It’s a miserably hot day, and you decide to turn on your air conditioner. You expect the cool air that it’s been delivering for years, but today, the air is warm. No matter how low you set your thermostat, the air stays warm. Here are some reasons why this can happen.
Clogged Filters
One of the most common reasons your air conditioner blows warm air is clogged filters. This is not only frustrating, but it’s the easiest problem to fix. Anyone can regularly change or clean the filters in their AC system. Make sure to change them every few months or even more often if there’s a smoker, pets, or someone who has allergies or respiratory issues in your household.
The Refrigerant Is Leaking
Refrigerant is a chemical that helps your air conditioner remove heat from the air. If refrigerant levels are low, the AC struggles to keep the air as cool and comfortable as you’d like. Fixing this problem is not a task for a homeowner. Call an HVAC professional to locate and repair the leak and recharge the system properly.
Thermostat Problems
Another reason your AC is blowing warm instead of cool air is a problem with your thermostat. The thermostat communicates with your HVAC system and tells it how much to warm or cool your air. The thermostat may not be set to “heat” or may be toggled to “fan” mode. The problem may also be as simple as low batteries. If you suspect there’s a problem with your thermostat and can’t find or fix what’s causing it, get in touch with your HVAC professional.
Dirty Condenser Coils
Like your AC filter, your condenser coils won’t work well if they’re dirty. You can very carefully clean them yourself after turning off the AC’s power at the circuit box. You’ll need to take care not to bend the fins that are on the coils, however. If that makes you nervous about cleaning your condenser coils, it is best to call an HVAC professional.
Dirty Evaporator Coils
Like dirty filters and dirty condenser coils, dirty evaporator coils can affect your AC’s ability to blow cool air into your house. It’s possible to clean evaporator coils yourself after you remove power to the AC unit by pulling the AC disconnect switch. However, a professional is best suited to do this.
Few things are more aggravating than your air conditioner not working on the hottest day of the year. If you need AC replacement or repair services, get in touch with our HVAC professionals at McHales of Levittown, PA.