multi-occupancy buildings.

13. Security & Privacy Research — HVAC Systems as Attack Surfaces

2025 wasn’t all about efficiency and comfort — researchers also flagged emerging risks tied to the increasing complexity and connectivity of HVAC systems. One academic paper introduced a framework for detecting cyber-physical attacks on HVAC components (sensors, actuators, networked controllers), using machine-learning to catch anomalies while preserving privacy. arXiv

Even more startling: another study demonstrated that common HVAC pressure sensors can be used to reconstruct intelligible human speech — meaning that HVAC systems might inadvertently become privacy or eavesdropping vulnerabilities. arXiv+1

These findings introduced a new set of concerns for building owners and managers: as HVAC becomes smarter and more connected, security and privacy need to become part of the spec.

14. Thermal Storage + Heat-Pump Water Heaters — A New Combo for Efficient Heating & Hot Water

Leveraging smart control and predictive algorithms, heat-pump water heaters (HPWH) paired with thermal storage — once thought of as a premium add-on — began to emerge as a viable, practical solution for many homes and multifamily buildings. A recent field study showed that a 120 V HPWH managed by a model-predictive control (MPC) system could pre-heat water ahead of demand, reduce energy costs by ~23–28%, and slash energy waste compared to traditional systems. arXiv

For developers and retrofit specialists, the appeal is clear: combined with A2L-compliant heat pumps or all-electric HVAC systems, thermal storage + HPWH offers low-carbon, efficient heating and hot-water — and reduced dependence on gas or fossil fuel systems going forward.

15. Retrofits & Upgrades Surge — Aging Systems, New Standards, and High Demand

Faced with new refrigerant regulations, rising energy costs, and pressure to decarbonize, many homeowners and building owners opted in 2025 to upgrade or retrofit older HVAC systems rather than continue band-aid repairs. This included replacing older R-410A systems, installing all-electric heat pumps, adding zoning boards and dampers, or integrating smart controls for better efficiency.

Contractors and distributors reported a spike in remodel and retrofit requests — especially from clients seeking to bring older systems into compliance or improve comfort in older homes and small commercial buildings. ACHR News+2HVAC Informed+2

These trends signal that 2025 — more than a regulatory transition year — may be a peak moment for modernizing America’s HVAC stock.

16. Renewable & Geothermal HVAC Solutions Gain More Attention

As decarbonization momentum grew, the industry saw renewed interest in geothermal heating/cooling, solar-assisted HVAC, and other renewable-energy–integrated solutions. Contractors and stakeholders began to position these technologies not just as “green” options, but as viable long-term alternatives, especially where clients wanted to minimize reliance on fossil fuels. PR Newswire+2Northstar HVAC/R+2

In some jurisdictions, this trend dovetailed with incentives and regulatory pressure — a combination likely to accelerate adoption in the next few years.

17. Awareness of Indoor Air Quality (IAQ) & Fresh-Air Ventilation — Zoning Controllers Adapt

With increased focus on occupant health and building resilience post-pandemic, IAQ became more than just a “nice-to-have” topic. In 2025, many new HVAC products and controls emphasized built-in fresh-air intake, economizer modes, humidity control, and ventilation compliance with standards such as ASHRAE 62.2. EcoJay SmartZone SPEC

Zone control panels like Ecojay’s new SmartZone 3.0 / 4X 3.0 integrate fresh-air and economizer capabilities — making IAQ-focused ventilation part of the standard zoning package. Ecojay+2

For schools, multifamily residential, and commercial buildings, this shift underscored that HVAC isn’t just about comfort — it’s increasingly seen as a core element of occupant health, safety, and resilience.

18. Demand Surge & Backlogs — HVAC Supply Chain Under Pressure

Between refrigerant shortages, increased demand for heat pumps, and widespread retrofits, many HVAC contractors and distributors in 2025 found themselves with long lead times, backlogged installs, and stretched supply chains. Several reports pointed to delays in components, refrigerant cylinder shortages, and pressure on inventory of compliant equipment. ACIQ+2HVAC Informed+2

This environment drove up installation costs and wait times for homeowners — but also created opportunity for well-prepared contractors who secured materials early, invested in training, and offered bundled retrofit/zoning/upgrade services.

19. Growing Momentum for Building Electrification & Decarbonization — Regulatory & Market Forces Align

2025 felt like a turning point for building electrification. Regulatory pressure, incentives, public concern about emissions, and rising gas prices pushed more property owners to consider electrified HVAC, heat-pump water heaters, geothermal, solar-assist, and other low-carbon solutions. PR Newswire+2Merlin Monitor+2

As a result, HVAC design conversations began to shift. Rather than specifying “gas furnace plus A/C,” many architects, MEP engineers, and contractors started designing buildings from the ground up for electric heat — often with zoning, smart control, and renewable integration in mind.

