If you’re in the middle of a heatwave, your home AC unit is the last thing you want to worry about. But if the AC is blowing warm air, you’ll need to figure out what the problem is and get it fixed ASAP.
Once an AC breaks down completely, it can be very expensive to fix or replace. So, before this happens, you need to know how to identify and fix some simple problems.
Read on to learn how to figure out why your home AC blowing warm air and how to fix it with ease.
Evaporator Coils Are Frozen
If your home air conditioner is blowing warm air, it’s possible that the evaporator coils are frozen.
This can happen for a number of reasons, such as if the air conditioner is set too low or if there’s a problem with the airflow.
If the coils are frozen, the air conditioner won’t be able to cool the air properly, so it’s important to fix the issue as soon as possible. You can usually thaw the coils with a hairdryer, but if the problem persists, you may need to call a professional.
The Compressor Isn’t Working
The most common reason is that the compressor isn’t working. The compressor is responsible for circulating the refrigerant throughout the AC unit. If the compressor isn’t working, the AC unit can’t cool the air.
The Thermostat Isn’t Set Correctly
If your home air conditioner is blowing warm air, it’s likely because the thermostat isn’t set correctly. The most common reason for this is that the thermostat is set to “heat” instead of “cool.”
Another possibility is that the thermostat is set too low. Either way, the result is the same – your home isn’t cooling down. You can usually fix this problem yourself by simply adjusting the thermostat.
Poor Insulation
If your home is poorly insulated, warm air can escape through the walls, ceilings, and floors, making your home AC unit work overtime to compensate.
This can cause your AC unit to blow warm air, as it struggles to maintain a cool temperature in your home.
To prevent this from happening, make sure your home is well insulated, particularly in areas where warm air is likely to escape. This will help your AC unit run more efficiently, and keep your home cooler.
Clogged Air Filters
A clogged air filter impairs the flow of air to the unit, causing it to work harder and ultimately overheat. In some cases, a clogged air filter can also cause the unit to freeze up. Regularly changing your air filter is the best way to prevent this problem.
Contaminated Refrigerant
One possibility is that the refrigerant is contaminated. Your AC unit relies on this refrigerant to help cool and dehumidify the air inside your home, so if it’s contaminated, it can’t do its job properly.
Although it’s possible to clean the refrigerant and reuse it, it’s usually more cost-effective to replace it entirely.
Freon Leakage
There are a few reasons your home air conditioning could be blowing warm air, but a Freon leakage is one of the most common. It is a refrigerant that helps to cool the air inside your AC unit.
When there’s a leak, either from a faulty unit or poor installation, the Freon can leak out and cause your AC to blow warm air. Not only is this a frustrating problem, but it can also be dangerous as Freon exposure can be harmful to your health.
If you think you have a Freon leak, it’s important to call emergency air conditioning repair services as soon as possible.
Wrong Size
If your home air conditioning unit is blowing warm air, it could be the wrong size for your home. A unit that is too large will cool the space too quickly and then shut off, leaving the space feeling warmer than it did before.
A unit that is too small will run constantly and still not adequately cool the space. In either case, an HVAC contractor can help you determine the best size unit for your home.
Wrong Placement
If your AC is blowing hot air, it could be due to improper placement. Placing your AC unit in direct sunlight can cause it to overheat, which will prevent it from blowing cold air.
Placing your AC unit in an enclosed space can cause it to work harder to circulate air, which can also lead to warm air being blown. Make sure to place your AC unit in a cool, shady spot to help prevent this problem.
Not Receiving Enough Power
It could be because the unit is not receiving enough power. Check to make sure that the circuit breaker is not tripped and that there is power going to the unit. If the problem persists, call a professional to check the unit and repair any issues.
Check Your Ductwork
Over time, your ducts can become clogged with dirt, dust, and other debris, which can prevent proper airflow and cause your AC unit to work harder than necessary.
Checking your ducts on a regular basis and having them cleaned as needed can help to improve the efficiency of your AC unit and keep your home cool and comfortable.
Check Why Your Home AC Blowing Warm Air Today
If your home AC blowing warm air, there are a few potential causes. Whatever the reason, it’s important to get it fixed as soon as possible so you can stay cool and comfortable all summer long.
If you are unsure of the cause, it is best to contact a professional for assistance.
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