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12 Months of SmartZone 3.0: A Breakout Year for HVAC Zoning

HVAC Industry, HVAC Contractors, homeownerszoning supplyComment

One year ago, the HVAC world welcomed Ecojay SmartZone‑3.0 as the next evolution of intelligent climate zoning — promising enhanced performance, broader compatibility, and a smarter user experience.

Today, after a full year in the field, installers, builders, and homeowners are reporting results that go well beyond expectations.


🎯 Unmatched Reliability — 10× Better in Real Installations

From the very beginning, reliability was a core focus for SmartZone 3.0 — and the first real-world data has delivered an extraordinary story.

Installers across residential and light commercial projects are reporting early field reliability metrics that are an order of magnitude better than the already trusted SmartZone 2.0 platform, which itself was recognized for rugged performance and dependable operation over many years. This jump in real-world robustness means:

  • Fewer service callbacks

  • Dramatically reduced early-life failures

  • Greater peace of mind for contractors and end users

Collectively, these outcomes have solidified SmartZone 3.0’s reputation not just as an upgrade — but as a stability milestone in zoning systems.


💡 Customer Reception Has Been Amazing

One of the strongest themes we’ve heard over the past 12 months is how well SmartZone 3.0 has been received by the people who use it every day.

Contractors and HVAC professionals consistently share feedback like:

  • “Finally — a zoning controller that just makes sense right out of the box.”

  • “Setup and wiring are some of the most intuitive I’ve worked with.”

  • “My team’s installation time has decreased noticeably.”

Homeowners, too, are noticing the difference: smoother comfort control across multiple spaces, clearer feedback from their systems, and fewer service calls. For a product category that often hides in basements and closets, that’s a huge win for user experience.

📊 The Most Intuitive Display Yet

One standout feature contributing to SmartZone 3.0’s success has been its clear and user-friendly display, which installers have repeatedly highlighted as a game-changer.

Compared to prior versions:

  • Text and status indicators are easier to read at a glance

  • Menu labels are clearer and more intuitive

  • Diagnostics and system feedback help reduce troubleshooting time

These improvements empower technicians to diagnose and verify systems without guesswork — and help homeowners better understand system behavior when they glance at the panel.


⚙️ Simple to Install — Built for Fast, Accurate Setup

A year of hands-on use has proven that the redesigned SmartZone 3.0 isn’t just reliable — it’s efficient to work with. Installers particularly appreciate:

  • Intuitive terminal layout

  • Clear wire ID and labeling

  • Fast dip-switch and push-button configuration

  • Diagnostics that reduce common setup errors

Multiple crews have reported meaningful time savings per install — which means lower labor costs and happier customers.

🔁 Universal Compatibility Continues to Impress

SmartZone 3.0 supports virtually all HVAC equipment types — from gas and electric to heat pumps and dual-fuel systems — in one unified platform.

This truly universal compatibility has helped streamline inventory and reduce headaches that come from mismatched components or controllers that only work in limited scenarios.

📈 Industry Trends: Zoning Is Growing — And So Is SmartZone

The broader HVAC industry has seen increasing demand for zoning solutions — driven by higher energy costs, greater focus on comfort control, and expanding smart thermostat adoption.

Within this landscape, SmartZone 3.0 stands out not only for its technical merits but also for how well it fits into contemporary HVAC and smart home workflows.

🔮 Looking Ahead: Year Two and Beyond

With a year of solid performance and glowing feedback in the books, SmartZone 3.0 is poised for continued growth. Manufacturers and installers alike are taking note — and end users are reaping the comfort, reliability, and simplicity that modern zoning control should deliver.

Here’s to another year of smarter comfort and dependable performance!

2016 : QUESTIONS & ANSWERS about SmartZone - D

Supportzoning supply1 Comment
Photo by perrygerenday/iStock / Getty Images

Do the wires from the condenser-outside and the system board on the air handler connect to the terminal labeled Equipment on your install sheet ? 