20. Zoning & Damper-Based HVAC Control Comes Into Its Own — SmartZone 3.0 Leading the Way

One of the most notable developments in 2025 was the renewed focus on zoning and airflow control — especially for residential and light-commercial buildings. At the center of this movement was Ecojay’s release of SmartZone 3.0 (both 3-zone and 4-zone / multi-zone versions). Their new controllers — the SmartZone-3X 3.0 and SmartZone-4X 3.0 — combine universal compatibility (gas, electric, heat pump, etc.), support for up to 20 zones (expandable), built-in fresh-air and economizer controls, dehumidification modes, multi-stage staging controls, and a modern LED/status interface. EcoJay

For many homeowners, this meant zoning was no longer a niche luxury — it became an affordable, retrofit-friendly way to improve comfort, reduce energy waste, and manage airflow intelligently. According to distributors, SmartZone 4X 3.0 emerged as the “best overall” option for larger homes or light-commercial setups, while SmartZone 3X 3.0 offered strong value for mid-sized projects. ZoningSupply.com - Zone Control

For contractors, the simplicity of installation — screwless terminals, dip-switch configuration, built-in supply-air sensor, and LED diagnostic feedback — helped reduce install time and complexity, making zoning a more attractive upsell or retrofit option. ecojay.com

Overall, 2025 may have marked the moment when zoning and damper-based control finally became “mainstream” in HVAC — not just for luxury homes, but for ordinary homes and small commercial buildings too.

Looking Back — What 2025 Means for the Future of HVAC

2025 was a watershed year. The combination of environmental regulation (phasing out high-GWP refrigerants), rising energy / carbon awareness, technological advances (heat pumps, smart controls, AI, zoning), and shifting market dynamics (retrofitting, supply strain, demand surge) forced the HVAC industry — contractors, manufacturers, building owners — to adapt quickly.

What stands out is that many of these changes point to a longer-term transformation: from HVAC as a commodity “cooling/heating box,” to HVAC as an integrated, efficient, adaptive, and even healthy system — delivering comfort, air quality, energy efficiency, and environmental responsibility.

The rise of smart zoning (e.g., Ecojay SmartZone 3.0), air-to-water heat pumps, thermal storage, AI-driven controls, and electrified systems suggest that “HVAC 2025” is really “HVAC 2035.”

If you’re a homeowner, building manager, or HVAC professional — 2025 was more than a transition year. It was the start of a new era.

Merry Christmas and Happy New Year!

As we wrap up 2025, all of us at ZoningSupply.com want to extend our warmest wishes for a Merry Christmas, Happy Holidays, and a joyful New Year!

This year brought its fair share of challenges—between shifting regulations, rising tariffs, and the constant evolution of the HVAC industry, 2025 kept us on our toes. But thanks to your support, we not only navigated the obstacles… we thrived.

One of our biggest highlights was the incredibly successful release of our newest product line. The response from contractors, distributors, and homeowners has been overwhelming, and we’re grateful for the trust you place in us year after year.

And we’re just getting started.

🔧 Looking Ahead to 2026

We have even more innovations on the way—new features, smarter integrations, and expanded product offerings designed to make zoning simpler, more efficient, and more profitable for our partners. If 2025 was a year of overcoming, 2026 will be a year of accelerating.

Thank you again for being part of our journey. We couldn’t do any of this without our incredible customers and industry partners.

Wishing you and your families peace, warmth, and prosperity this holiday season—and an exciting, successful 2026 ahead!

— The ZoningSupply.com Team

How to Wire an Ecojay SmartZone Controller to a MrCool HyperHeat Ducted Heat Pump with 2-Stage Auxiliary Heat

Although this article is about a specific application, the wiring diagrams below can be used for any Heat Pump system with 2 stages of AUX (Auxiliary / Emergency) Heat.

When you’re installing a zoning system on a heat pump, wiring can feel a little more complex than with a standard furnace and air conditioner. That’s especially true with modern high-efficiency systems like the MrCool HyperHeat Ducted Heat Pump, which uses advanced inverter technology for precise heating and cooling, and includes two stages of electric auxiliary heat for colder weather backup. The good news is that with the right controller—such as the SmartZone 3.0—everything can be wired cleanly and reliably, giving homeowners the comfort of true zoned control without losing the performance features of their equipment.

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The diagram below will show how to connect a SmartZone controller to a HyperHeat ducted system with auxiliary heat. Whether you’re a professional HVAC installer or a DIYer who’s confident working with low-voltage controls, this article will help you understand the wiring layout, terminal functions, and key considerations for making the system operate correctly.

PARTS NEEDED:

• SmartZone Controller

• 24VAC Delay-on-make relay (like the ICM102 or Supco TD69 or Mars 32391)

View fullsize

A delay-on-make relay is a simple timing device that waits a set amount of time after receiving power before it closes its contacts and energizes the connected load. In other words, when the thermostat or zone controller calls for heat, the relay doesn’t switch on immediately—it holds off for a few seconds (or minutes, depending on the setting) before passing power through.

