Life becomes a lot less comfortable when the air conditioner starts blowing room temperature or hot air. If this happens, you need to call an AC technician immediately. One of several common problems is probably happening to your AC, but homeowners aren’t equipped to deal with most of these problems alone.
The Coils Are Dirty
The coils inside your AC are filled with refrigerant, which is responsible for cooling the air that passes through the AC and your ducts. If the coils are dirty, the air that passes over them isn’t properly cooled. As a result, you end up with slightly cooled air, or room temperature air, instead of cold air blowing from your vents. Don’t try to clean the coils yourself, though, because you could damage them.
The AC Lost Power
When your AC loses power, sometimes essential power components are damaged. Even if the AC kicks back on and the fan continues to blow, you won’t be getting the cool air you want. Since the fan is on, figuring out why the AC isn’t cooling is very difficult for a homeowner. In order to tell that power components are damaged, you need a professional to come take a look.
The Refrigerant Is Low
When the refrigerant in the AC coils is low, it can’t properly cool the air that blows over the coils. Refrigerant leaks and other damage will cause the loss of this substance. It’s not like gasoline in your car, though. You can’t go out and buy new refrigerant and replace it yourself. You need a professional to measure the amount lost and carefully replace it. The professional will also find the leak that causing the AC to lose refrigerant.
The Thermostat Is Incorrect
Thermostats give bad readings for many reasons. Maybe your thermostat is on a wall that’s always in shade, so it measures the house’s temperature as being lower than it actually is. The thermostat might say that the HVAC system is switched to AC mode, when in fact it’s in fan mode and it isn’t working to cool your home. It could also have lost calibration, meaning your HVAC system doesn’t know when to turn on and off.
Dirt Is Clogging the Filter
Image via Flickr by HomeSpot HQ
One simple problem all homeowners can fix involves the air filter. If the air filter gets dirty, the HVAC system blower has a harder time pulling air through it. That dirt can end up on the coils or in the ducts, too. In bad cases, the low air flow over the coils can cause them to freeze, which completely halts any cooling your AC can do. Change that filter at least once a season, preferably once every one to two months.
Don’t let these AC problems exist for long in your home. The sooner you call someone to repair the AC, the sooner your house will be comfortable again. Plus, allowing a broken AC to keep running may cause further damage to the inner components, which will cost you more to fix later on.