After a long day at work, you’re tired, hot, and just want to relax in the comfort of your own home. But when you open your door, you’re greeted with warm air. It can be extremely frustrating to find that your air conditioner is blowing warm air and the culprit could be a number of things.
As a homeowner, the last thing you want to do is come home and find that your AC system is blowing warm air. If your system is blowing warm air, it’s a sign that something isn’t working as it should be. Luckily, it may be an easy fix you can do yourself.
4 Reasons Your AC Is Blowing Warm Air
Here are some of the most common reasons why your AC isn’t blowing cold air and what you should do about them.
Below are some of the most common reasons why your AC isn’t leaving you feeling cool and comfortable and what you can do about it.
1. The Thermostat is On the Wrong Setting
Before you curse the AC gods, take a deep breath and check the thermostat. Checking the thermostat is the first thing you should do if your AC is blowing warm air because it’s the easiest fix. There’s a possibility that you may have accidentally switched the thermostat to ‘OFF’ mode or perhaps the settings got switched by another person in the home. Check the device and make sure it’s set to at least five degrees below the temperature of the room.
2. Clogged Air Filter
If your thermostat is on the correct setting, make sure you check to see if the air filter is dirty. Air filters are by far the most neglected part of an AC system even though they’re an essential component. If your air filter is dirty, it could be causing your AC system to blow warm air or stop blowing air altogether if it gets bad enough. A good rule of thumb is to change your air filter each month to keep your air conditioning system in top shape.
A clogged air filter can lead to other issues which can make your AC system blow warm air. A dirty air filter can lead to increased dust in your home and cause issues with the condenser coils which may contribute to warm air coming from your AC. The air filter is one of the most neglected components of an air conditioning system yet it is one of the most important. One of the simplest ways to prevent your AC system from blowing warm air is to change the filter each month.
3. Refrigerant Leak
This is one of the more serious issues that could be causing your AC to blow warm air. Refrigerant is used to cool the air that is pumped through your home, so when levels get low from a leak or other issue, your system may not cool as efficiently as it could. If you notice that your system is starting and stopping frequently, this could be sign of a leak. If you suspect this is the case, contact an HVAC professional immediately. Refrigerant leaks can be dangerous and require a certified technician to fix the issue.
4. Dirty Condenser
If your AC is blowing hot air, one of the first things you should check is the condenser. A dirty condenser can not only cause the system to blow hot or warm air, but it means your system isn’t functioning as efficiently as it could be. To clean the condenser, turn off the unit and inspect the metal box that houses the “off” switch. Once the system has powered down, remove the grille and locate the coils and fins. Clean any debris from the unit and carefully dust the coil and fins. Once the debris has been removed and system has been dusted, check to see if the unit cools normally.
A malfunctioning AC is frustrating, but it’s nothing that a local HVAC company can’t fix.