In a heat pump system with two stages of electric auxiliary heat strips, a delay-on-make relay can be wired to control the second stage. The first stage energizes right away when auxiliary heat is needed, providing an initial boost. Then, if the call for heat continues, the delay-on-make relay activates after the preset time and brings on the second stage.

This approach helps prevent all the heating strips from coming on at once, which can cause large electrical surges and unnecessary wear on components. Instead, the stages are sequenced smoothly, delivering strong heating capacity when it’s truly needed while reducing stress on the system and the electrical supply.

NOTES:

• SmartZone manages single stage AUX without any additional wiring.

• W2 on SmartZone does not connect to W2 on Mr. Cool

• There are many variations of the time delay relay but the one we have linked below we have tested. However, any “delay-on-make” relay will work that is capable of enough current to energize the Mr. Cool input.

• The “W2” or AUX Heat 2nd Stage input must draw at least 0.04 A (40mA) to engage the relay style suggested here. If it doesn’t then an additional relay may be needed to make this work correctly. See diagram below.

One of the major benefits of pairing SmartZone with a ducted Mr. Cool system is that you’re not limited by the “one-size-fits-all” thermostat controls that come with most equipment. Instead, you get precise control over which zones call for heating or cooling, when the heat pump should stay on versus when backup heat should be engaged, and how to stage auxiliary heat efficiently.

The below wiring application can be used if the above does not work with the equipment brand/model you are using. It incorporates the time delay relay with a know working relay that is offered by zoningsupply.com to act as a load for the 40mA minimum that the ICM relay requires to activate.

View fullsize

SmartZone-3X 3.0

$189.99

Sale

SmartZone-4X 3.0

Sale Price: $269.99 Original Price: $299.00

24V Relay - DPDT

$14.99

WHAT TIME DELAY BETWEEN AUX STAGES?

Setting the delay-on-make timer to about 10 minutes strikes the right balance between comfort and efficiency. Electric heat strips draw a very high current load (often 40–60 amps per stage), so bringing them all on at once can create large inrush demands on the electrical service. By holding off the second stage, the system reduces unnecessary peaks in power consumption.

In many cases, the heat pump plus the first stage of auxiliary heat can satisfy the thermostat within that 10-minute window. This avoids running the second stage altogether, saving energy and lowering operating costs. But if the heating demand continues past 10 minutes—such as during extreme outdoor temperatures or when several zones are calling—the delay ensures that the second stage is available to maintain comfort without excessive lag.

In short, the 10-minute setting ensures the system uses the least amount of auxiliary heat necessary, prevents electrical overloads, and still provides strong backup capacity when it’s truly needed.

ACCA News Briefs - ZoningSupply.com first feature

ZoningSupply.com is absolutely thrilled and honored to be featured in the latest ACCA (Air Conditioning Contractors of America) newsletter. The inclusion in ACCA’s June 6, 2025, edition is a significant recognition from one of the most esteemed organizations in the HVAC industry—an endorsement we don’t take lightly.

Why this matters so much to us

Being highlighted in ACCA's newsletter places ZoningSupply.com directly in front of professional HVAC contractors, engineers, and industry decision-makers. These are the people who depend daily on high-performance zoning systems and quality components to deliver market-leading comfort, efficiency, and precision to their customers. It's an invaluable endorsement that resonates on two fronts:

1. Industry validation. ACCA represents the gold standard for HVAC professionals. Their newsletter is a trusted source—so being featured underscores the reliability and merit of our products and services.

2. Broader reach. The ACCA newsletter goes out to a vast network of active contractors and technical professionals. This means our message makes its way into inboxes of contractors who might not yet know us—but absolutely need us.

What ZoningSupply.com brings to the table

At ZoningSupply.com, we specialize in top-tier zoning controls, dampers, thermostats, and accessories. Our passion and expertise lie in delivering:

• Precision control technologies: Enabling contractors to tailor environmental comfort on a room-by-room basis, effectively addressing load diversity and delivering from demand-driven comfort systems.

• Energy optimization: Helping homeowners and building managers reduce energy usage and increase HVAC system longevity through zoned control strategies.

• Contractor-centric support: We know how important it is for contractors to have dependable service, fast shipping, and easy returns—and we make that a priority.

Being featured in ACCA’s newsletter gives us a powerful opportunity to reinforce these messages. We see it as a chance to say, “Yes—you can trust us with your most demanding jobs. We’ve demonstrated our commitment to excellence and leading-edge solutions.”

How we’ll leverage this spotlight

Our ACCA feature isn’t just an accolade—it’s a platform. Here's what comes next:

• Deepened partnerships: We will connect with ACCA member contractors to share case studies, installation tips, and training resources.

• Enhanced educational outreach: We'll create webinars and white papers that dive into zoning best practices.

