Why is My A/C Blowing Out Warm Air? - Ernst Heating & Cooling

Why is My A/C Blowing Out Warm Air?

AC blowing warm air

When the summer heat hits Metro East Illinois and the surrounding areas, you want your home’s A/C to provide cool relief. An A/C unit blowing hot air can be a home comfort catastrophe, especially if it strikes during the hottest summer months. You can depend on Ernst Heating & Cooling for all of your HVAC needs, including that A/C unit that isn’t being very cool to you and your family.

What’s happening when the A/C is blowing out warm air, and how can you get the cool relief you crave? Read on.

5 Reasons why your A/C unit is blowing warm air

There are many reasons why you’re getting a hot air blast from your home’s A/C, ranging from quick fixes to repairs that might require a call to Ernst Heating & Cooling. These include:

  1. Your thermostat isn’t set to cool. There’s no judgment here. Anyone can turn off the A/C during a cool night and forget to turn it back on in the morning. