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HVAC Zone Controls & Zoning Dampers

zoning damper

Solving Hot and Cold Spots with Ecojay SmartZone: The Key to Ultimate Home Comfort

homeowners, Zone Control Infozoning supplyComment

The Problem: Uneven Temperatures in the Home

Have you ever noticed that certain areas of your home always seem to be hotter or colder than others? Maybe the upstairs bedrooms feel like a sauna in the summer, while the basement is freezing year-round. These temperature imbalances are a common problem in many homes, and they can lead to discomfort, higher energy bills, and unnecessary wear on your HVAC system.

The root cause of this issue is the way traditional HVAC systems operate. Most homes have a single thermostat that controls the temperature for the entire house. This means your system is either heating or cooling the whole home based on the temperature in just one location—often the hallway or living room. This single-point control doesn’t account for natural variations in temperature due to sunlight exposure, room usage, or airflow inefficiencies. As a result, you end up with hot and cold spots, leading to an ongoing battle with fans, space heaters, and constant thermostat adjustments.

The Solution: Smart HVAC Zoning with Ecojay SmartZone

Ecojay’s SmartZone system is designed to eliminate these temperature imbalances by intelligently controlling airflow throughout your home. Instead of relying on a single thermostat, SmartZone allows you to divide your home into multiple climate-controlled zones, each with its own thermostat. This means your HVAC system can send conditioned air only where it’s needed, rather than wasting energy heating or cooling the entire house when only certain areas need adjustment.

SmartZone works by using motorized dampers installed within your ductwork. These dampers open and close to direct airflow precisely where it's needed, based on the temperature settings in each zone. If your upstairs bedrooms are too warm, SmartZone will send more cool air to those areas while reducing airflow to other parts of the home that are already at a comfortable temperature. Conversely, during colder months, it ensures heat is delivered to rooms that need it most, eliminating the common problem of freezing basements and chilly bedrooms.

How SmartZone Improves Home Comfort

1. Addressing Hot Spots

One of the biggest benefits of SmartZone is its ability to tackle those notoriously hot areas in your home. South-facing rooms, upper floors, and rooms with large windows often receive excessive sunlight, making them warmer than the rest of the house. With a standard HVAC setup, these rooms remain hot because the thermostat in a different part of the home may not detect the higher temperature. SmartZone solves this by ensuring that cool air is directed to these problem areas exactly when it's needed, keeping the entire home comfortable.

2. Eliminating Cold Spots

Just as hot spots are a problem, so are cold spots—especially in basements or rooms that lack sufficient airflow. SmartZone allows you to send more warm air to these spaces without overheating the rest of the home, creating a balanced and even temperature throughout. No more bundling up with extra blankets or using space heaters just to make one room livable.

3. Customizable Comfort for Every Family Member

Every household has different temperature preferences. Some people like to sleep in a cool room, while others prefer a warmer environment. With SmartZone, each person can set their own preferred temperature for their bedroom or living space. This means no more thermostat wars between family members—everyone gets the comfort level they desire.

4. Energy Efficiency and Cost Savings

By directing heating and cooling only where it’s needed, SmartZone prevents wasted energy, reducing your HVAC system’s workload. This leads to lower energy bills and extends the lifespan of your heating and cooling equipment. Instead of running at full capacity for the entire home, SmartZone helps your system operate more efficiently, reducing wear and tear over time.

5. Smart Integration and Automation

Ecojay’s SmartZone system can be integrated with smart home technology, allowing you to control your home’s climate remotely. Whether you’re at work, on vacation, or just lounging in another room, you can adjust settings using a smartphone or tablet. Additionally, SmartZone can learn your household’s heating and cooling patterns, optimizing comfort and efficiency automatically.

Other Comfort Benefits of SmartZone

Beyond solving hot and cold spots, SmartZone provides additional advantages that contribute to a more comfortable home environment:

  • Reduced Noise: Traditional HVAC systems often operate at full blast to heat or cool the entire house. With SmartZone, your system can run at lower speeds more often, resulting in a quieter operation.

  • Better Air Quality: By controlling airflow more precisely, SmartZone helps distribute air more evenly, reducing stagnation and improving indoor air quality.

  • Extended Equipment Life: Because your HVAC system doesn’t have to work as hard, it experiences less strain, leading to fewer breakdowns and a longer lifespan.

Is SmartZone Right for Your Home?

If you’re struggling with temperature imbalances and looking for a way to improve comfort while also saving on energy costs, Ecojay SmartZone is the perfect solution. It’s ideal for:

  • Multi-level homes where upstairs rooms get too hot or too cold.

  • Homes with large windows or sunrooms that experience extreme temperature variations.

  • Families with differing temperature preferences.

  • Anyone looking to increase HVAC efficiency and reduce energy bills.