• Continued innovation: As ACCA elevates industry standards (through Manual J®, Manual D®, zoning specifications, etc.), we’ll stay at the cutting edge—introducing new thermostats, actuators, and communications modules aligned with ACCA methodologies.

A heartfelt thank-you

To ACCA: thank you for spotlighting us. Recognitions like this fuel our mission to empower HVAC professionals with smarter, more precise control solutions. And to ACCA members: we’re eager to deepen our collaboration, support your next zoning or retrofit project, and help drive industry-wide excellence.

Here at ZoningSupply.com, we’re motivated more than ever—thank you for featuring us, and for being a pivotal part of our ongoing journey toward precision comfort and energy-efficient HVAC innovation.

HVAC Industry Insights – Q2 2025 Edition

1. Carrier Global Surpasses Q1 Expectations Amid Rising HVAC Demand

Carrier Global reported a robust first quarter in 2025, with adjusted earnings of $0.65 per share, exceeding analysts' expectations. The company attributes this success to increased demand for HVAC systems, driven by climate change concerns and stricter building regulations. Carrier has also raised its full-year earnings forecast, reflecting confidence in sustained growth. LINK

Further Reading:

• Reuters: Carrier Global beats quarterly profit estimate, raises 2025 forecast

• Investors.com: Comfort Systems Earnings: Analysts Expect 20% Premium To FIX Stock

2. EPA's 2025 Refrigerant Regulations Impact HVAC Costs

Starting January 1, 2025, the EPA mandates the use of low Global Warming Potential (GWP) refrigerants like R-32 and R-454B in new HVAC systems. This transition aims to reduce environmental impact but is expected to increase equipment costs by 25% due to new technologies and compliance requirements.

Further Reading:

• AirTekk Comfort Solutions: The HVAC Industry in 2025

• FOX 2 Detroit: 2025 brings big changes to air conditioning units

3. Comfort Systems USA Achieves Record Q1 Performance

Comfort Systems USA reported a 77% increase in adjusted earnings for Q1 2025, marking its most profitable quarter to date. The company's revenue rose by 18%, and its project backlog expanded significantly, indicating strong future performance despite economic uncertainties. Investor's Business Daily

Further Reading:

• Investors.com: Comfort Systems Earnings: Analysts Expect 20% Premium To FIX Stock

• Reuters: Carrier Global beats quarterly profit estimate, raises 2025 forecast

4. HVAC Zoning Systems Enhance Energy Efficiency and Comfort

HVAC zoning allows for individualized temperature control across different areas of a building, leading to increased energy efficiency and personalized comfort. By directing heating and cooling only where needed, zoning systems reduce energy waste and extend HVAC system lifespan. For more information on zoning solutions, visit Ecojay.Modern Comfort and Air

Further Reading:

• Modern Comfort Air: Top HVAC Trends to Watch for in 2025

• Aztil AC: Emerging HVAC Trends for 2025

5. Hybrid VRF Systems Revolutionize Commercial HVAC

Hybrid Variable Refrigerant Flow (VRF) systems are gaining popularity in commercial HVAC applications due to their energy efficiency and flexibility. These systems use water in conjunction with refrigerant to manage building zones, making them ideal for diverse environments like schools, hotels, and office buildings.HVAC Informed

Further Reading:

• HVAC Informed: Revolutionizing Commercial HVAC With Hybrid VRF

• Mar-Hy Distributors: 2025 HVAC Tech Trends

Announcing a NEW Version for 2025 - SmartZone 3.0

Introducing SmartZone 3.0 – the next evolution in intelligent HVAC zoning from Ecojay! Designed as a powerful upgrade to our trusted zone controller, SmartZone 3.0 offers enhanced performance, greater flexibility, and cutting-edge technology to optimize comfort and efficiency in any home or building. With improved compatibility, smarter automation, and a user-friendly interface, managing your HVAC system has never been easier. Upgrade to SmartZone 3.0 and experience the future of climate control today!

Click the button below to order your SmartZone-4X 3.0 - These are shipping immediately!

We also want to take a moment to express our deepest gratitude to our loyal customers for over 20 years of support. Your trust and feedback have been instrumental in shaping our innovations, and we are honored to continue providing you with reliable and advanced HVAC solutions. Thank you for being part of the Ecojay family!

If you have recently (in the last 12 months) installed a SmartZone-4X 2.0 and would like to upgrade to version 3.0, we are going to offer a $100 OFF coupon for a limited time just for our customers on ZoningSupply.com Click the button below & fill out the form to receive your coupon code.

AHR Expo 2025: Innovation, Insights, and Industry Connections in Orlando

Last week, we had the incredible opportunity to attend the AHR Expo 2025 in Orlando, Florida—one of the HVACR industry’s most significant annual gatherings. This event brought together manufacturers, engineers, contractors, distributors, and industry leaders from around the world to showcase the latest innovations, discuss key industry trends, and forge valuable business connections.

