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5 Troubleshooting Tips When Your Dual Zone HVAC Is Not Working

Is your dual-zone HVAC not working? Or does it not seem to be operating at peak efficiency? There are several culprits that might be responsible, however, there are usually steps you can take to correct the issue. We’ll discuss five of the most common dual-zone HVAC problems and their solutions below.

Common Problem #1: Air Isn’t Flowing Properly

Once you have had a dual-zone HVAC system installed in your home, you will likely notice a significant reduction in energy costs, due to the fact that you are no longer wasting energy in unnecessary areas of the home. However, over time, you may notice your energy bill starting to creep back up as if your HVAC system is losing its efficiency.

Often, this could be a result of your HVAC system struggling due to poor airflow. If air isn’t flowing properly through the system, the rooms will require more energy to reach your desired temperature. In turn, this will ultimately cost you more money on your bill.

Possible Solution: A Thorough Duct Cleaning

If air isn’t flowing the way it should be through your HVAC system, it may simply be due to the fact that dust and dirt have built up inside of your ducts over time. If your HVAC system gets any sort of regular use, the air that it pumps through these ducts will carry dust and dirt within it. Most of this detritus will be caught within the filtration system, where it will stay until it’s cleaned off. If this cleaning is delayed, the filters will become blocked, slowing the flow of air through the entire system. Troubleshooting this is as easy as having the filters replaced and the ducts cleaned, which should be done regularly by an HVAC professional.

Common Problem #2: The HVAC System Won’t Cycle On (Or Off)

Your HVAC system is controlled by a thermostat that controls when it cycles on and off, based on the temperature you have set it to. When the temperature drops too low, the thermostat detects this and turns the heating element on until the room reaches the desired temperature. Once it is, the heating unit turns off automatically. Occasionally, however, this doesn’t seem to work: either the system won’t turn on, even when it’s cold, or it stays on no matter how warm it gets.

Possible Solution: Repair the Thermostat

If the system won’t cycle on when it’s supposed to, chances are a faulty thermostat is to blame. If there’s an electrical issue that’s responsible for your dual-zone HVAC not working, you should remove your thermostat cover and inspect the wiring. It may be a simple matter of adjusting a loose wire. If it’s more complicated, contact an electrician or HVAC professional to come take a look.

Common Problem #3: The Heating Is Uneven

The great benefit of a dual-zone HVAC system is that you can control the heating and cooling in individual rooms. You may, however, notice that this doesn’t seem to be working the way it should. It’s possible that one room may achieve the temperature you desire while another does not.

Possible Solution: Fix Malfunctioning Dampers

Your dual-zone HVAC controls the flow of air from room to room using metal plates known as dampers. These dampers are what divide your home into different zones, adjusting the temperature just so by allowing different amounts of heated or cooled air to reach different areas. However, they require occasional maintenance or they can become stuck. Regularly having the dampers cleaned and lubricated will prevent them from becoming stuck in the first place.

Common Problem #4: The Air Conditioning Stops Working Unexpectedly

Your air conditioning is a complex system, making use of coils filled with refrigerant in order to cool down and dehumidify the air. During the hottest days of the summer, the AC may have to run for hours or even days at a time, as even the nights may be too hot to get enough sleep without cooling the rooms down first. Sometimes, however, the air conditioning simply stops running without warning.

Possible Solution: Let the Whole System Rest

While it may be extremely hot outside, it’s likely that the refrigerant that’s cooling down the air that’s being pumped into your home is becoming colder and colder as the system does its job. If the air conditioner continues on for extended periods of time without a break, a layer of ice may begin to form on the outdoor unit. When it does so, the air conditioning may fail to operate. If this happens, check if there’s ice anywhere on your air conditioning unit. If there is, you may need to shut the system off until the ice thaws.

Common Problem #5: The HVAC System Doesn’t Respond At All

While most problems with your HVAC system are actually relatively easy fixes, some of them may require more in-depth care. A dual-zone HVAC not working may be the result of a need for maintenance or a simple requirement for the system to rest, or it may be due to a minor electrical issue. However, sometimes you will check all of these systems, only to discover that your HVAC still isn’t working.

Possible Solution: Have A Professional Check the Control PanelIt’s quite possible that your HVAC system may be suffering from a faulty control panel. This is the “brain” of your dual-zone HVAC, controlling all of the disparate elements and allowing them to work together. If it malfunctions, the entire system may fail to operate. If that’s the case, you will need to get a highly trained, professional HVAC technician to come in and make repairs. Attempting to DIY this one is usually not a good idea. It’s not only dangerous and could cause further damage, but it may even void your warranty. Contact our experts at Entek HVAC and explain the problem to them; with 24/7 emergency service available, we’ll be able to offer the help you need quickly and effectively.


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