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There’s nothing more annoying than your AC blowing warm air on a hot, humid day. This makes staying indoors incredibly uncomfortable, requiring immediate troubleshooting and fixing. Like any other appliance, your AC can malfunction at the least expected time. However, your AC blowing warm air can be a significant cause for alarm since many things could be causing this problem.
Some causes are easy to identify and fix, while more complex ones require air conditioner service to get your unit blowing cold air again. You must determine the cause of the problem so you can know when to seek help from a qualified AC professional. Here are some common reasons your AC might not be blowing cold air:
1. Low Refrigerant
One of the main things that could be causing your AC to blow warm air is low refrigerant. Your AC refrigerant keeps your unit operating at its best since it helps absorb humidity and heat from the air. Your AC may only cool efficiently when the unit has enough refrigerant. Often, your AC refrigerant could become low when there’s a leak.
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If your AC blows warm air because of low refrigerant, you must immediately find and repair the leaking spots. Common signs of a leaking refrigerant include ice buildup on the exterior unit and hissing and bubbling noises. Not fixing the holes can cause more significant problems like damage to the compressor motor, requiring costly repairs.
2. Thermostat Problems
Another common reason your AC blows warm air could be thermostat problems. Your AC unit could experience this problem, mainly if it uses the older control systems. Use the unit’s manual to check if the thermostat is set correctly. Try changing the thermostat settings from ‘on mode’ to ‘auto mode’. In addition, check if the thermostat is set to heat mode. If the issue persists, consider calibrating or replacing the old dial-type system with a newer, programmable thermostat. This will help keep your unit operating efficiently, keeping your indoor temperature consistently cool while saving energy.
3. Dirty Air Filters
Your AC could also be blowing warm air due to dirty air filters. When your air filters become clogged, it hinders airflow through the ducts. This causes the evaporator coils to freeze, making your air conditioner emit warm air. Dirty air filters can also cause the thermostat to malfunction, preventing your AC from cooling effectively. Replacing your AC filters regularly with clean, more efficient filters can help remedy the problem instantly. It would help if you also considered cleaning your air filters at least every three months or as soon as they become dirty.
Ready to find your dream home in Colorado?
Let us help you. Call or Text Kenna Real Estate Group at 303-955-4220 to get personalized assistance from our expert real estate agents. Find out what your home is worth in today's market.
Endnote
Those mentioned above are some common reasons your AC could emit warm air. If your air conditioner starts to blow warm air, check if one of these things could be causing the problem. This will help you fix your AC and get it running again quickly. If none of these things is causing the issue, contact an AC specialist to identify other possible causes and repair your AC unit as soon as possible.