Held at the Orange County Convention Center, the expo was a sprawling hub of cutting-edge technology, networking opportunities, and insightful education sessions. From the moment we stepped onto the showroom floor, it was clear that this year’s event was set to be one of the most dynamic yet. The energy was electric, with thousands of attendees exploring booths from more than 1,600 exhibitors, each showcasing groundbreaking products and solutions aimed at driving the HVACR industry forward.

One of the key highlights was seeing firsthand how the industry is embracing sustainability and energy efficiency. With increasing demand for environmentally friendly solutions, many exhibitors unveiled high-efficiency HVAC systems, advanced building automation technologies, and new refrigerants designed to meet evolving regulations. Smart building solutions were a major theme, with numerous companies demonstrating how IoT and AI-driven systems are enhancing climate control, optimizing energy usage, and improving system diagnostics.

Our team took full advantage of the opportunity to connect with both new and existing partners. The expo provided an ideal setting to strengthen relationships with suppliers, discover new technologies, and gain insights into emerging trends that will shape the industry in the coming years. We were particularly impressed with innovations in smart zoning solutions, advancements in heat pump technology, and improvements in indoor air quality (IAQ) management—all of which are critical to the future of HVACR.

Beyond the exhibitor floor, the AHR Expo also featured a robust lineup of educational sessions, keynote speakers, and industry panels. We attended several thought-provoking discussions on topics ranging from decarbonization efforts to the future of smart HVAC systems. The conversations around workforce development and the role of technology in addressing labor shortages were particularly insightful, reinforcing the need for continued investment in training and upskilling.

Of course, an event like this isn’t just about business—it’s also about community. Whether it was reconnecting with long-time colleagues, engaging in lively discussions at networking events, or simply sharing a coffee with fellow industry professionals, the AHR Expo reminded us of the passion and innovation that drive this industry forward.

As we wrap up our time in Orlando and reflect on everything we experienced, one thing is clear: the future of HVACR is bright. The technologies we saw, the discussions we participated in, and the connections we made will all play a crucial role in shaping our strategy for the coming year. We left the expo feeling inspired, informed, and excited for what’s ahead.

SmartZone can replace almost any Zone Controller

This is a chart for cross-referencing other brand (not Ecojay) zone panel part numbers for replacement with one of the SmartZone product line.

Manufacturer Part # Zones Stages (H - C)

