May 25, 2022

Having and using an air conditioner really only has one main purpose: to keep your home or office cool during hot weather. So it’s natural to think that something may be wrong or broken when we start feeling hot air from our AC unit.

However, jumping to the conclusion that your HVAC is broken at the first sign of hot air from the AC isn’t entirely right. There are a lot of different parts that work together to provide the cooling we expect from an air conditioner. Today, we’re going to discuss some possible reasons why your air conditioning is blowing hot air. 

Thermostat issues

The first thing you should check when your air conditioning is blowing hot air is the thermostat. It might not be the first thought that comes to mind, but sometimes the thermostat can be tampered with without us knowing. Whether it’s pesky kids or just the settings getting changed unknowingly, check to see that your AC is on “cool” and set to the proper temperature. 

You should also check to see if it needs new batteries and replace them when needed. If you suspect that your thermostat is broken, best to call a HVAC company in Liverpool, NY to see if anything can be fixed. 

Loss of power

The next thing you should check is if power might have been cut to the AC or the HVAC’s outdoor unit. We all have circuit breakers at home that are designed to cut off power as a safety precaution and sometimes we don’t notice when this happens. That’s why it’s worth taking a look at your electrical panel to make sure that power is properly supplied to your HVAC. 

Clogged filter and dirty evaporator coils

Now we check on the actual parts and internals of your AC. A leading cause of hot air from your AC is a clogged filter and/or dirty evaporator coils. When you have poor airflow in your AC, this can impede its ability to cool thus blowing hot air. Aside from the filter, if your evaporator coils are dirty and not enough air goes through them, they can freeze over, again preventing your AC from cooling air and blowing more hot air. 

What you can do is to clean or replace your air filter every 30-60 days. This is something that any AC owner can do and doesn’t require any professional assistance. If you notice that your evaporator coils in the indoor unit are frozen, this is a sign that not enough air is passing through. If the air filters are clean and brand new, then it might mean that you need to have your AC deep cleaned by a professional. 

If you frequently experience your air conditioning blowing hot air and that your evaporator coils are freezing despite clean filters and coils, then there could be cracks in your air ducts that will require the help of a HVAC company in Liverpool to fix. 

Condenser coils and a dirty outdoor unit

If you’ve checked the indoor unit of your AC, then the next thing to check is the outdoor unit and its condenser coils. Just like the indoor evaporator coils need free airflow, so do the condenser coils found in the outdoor unit. These coils are responsible for transferring heat from inside your home to the outside. 

If your unit is clogged and dirty, you should turn off the unit at the source. Then remove any large debris with gloved hands and then rinse off the smaller debris with a garden hose. 

Refrigerant leak 

The last possible problem is your AC may be low on refrigerant. This must be fixed by a professional as refrigerant is highly dangerous. But don’t also trust a technician who simply tops up on refrigerant. This runs on a closed loop system so if you’re missing some, that means there’s a leak somewhere in the system. In this case, call a trusted HVAC company in Liverpool, NY like Heat Wiser.

Whether it’s fixing a leak of refrigerant, deep cleaning, or essential regular maintenance and service, Heat Wiser has your back when fixing air conditioning that’s blowing hot air. From repairs, maintenance, to AC installation services in Liverpool, NY, Heat Wiser is the company you can trust for reliable and professional HVAC services.