How to Fix a Frozen AC
A frozen air conditioner may require professional diagnostics for appropriate repairs to be completed. However, there are some causes that may be simply handled without having to call for air conditioning service. Begin with a few DIY troubleshooting steps, and proceed based on the results.
What Causes a Frozen Air Conditioner?
Your air handler is the location where the cooling activity in your home takes place. As refrigerant is moved into the area, its pressure is released, resulting in its drop in temperature. The cold refrigerant draws heat from the surrounding air while causing moisture in the area to condense. The area is cold and damp, and if something interferes with activity in this space, temperatures can cause that condensed moisture to freeze. Three major issues that can contribute to this include:
- Airflow restrictions
- Heat exchange problems
- Electronic malfunctions
Each of these issues may result from a variety of underlying equipment problems, some of which you may be able to rectify on your own.
Shut your frozen air conditioner off to avoid damage to your equipment. Allow your evaporator coils to defrost before you turn your AC back on. In the meantime, check your air filter for blockages. A dirty filter can limit the movement of air into the handling unit. Inspect the interior of your air handler as well, taking note of dirt on the coils. Dirty coils can limit both airflow and heat exchange, resulting in potential freezing. AC maintenance is a good idea in this case, an affordable service that includes coil cleaning.
Check your thermostat for appropriate settings and battery strength. Sometimes, low batteries can affect the operation of your system controls and result in unusual activities. After you’ve checked your filter, coils and thermostat batteries and allowed your equipment to defrost, turn your AC back on and monitor for problems. If the ice returns, you may require professional air conditioning service.
Should I Call for AC Repairs or Maintenance?
If your coils are dirty or you’ve never had maintenance service performed, this may be a good starting point. During a maintenance call, your cooling professional will clean coils, test refrigerant levels and inspect and adjust moving parts such as your blower. He will also test electronic components. This service is great for countering performance problems attributed to normal wear and tear, and if repairs are needed, recommendations and estimates will be given.
Mike Merritt Heating & Air is also available 24 hours a day for emergency AC repairs. If you can’t get your system to operate during extreme weather conditions, you can obtain prompt service to fix the problem. We are available to answer your additional questions or schedule an appointment for your home in the Jacksonville, FL, area when you call our office.