Honeywell HZ432 4 SmartZone-4X ZS4X 3 - 2

Honeywell HZ322 3 SmartZone-4X ZS4X 2 - 2

Honeywell HZ311 2 SmartZone-2X ZS2X or SZ2L 1 - 1

Honeywell HZ221 2 SmartZone-2X ZS2X or SZ2L 1 - 2

EWC UZC4 4 SmartZone-4X ZS4X 3 - 2

EWC BMPlus3000 3 SmartZone-4X ZS4X 2 - 2

EWC BMPlus5000 5 SmartZone-4X ZS4X 2 - 2

EWC BMPlus7000 7 SmartZone-4X ZS4X 2 - 2

EWC NCM300 3 SmartZone-4X ZS4X 2 - 1

EWC ST-2E 2 SmartZone-2X ZS2X or SZ2L 1 - 1

EWC ST-3E 3 SmartZone-4X ZS4X 1 - 1

ZoneFirst H32/P 2 SmartZone-2X ZS2X or SZ2L

ZoneFirst MDZ3 3 SmartZone-4X ZS4X

ZoneFirst MMZ3 3 SmartZone-4X ZS4X

ZoneFirst MZS4 4 SmartZone-4X ZS4X

JacksonSystems Z-200-HC 2 SmartZone-2X ZS2X SZ2L 1 - 1

JacksonSystems Z-200-HC-MS 2 SmartZone-2X ZS2X SZ2L 1 - 1

JacksonSystems Z-200-HP 2 SmartZone-2X ZS2X SZ2L 1 - 2

JacksonSystems Z-2000 20 SmartZone-4X ZS4X

JacksonSystems Z-300-HC-MS 3 SmartZone-4X ZS4X

JacksonSystems Z-300-HPS 3 SmartZone-4X ZS4X

JacksonSystems Z-600 6 SmartZone-4X ZS4X

JacksonSystems WCZ-600 6+ SmartZone-4X ZS4X

Braeburn 140202 2 SmartZone-2X ZS2X SZ2L

Braeburn 140303 3 SmartZone-4X ZS4X

Braeburn 140404 4+ SmartZone-4X ZS4X

DuraZone RED4 SmartZone-4X ZS4X

DuraZone SMZ 2,3,4 SmartZone-4X ZS4X

DuraZone JTZ SmartZone-4X ZS4X

AprilAire 6202 2 SmartZone-2X ZS2X or SZ2L 1 - 1

AprilAire 6203 3 SmartZone-4X ZS4X 1 - 1

AprilAire 6303 3 SmartZone-4X ZS4X 2 - 1

AprilAire 6404 4 SmartZone-4X ZS4X 3 - 2

AprilAire 6402 2 SmartZone-2X ZS2X or SZ2L 0

AprilAire 6504 4 SmartZone-4X ZS4X 3 - 2

Arzel HeatPumPro SmartZone-4X ZS4X

Arzel AirBoss 8 SmartZone-4X ZS4X 3 - 2

Arzel MPS Series 2,3 SmartZone-2X ZS2X SZ2L 1 - 1

Arzel GTPro SmartZone-4X ZS4X 3 - 2

Arzel AloneZone 1 SmartZone-2X ZS2X SZ2L 0 - 0

Zonex Digitrack 3 3 SmartZone-4X ZS4X 2 - 1

Zonex Digitrack 4 4 SmartZone-4X ZS4X 2 - 2

Zonex GEN II-R 10 SmartZone-4X ZS4X 2 - 2

Zonex GEN III 20 SmartZone-4X ZS4X

Bryant Zone Perfect ZONEBB4KIT 4 SmartZone-4X ZS4X 2 - 2

PLUS MANY MANY MORE! Contact us with questions about compatibility.

If you have any experience with part numbers that are not listed on this sheet, please comment and I will add them.

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Select TEMP SENSOR WITH - $109.99 WITHOUT - $99.99

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Sale Price: $165.99 Original Price: $199.00

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SmartZone-4X

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Is Zone Control really for everyone?

Why Your Residential and Light Commercial Forced-Air Systems Need a Zone Control System

In today's world, energy efficiency and personalized comfort are top priorities for homeowners and business owners alike. One technology that can significantly improve both is a zone control system for your forced-air heating and cooling systems. At ZoningSupply.com, we believe that implementing a zone control system, such as the SmartZone from Ecojay, can transform how you experience comfort in your home or business. Here’s why.

Understanding Zone Control Systems

A zone control system divides your home or business into different zones, each of which can be heated or cooled independently. This is achieved through the use of dampers installed in the ductwork and controlled by a central system that responds to separate thermostats placed in each zone. This allows for precise temperature control in different areas, leading to numerous benefits.

Benefits of Zone Control Systems

1. Enhanced Comfort

With a zone control system, you can maintain different temperatures in different areas of your home or business. For example, you might prefer a cooler bedroom at night but a warmer living room during the day. Zoning allows you to set the perfect temperature for each zone, ensuring optimal comfort for everyone.

2. Energy Efficiency and Cost Savings

Heating or cooling your entire home or business uniformly can lead to wasted energy and higher utility bills. Zone control systems reduce energy consumption by only conditioning the areas that need it, rather than the entire building. This targeted approach can lead to significant cost savings over time.

3. Extended HVAC System Lifespan

By reducing the workload on your HVAC system, zone control can help extend its lifespan. Since the system isn’t working as hard to maintain a uniform temperature throughout the entire building, there’s less wear and tear on the equipment. This can result in fewer repairs and a longer life for your system.

4. Improved Indoor Air Quality

Zone control systems can improve indoor air quality by ensuring that the HVAC system is not overworking and potentially spreading dust, allergens, and other pollutants throughout the entire building. By focusing on specific zones, it’s easier to manage and maintain cleaner air.

5. Customization and Control

Modern zone control systems, like Ecojay's SmartZone, offer advanced customization and control options. You can easily set schedules, make adjustments remotely, and monitor system performance, all of which contribute to a more efficient and user-friendly experience.

Why Choose Ecojay's SmartZone?

Ecojay's SmartZone system stands out in the market for several reasons:

1. Advanced Technology

SmartZone utilizes advanced technology to ensure precise control and efficient operation. Its intelligent algorithms and user-friendly interface make it easy to customize settings for optimal performance.

2. Easy Integration

The SmartZone system is designed to integrate seamlessly with most residential and light commercial forced-air systems. Whether you’re retrofitting an existing system or installing a new one, SmartZone provides a straightforward and efficient solution.

3. Reliable Performance

Ecojay is known for its reliable and durable products. The SmartZone system is built to withstand the demands of regular use, ensuring consistent and dependable performance over time. All parts come with 5 year warranty.

4. Remote Access and Control

WiFi Thermosat -ST300

$99.99

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With SmartZone connected to WiFi thermostats such as NEST, ECOBEE, VINE, etc, you can control your system from anywhere using a smartphone or tablet. This remote access capability allows you to make adjustments on the go, ensuring your comfort and efficiency needs are always met.

5. Energy Management Features

SmartZone includes features designed to optimize energy use, such as programmable limits and economizer capability. Additionally, using the Wifi Thermostats’ logging capabilities, can help you understand and manage your energy use more effectively.