Assuming you are installing zoning for the first time, the wires connecting to the equipment connector on SmartZone are the same wires that connected to the single thermostat you used to control your equipment before installing SmartZone.  The terminal labels from your thermostat should be the same or similar to those on the equipment terminal.  If you see only a Y and W terminal on the thermostat then the wires from those thermostat terminals will go to Y1 and W1 respectively on the SmartZone equipment terminal.  Your hvac equipment controls will be powered by a 24VAC transformer that should be connected to the C and Rh (or you can use the Rc instead of Rh terminal because the two are jumpered together) on the SmartZone equipment connector.  Typically the wires connecting to the SmartZone equipment terminal will come from your hvac equipment control board located in the blower cabinet.  In some installations, the Y wire is typically yellow colored  (or Y1 and Y2 if you have a multispeed system) may come from the outdoor condensing unit.   If you have a heat pump you should also have a wire (typically orange) in the W2/OB equipment terminal on SmartZone.

What is the O/B dip switch and what does O-B do?

The dip switch for O or B determines the way the refrigerant reversing valve works for cooling and heating mode.  The setting you use will be determined by the hvac equipment brand you have.   O will energize the reversing valve during the cooling mode and B will energize the reversing valve during heating.  Typically Rheem/RUUD equipment will require the dip switch to be set to B and all other brands will use O, however, check with the equipment manufacturer to be sure.

Feel free to contact our technical support line at 844-966-3123 if you need additional information or assistance. We appreciate your interest in our line of Ecojay SmartZone control products. Thanks for contacting us with your questions.


CUSTOMER EMAIL: I have a 10 year old Honeywell EMM-3 zone controller. I turned the heater on this year and nothing....The system led on the emm-3 was off, I hit the boot button and the led came on and the heater started to run but a couple of minutes later the led went off and the heater stopped.  Did this twice. Am I correct in assuming its the emm-3 that's bad?  If so I would like to replace it with one of your Ecojay zone controllers.  I have a two zone system installed around 2006.  Will your system work with the existing other components...from what I've read I assume yes.

ANSWER:   Based on the information you provided it would seem likely your EMM-3 zone controller has bit the dust.  You should check to make sure the R and C wires at theZONE PANEL TRANSFORMER connector at the bottom right corner of the zone board are securely tightened to ensure the transformer power connection wires are not loose and causing intermittent power loss.  Ecojay's ZS2X-2.0 and ZS2L-T are compatible replacements for your EMM-3. If your dampers work properly with the EMM-3 they should work the same way with Ecojay zone controls.  Same goes for your thermostats.  (Must have a COMMON wire)

 


What is the difference between the 2X and the 2L (SmartZone Lite)?

 

The 2X and 2L-T are the same functionally speaking. They are both multi-stage compatible (up to 2 cool/3 heat stages) for conventional gas/electric, heat pump and heat pump with dual fuel hvac equipment.  Both display supply air temperature, each zone's thermostat call and damper open/close states and equipment operating mode. The most significant difference is the 2X has more granularity for adjusting equipment high/low temperature limit equipment protection settings. The 2X limit settings can be adjusted in 1 degree increments and the 2L-T gives you the option of 2 fixed low and high limit temperature settings. The 2X includes a supply air temperature sensor in the box whereas the 2L can be ordered with (ZS2L-T) or without (ZS2L) a sensor. We strongly encourage ordering a supply air temperature sensor with the 2L. Do not use the sensor from your existing EMM-3.  Beyond those differences, the ZS2L-T is at a lower price point. Both zone controllers, as do all Ecojay products we offer, include a 5 year replacement warranty.


CUSTOMER EMAIL: I recently purchased and installed several of your 3 wire zone dampers using an existing control system. During the process I released the clutch and opened and closed the dampers several times for temporary operation.  Do I need to go thru a setup process?  Can the actuator figure out the damper position?

