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Central Air Conditioner

Why Is My AC Blowing Hot Air?

As temperatures begin to rise, your air conditioner is working around the clock to cool your home. While no one wants their AC to break down or need repairs, it is likely to happen. One of the most common issues homeowners face in the summer is an air conditioner blowing warm air. 

This can cause your home to become muggy, hot, and uncomfortable during the hottest days of the year. Squeaks has been providing fantastic AC services to Boulder, CO, and the surrounding areas for years! We know how much of a headache a situation like this can be. That’s why we are here to help you and your family restore cool air into your home. 

Here are some reasons why your AC is blowing hot air and how to prevent it in the future!

Issues With Your Thermostat Setting

It is crucial to double-check that your thermostat is set to cool, not heat. If you still experience hot air, make sure the fan is set to “auto.” If it is just set to “on,” your air conditioner will continue blowing hot air because the fan will run even when the air conditioner isn’t cooling. Also, check the batteries to make sure your thermostat is operational.

Lack of Refrigerant

Refrigerant is essential to maintaining cool air in your home. This chemical compound transfers heat energy from inside to outside your house. If there is a leak, you will most likely feel very little, if any, cold air blowing through your vents. 

Another way you will be able to tell if there is an issue with your refrigerant line is if you hear hissing noises coming from your AC system or if you see ice buildup on the outside unit. It is vital that you call an AC repair service if you believe there is a refrigerant leak.

Dirty Air Filters

With everything going on in your life, maintaining your air filters may be the last thing on your mind. However, when your AC starts blowing hot air, unchanged, dirty air filters may be the reason why. If your air filters are clogged, cool and warm air will not be able to travel from one unit to another. 

If neglected for too long, the damage can reach your evaporator coils, releasing warm air into your house. Make sure to change your filters every two to three months for the best results!

Shortage of Electricity 

The most common setup for air conditioning systems is having one outside unit and one inside unit. Hot air flowing through your home can occur because your exterior component lost power. You can check this by looking at your circuit breaker to see if it tripped or if a fuse has blown on the electrical circuit. If you encounter any of these issues, be sure to call a professional to come in and fix them.

Dirty Evaporator and Condenser Coils 

Evaporator coils remove heat from your home and condenser coils release it outside. Since these parts are found in your outdoor unit, there can be a buildup of debris, dirt, and grime on your coils. This will interfere with their performance, eventually making your AC blow hot air back into your home. 

If your condenser unit is not cleaned correctly, you can expect more parts in your air conditioner to break down, which can lead to more extensive AC repair services. Think of it like this: dirty evaporator coils lead to frozen evaporator coils. The same rule applies to condenser coils. Remember to check out your outdoor unit periodically and remove any dirt or weeds around the unit. 

During the peak of summer, the last thing you need is your AC blowing warm air into your home. The trusted professionals at Squeaks are here to ensure that your airflow is running efficiently and just the way you want it. Check out some of our other services, including our stellar AC installation in Broomfield, CO, and the surrounding areas today! 

Contact us if you are having trouble with your home’s air conditioner or would like some more tips on how to keep your unit running properly.