Conclusion

Investing in a zone control system like Ecojay’s SmartZone is a smart move for anyone looking to enhance comfort, increase energy efficiency, and save on utility costs. At ZoningSupply.com, we’re committed to providing the best solutions for your heating and cooling needs. By implementing a zone control system, you can enjoy the benefits of personalized comfort, reduced energy consumption, and a longer-lasting HVAC system.

Revolutionize your home or business’s heating and cooling efficiency with SmartZone today!

If you have questions or comments, let us know!

MEP Drawings & Specs for Generic HVAC Zone Control System

Typical wording for HVAC Mechanical drawings to include SmartZone Zone control (2 to 8 zones):

“ECOJAY SMARTZONE ZS2X (2 ZONES) OR ZS4X (UP TO 4 TO 8 ZONES)

1. SMARTZONE CONTROLLER SHALL INCLUDE FLASH BASED MICROPROCESSOR FOR AUTOMATIC CONTROL OF UP TO 2 ZONES (ZS2X), 4 ZONES (ZS4X) OR 8 ZONES (TWO-ZS4X CONTROLLERS) ON A SINGLE HVAC SYSTEM.

2. SMARTZONE CONTROLLER SHALL INCLUDE LED DISPLAY WITH FULL TEXT STATUS
MONITORING AND DIAGNOSIS OF THE ENTIRE SYSTEM STATUS AND SUPPLY TEMPERATURE.

3. SMARTZONE CONTROLLER SHALL CONTAIN ELECTRONIC LIMIT CONTROL (ELC) SUPPLY AIR SENSOR WHICH ALLOWS CONSTANT MONITORING OF THE LEAVING (SUPPLY) AIR TEMPERATURE

5. PUSH BUTTONS SHALL ALLOW FOR DIGITAL ADJUSTMENT OF HIGH AND LOW LIMIT

4. IN THE EVENT OF SUPPLY AIR SENSOR OR SENSOR WIRING FAILURE, THE CONTROLLER SHALL CONTINUE OPERATING THE HVAC SYSTEM AS A SINGLE ZONE SYSTEM WITHOUT INTERRUPTION

6. ON HEAT PUMPS SYSTEMS, EMERGENCY HEAT MUST BE INITIATED FROM THERMOSTAT #1, NOT A SWITCH ON THE ZONE CONTROL BOARD.

7. EACH ZONE CONTROLLER THERMOSTAT TERMINAL AND EQUIPMENT TERMINAL SHALL HAVE A COLOR-CODED LED ALLOWING FOR EASY MONITORING OF THERMOSTATS AND SYSTEM CALLS.

8. ROUND ZONE DAMPER MOTORS SHALL BE 2-POSITION (OPEN/CLOSE) DESIGN WITH A SOFT-EDGE BLADE DAMPER SIZE AS ROUND DUCT IN WHICH BLADE GASKET AND SHALL BE POWERED BY 24VAC POWER OPEN / POWER CLOSE MOTOR DEVELOPING MINIMUM 10 IN-LB. OF TORQUE AT MAX 4 VA

9. RECTANGULAR ZONE DAMPER MOTORS SHALL BE 2-POSITION (OPEN/CLOSE) DESIGN WITH EXTRUDED ALUMINUM FRAME & LOUVERS & METAL SHAFT LINKAGES AND SHALL BE POWERED BY 24VAC POWER OPEN / POWER CLOSE MOTOR DEVELOPING MINIMUM 10 IN-LB. OF TORQUE AT MAX 4 VA

10. ALL ZONE DAMPERS SHALL INCLUDE ACCURATE, NON-ADJUSTABLE & ADJUSTABLE, BLADE POSITION INDICATOR AND ADJUSTABLE MINIMUM STOP CAPABILITY (MIN OPEN & MIN CLOSE).

11. AUTOMATIC, ELECTRONIC BYPASS DAMPER WITH STATIC PRESSURE CONTROL IS REQUIRED WITH 24V ELECTRIC ACTUATORS UNLESS NOTED OTHERWISE.

12. ZONE CONTROLLER, DAMPER MOTORS AND THERMOSTATS SHALL BE POWERED WITH A SEPARATE 24V FUSED TRANSFORMER (TYPICALLY 40VA) PROVIDED BY HVAC CONTRACTOR.

13. CONTACT ECOJAY.COM or 1-888-523-ECOJAY FOR MORE INFORMATION OR TRAINING
”

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SmartZone is great opportunity for DISTRIBUTORS.

There are many reasons that distributors should take a look at stocking SmartZone, but basically because they can make more money & have a higher customer satisfaction with a very low up-front investment.

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1. Only 2 models needed to cover all applications.
   A lot of manufacturers require stocking 5,6... even dozens of different products to get the best price.  With SmartZone, you only need the SmartZone-2 and the SmartZone-4X.  That's right, only 2 models will cover everything from 2 zones to 20 zones, single & multi-stage, gas/electric & heat pump (including dual fuel).  As a bonus, the SmartZone-4X has built-in Fresh-Air control.
    