ANSWER: The actuators will "reset" themselves back to correct open and closed positions the next time they are powered by the SmartZone panel.  There is no need to adjust or configure the dampers after the clutch has been pressed and damper blade rotated.  If, however, the "u" bolt that holds the shaft is loosened then the damper blade should be oriented is in the same position as the motor (open or closed) when it is re-tightened.


Question: What would be the best settings for a Carrier 5 Ton Geothermal Unit with 3/2 Heat Cool?  Would you set all zones to HP or (Zone 1 to H2) and (Zone 2&3 to HP) and set the Ecobee zone 1 to have some or all control?

I am a little confused by this... Thanks!

ANSWER: Since the zone controller, by default, controls staging for the entire system and knows what all zone are doing you don't need to use the Ecobee on zone 1 to control staging unless you have a particular situation or preference to use it that way.  Your equipment will normally operate more efficiently under most circumstances which should translate to lower utility costs if you allow SmartZone to handle staging.

The most common practice we see with heat pump equipment using SmartZone is to use a HP thermostats on all zones.  This tends to be the least confusing way of operating the system.  One not is that you can ONLY control Em. Heat from ZONE 1.  For this reason, some people choose to use a GE stat on zones 2 - 4 to eliminates the confusion about where emergency heat can be manually controlled.  Since, most thermostats can be configured for both HP or GE operation so it is your preference. The critical step is that you set the STAT TYPE on SmartZone to the type of thermostat installed on each zone.  See INSTALL GUIDE


EMAIL QUESTION:  I have a 2 zone forced air (gas) heat/cooling system controlled via a DuroZone SWZ-SW zone controller and paired with DuroZone Multiline dampers (4) total. Current thermostats are White-Rodgers. I want to replace the current thermostats with a pair of Nest thermostats. Apparently the existing zone controller is not compatible due to the reliance on both O and B wires to tell the zone controller what mode the system is in (heat or cool). I stumbled on to this site and the recommended zone controller. Would the SmartZone 2x work in this case? If so are there any guides on installation that would make this easy to accomplish?

ANSWER: SmartZone control products are compatible with the Nest thermostat and all 24VAC hvac equipment including gas/electric, heat pumps and heat pumps with dual fuel.. You can follow the link below to view the SmartZone Installation manual on the Zoning Supply website. Please contact us by phone at 844-966-3123 or email with any questions about SmartZone installation, operation or zoning in general.

http://zoningsupply.com/smartzone-guide/
HERE IS HOW TO WIRE THE DAMPERS: http://zoningsupply.com/blog/smartzone-can-be-used-with-any-24v-damper


QUESTION: I have a Lennox variable speed modulating furnace. Will your system work with my furnace?

ANSWER: If your controls are 24VAC (most residential hvac systems are) the furnace should work with our SmartZone controls.  If you are not sure if you have 24VAC controls, remove your thermostat from the wall and look for wiring terminals labeled W, W1 or W2. These are the circuits that control the furnace for 24VAC systems. If you have any of these terminals on your thermostat and have wires connected to any of them your furnace is compatible with SmartZone. 

QUESTION: Can more then one damper be wired to one damper output? Have 3 zones that have 2 supply ducts each.

ANSWER: You can connect 4 spring dampers and 10 power dampers to each damper connector so you will easily be OK.  For 3 zones you will need the SmartZone ZS4X four zone controller.

SmartZone can be used with any 24V Damper

Supportzoning supplyComment
honeywell ard mard to smartzone wiring
smartzone to honeywell damper
smartzone durazone damper

There are many different models of 24VAC dampers available on the market.  Some have 2-wires, some have 3 wires, some have 5 wires and some even have 8 wire terminals.  Nearly all of these can be used with the SmartZone products (2L, 2X & 4X).  Both 2 and 3 wire dampers are straight-forward to wire and even shown in the installation guide that comes with SmartZone.  However, some of the less common types of dampers (4, 5, 6 & 8 wire) require a little more understanding.  How to wire some of them are shown below.

If you have any other type of damper, please contact us and we will help you.

 

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