Conclusion

No one should have to deal with hot and cold spots in their home. Ecojay SmartZone offers a powerful yet simple solution to this common problem by intelligently directing airflow where and when it’s needed. By customizing comfort for each zone, improving energy efficiency, and integrating with smart home systems, SmartZone transforms the way your HVAC system operates, ensuring a comfortable and balanced home environment all year round.

If you’re ready to take control of your home’s comfort and eliminate temperature imbalances for good, consider upgrading to Ecojay SmartZone. Your home—and your family—will thank you.

SmartZone-4X 3.0
Sale Price: $269.99 Original Price: $299.00

Need more than 40VA to power LOTs of dampers on one SmartZone?

HVAC Contractors, Supportzoning supplyComment

Some systems with many small ducts leading to each zone can require lots of dampers.  The example below is a 2 zone system that requires 6 dampers per zone (12 total).  If you look at the zoning guide, you will find that you should budget for at least 55VA for this system... but you only have 40 VA transformers.  75 and 100 VA transformers can get VERY expensive!  Instead you can use two 40VA transformers, but not how you think.  It can be dangerous and unreliable to connect transformers in parallel to create ~80VA.  We recommend the method below that employs the use of a simple relay to separate half of the dampers to be powered from a second transformer and the other half being powered by the SmartZone and it's transformer.

See the SmartZone Install Guide to calculate required VA.

It is always necessary to verify that the PRIMARY side power is sufficient to power the transformer connected.  A dedicated PRIMARY circuit is best but not always possible.  If sharing the 110V or 220V circuit, make sure the total power required for all devices connected (including zoning transformers) doesn't exceed the capacity of the circuit (usually 15 or 20 AMPS).

Where to get a relay?
Any 24V relay with a DPST or DPDT configuration will work.  The one pictured in the above diagram is available at ZoningSupply.com (see below).   If you are chosing your own relay, the "Contact" current rating will determine how many dampers can be connected.  (For example: A 10 Amp relay can handle up to 10 power open, power closed dampers)

24V Relay - DPDT
$14.99
 
Power Open/Close Motor
from $79.99

New & Improved Rectangle Dampers available at ZoningSupply.com

Products, HVAC Contractors, ZoningSupplyzoning supplyComment

Tired of flimsy residential-grade rectangular dampers that easily bend and bind and, worse yet, stop working prematurely.  We, at ZoningSupply, are too!  And, we have the answer with this commercial-grade, super-duty rectangular damper.  Like all of our power dampers, it includes the best motor in the industry (Belimo) and now is constructed with heavy guage aluminim for rigidity and long-life.

Heavy-Duty

Rectangle Damper

Rectangular HVAC Dampers
from $199.99

6" X 6" thru 24" X 24"
SUPER Heavy-Duty
Aluminum rectangular damper w/ Ecojay by Belimo motor
Built to stand up to use and abuse

ATTENTION:

Due to delays receiving raw materials, the shipping time on these custom rectangular dampers has been extended: UP TO 3 or 4 WEEKS

We are very sorry about this delay and will be back to normal shipping times very soon! Please call us if you have any questions or concerns about your order.

DELIVERY TIME: UP TO 3 Weeks

(because they are custom made to order)
RETURNS for rectangular dampers require 20% restocking fee because they are custom made to order... please be sure you order the correct size.

NOTE: The motor will always be mounted on the “HEIGHT” side

No other rectangle zone damper on the market is as sturdy or reliable.  Simplicity of design and precision manufacturing in the USA (Ohio & Texas) make for the BEST rectangular damper that has ever been available to the residential zone control market.  Try it for yourself today.

Best damper motor (actuator) on the market... we tested them all.

Productszoning supplyComment

Well, maybe not technically ALL of them but dozens and even more than in this photo.

We narrowed down by specs that would work for us first.  Between 30 and 60 second travel time, 90 deg rotation, at least 1.5nM torque, lower than 3.5VA power consumption, 24Vac operation, clutch free movement, minimum open/close, range of 3/8" to 1/2" shaft and more.  Once we narrowed down to here we still had about 6 or 8 motors and we tested the top 5 for full 10 year accelerated life and field testing.  Some we even used in production for a while.  We are now confident when we proclaim that the Belimo motor that is made for ecojay and we sell with SmartZone wins in all categories... reliability, noise & installation/setup.

ecojay smartzone hvac zone damper actuator motor
PRO-Grade Power Zone Damper (Round)
from $69.99
Power Open/Close Motor
from $79.99

Zoning System Troubleshooting

Supportzoning supplyComment

Because a zone control system interacts with so many different parts (thermostats, transformers, heating/cooling equipment, dampers & temperature sensor), a zoning system can be daunting to troubleshoot when there is a problem.  However, we have realized that there are really just a few common issues are the cause most all of the issues. With a combined 20+ years of zoning questions and technical support calls, we have tried here to boil down to the top 5 reason 99% of zoning systems have a problem.  These do not include a potential problem with the configuration of the Zone Control itself.  The troubleshooting of the zone control configuration is covered well in most Installation Guides.

1. Equipment
   Refrigerant charge, fan speed, wiring, power, etc.
   Always verify that the equipment is working properly first!
2. Thermostats
  a. Incompatible with zone panel
  b. Defective thermostat
  c. Wiring defect
3. Zone Dampers
  a. Actuator failure
  b. Mechanical failure
  c. DUCT Sizing (not enough or too much CFM)
  d. Wiring defect
4. Bypass/Relief
  a. Actuator failure
  b. Sensor (Static Pressure sensor defect)
  c. Mechanical failure
  d. Setup (Modulating calibration or weight arm setting)
  e. Orientation of installation (SPC or barometric bypass)
  f. Improper sizing (not enough CFM capacity)
  g. Wiring defect
5. Power
  a. Transformer fuse
  b. Wiring defect
  c. Primary circuit problem (shared/capacity, breaker)
  d. Improperly sized transformer (not enough VA)

For help troubleshooting your system contact the experts at zoningsupply.com directly via email or phone.

EASIEST TO TROUBLESHOOT ZONE CONTROL ON THE MARKET:

SmartZone-4X
Sale Price: $239.99 Original Price: $299.00

The parts that make an HVAC Zoning System

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Elements of Zoning

A Zoning System consists of 4 primary pieces:

  1. Thermostats

  2. Zoning Control Panel

  3. Dampers

  4. Equipment

1. Thermostats

SmartZone Thermostat Zoning

Thermostats are used in just the same way that a typical thermostat is used except with a zoning system there is ONE thermostat located in each area or “zone.”  Instead of connecting these thermostats to the equipment like a typical application, with zoning all the thermostats are connected to the Zoning Panel.  Suggest purchasing on Amazon.com or from wherever 24VAC thermostats are sold.

2. Zoning Control Panel

SmartZone-4X
Sale Price: $239.99 Original Price: $299.00
 

The Zoning Panel is the “brains” of the operation.  This computer-like electronic board, reads the calls from all the thermostats and makes decisions about what to energize on the equipment (heat, cool or fan) AND which dampers to open or close.  Zoning Control Panels come in MANY shapes, sizes, and colors but with SmartZone you are just selecting the number of zones)

3. Dampers

 

Not only are the thermostats connected to the Zoning Panel but so are the dampers.  A damper is to airflow in the duct like a faucet is to water in a pipe.  In other words, the damper acts like a valve in the duct system to divert air to the zones where it is needed.

4. Equipment

Finally, the Equipment is also connected to the Zoning Panel.  The equipment refers to the heating and cooling (HVAC) unit.  This can come in many shapes, sizes, and configurations.  In order to apply zoning to any equipment, the correct zoning Panel mush be chosen.  Some Zone Panels are very specific and can only be used with certain types of equipment while some are much more versatile and can be used on almost ANY type of equipment used.


The above four parts make up the pieces of a Zoning System, but since in a standard system you already have two of these parts (THERMOSTAT and EQUIPMENT).  The addition of a zoning system really consists of adding only two different parts, a ZONING PANEL and DAMPERS.   This makes zoning one of the easiest and affordable ways to gain the much desired improvement of comfort and efficiency.  With these parts installed properly a user can enjoy the ability for both added comfort and increased energy savings.

2, 3, or 4 Zone KITS
from $599.99
 

BEST Spring Open Dampers Now Availble

Productszoning supply1 Comment

ZoningSupply is now offering the BEST quality Spring-Open damper available.  If you have had any experience with SPRING type dampers you already know that they have been known to have a lower reliability than SUPER-DUTY power dampers.  However, the Spring dampers that we are offering have been designed with precision and heavy-duty parts.... they are NOT the typical low-cost damper available from other companies.  If you are not sure that this is the best spring-damper you have every used, send it back and we will refund your purchase price.

  • MADE IN THE USA
  • ALL-METAL GEAR MOTOR
  • FULLL-SEAL GASKET
  • CAPTURED SHAFT (Prevents blade "sticking")
  • 5 YEAR Replacement Guarantee

REPLACES:
Honeywell ARD
EWC RSD
ZoneFirst RDS
DuraZone NSPRD
Braeburn 129 ***
AprilAire AVD 66**
& MANY MORE... ANY 24VAC 2-Wire Damper can be replaced with the ECOJAY SmartZone DSUS.

Also available SUPER DUTY POWER DAMPER

Spring Zone Damper
from $109.99