2. Best wholesale pricing.
   Options for small and large volume distributors with 30 day NET terms pending credit approval.  Start with a small order or only 10 zone controllers.  Contact ECOJAY (www.smartzoning.com) for details.
    
3. Documentation & training.
   Ecojay is committed to supporting distributors with documentation, signs, marketing materials, phone & online support.  Ecojay will even do an in-person training for contractors at new distributor locations (minimum order required for free training - normal price for training $500)
    
4. Increase zone control profits & sales.
   SmartZone has allowed many of our distributors to increase sales of zoning because it is so much easier for contractors to use & install... they buy more.  Distributors of SmartZone also have increased margins on the higher-end controllers because SmartZone-4X can do everything the Honeywell HZ432 can do at a much lower price.
    
5. Contractors will love you for it.
   Even contractors that "don't do zoning" occasionally come across a system that needs it or a customer that wants it.  SmartZone is the best the the occasional zoning contractor or the contractor that does it every day.  Most contractors that try it, don't want to use anything else.

Right now, only about 25-35% of the US has physical distribution of ECOJAY products, specifically SmartZone.  This is a HUGE missed opportunity.  Online distribution reaches nationwide, but even this is in it's infancy.  SmartZone deserves to be on the shelf of your local distributor and contractors deserve to have access to it.  Right now it is available on Amazon.com, Ebay, ZoningSupply.com for contractors in the US & Canada to have in a couple of days shipping time.

It would be great if some of the large online supply houses like ... Supplyhouse.com or AlpineAir.com would stock SmartZone so it could be purchased and shipped along with systems.  Or some of the national-chain distributors like Johnstone would also carry SmartZone for the sake of availability and exposure to SmartZone style zoning.

SmartZone is not a new gimmic in zoning, it is simply the BEST traditional forced-air zone control board that is available.  SmartZone has been designed with the HVAC contractor in mind and it shows with the feedback that is received over and over again from contractors.  SmartZone has been shipping since 2004 and has had rave reviews from the beginning. 

Contractors that never liked zoning before even love SmartZone.  Many of the problems that people had 10 or 15 years ago with zoning such as freezing coils or short cycling have been solved by more sophisticated zone controls but SmartZone made it simple.  Using Ecojay SmartZone makes zoning simple.

HVAC Contractors: Out-Perform the Competition with ZoningSupply.com

Contractors nowadays are finding that homeowners and business-owners are looking for all the bells and whistles they can reasonably afford and install. Among features like energy-efficient fixtures and home-automation, HVAC zoning is usually near the top of this list. Of course, zoning offers multiple benefits to homes and buildings as it can save energy and provide a custom level of comfort.

As HVAC zoning rises in popularity, homeowners and business-owners are beginning to ask for it by name.

How can contractors make the most of this movement?
It starts with choices. Many contractors have unfortunately limited themselves to zone control systems that sit at the top of the market (as well as the top of the price-range.) This would be great if these “name-brand” zoning systems offered quality, reliability and features that justified the price. This is simply not the case. Contractors who have worked with zoning for a while can attest to this. The good news is that there are now many choices when it comes to zone controls, dampers, and equipment. Contractors and suppliers can now sift through the choices and figure out which systems are the simplest to install, the most reliable, and provide the best customer support.

This is where ZoningSupply.com comes in. ZoningSupply guarantees their products to be the most reliable, the easiest to install, and the most affordable in the marketplace. Hundreds of contractor and homeowner testimonials over the past 10+ years sing praises of the top-notch products they offer.
Here’s why . . .

Contractor-Friendly
The engineers behind ZoningSupply products will tell you that their systems were designed with the contractor in mind. In other words, full-color install guides, screwless wiring, and color-coded LEDs are only the start. If a contractor picks up the phone and talks to Jeff or one of our other tech-support specialists, they’ll be sure to have all of their questions answered quickly but thoroughly.  

Easy-to-follow instructions and simple design make for a lightning-fast install.  

Ship Direct for Free
Furthermore, ZoningSupply.com can ship anywhere in the U.S. for free. Individual components or entire systems can be purchased on the website and delivered straight to your office or job site,  

Affordable
ZoningSupply’s featured SmartZone 2x, 4x, and 2L systems are among the most affordable in the marketplace. This puts money in your pocket and provides savings that can be passed along to homeowners.

Universally Compatible
If a contractor uses ZoningSupply, they can confidently offer retrofit options for virtually any existing HVAC system on the market. This means not having to learn and re-learn various installation procedures. This also means that nearly every home or building in your area can be retrofitted for zoning . . . Think of the opportunities!

With zone control systems, as with any product, there are the good, the bad, and the ugly. In the end, they all must answer to the contractors and ultimately the homeowners. When bidding on projects or marketing their services, contractors should equip themselves with the confidence and reliability that ZoningSupply.com products provide.