How Does A Dual-Zone HVAC System Work? 

Imagine this: you’re enjoying an afternoon nap in your perfectly cool bedroom, when you notice that you’re starting to sweat– it’s getting a bit hot in here! Somebody must’ve fiddled with the house’s temperature again!

This is a common occurrence in houses with multiple rooms where family members or housemates all share one central thermostat or air conditioner. It becomes quite a problem, especially when each person has their own temperature preferences.

This is where 2-zone or dual-zone HVAC systems come in.

Dual-zone systems allow you to split the house into a number of zones, where each zone can have its own autonomous temperature setting. And the best part? It can all be done with a single HVAC system. No need to install multiple air conditioning units!

How does a zoned HVAC system work?

A zoned HVAC system works by means of motorized zone dampers. These dampers can be found within ducts or air outlets, and numerous dampers are connected to form a single zone.

Each zone has its own thermostat, which can give anyone the ability to heat or cool their respective zones.

The zone dampers then act according to how the thermostat is configured, effectively regulating the air flowing through them.

Pros of a dual-zoned HVAC system

A zoned HVAC system has many advantages, especially for homes with multiple stories, or those with wide areas and multiple rooms.

Customizable temperature 

To completely control the temperature in various areas of the home is an experience that everyone at home can greatly appreciate– no more fighting over the thermostat!

Energy bills with lower cost 

Since there is only a single HVAC system installed, the cost to pay for energy bills is lower compared to having two or more air conditioning units. Dual-zoned systems also utilize variable speed motors, which also cut down costs by, more or less, 30% of the normal energy cost.

Variable speed is notably important for energy saving, as it allows for the system to use only the amount of energy that it needs to achieve a certain temperature.

Lesser cost for maintenance 

Zoned control means that the HVAC system doesn’t work as hard as regular HVAC systems, as unused zones mean that the routing of hot or cool air goes only to open zones.

Cons of a dual-zoned HVAC system

Dual-zoned HVAC systems might not be for everyone, as it does have its disadvantages.

Specific specs for air conditioners 

The air conditioners required for such an HVAC system needs to be two-stage air conditioners. These types are more expensive than the usual single-stage air conditioners, however, this means that they can operate at variable speeds, which is what reduces energy cost in the long run.

Zones cannot be too small 

Each zone cannot be too small, as the system won’t be able to cycle the air through properly. There is a tendency for a single zone to consist of multiple rooms, so it’s best to plot your zones wisely!

Interested in a dual-zoned HVAC system?

Whether you have more in-depth inquiries about zoned HVAC systems, or you’ve already decided to have one installed, it’s best to approach a team that is reliable and experienced with heating and cooling systems.

Here at Jamison, our team of experts are committed to giving you the best of their effort and professional experience when it comes to advising, surveying, installing, and maintaining your preferred HVAC system. Give us a call– our team will be happy to help.



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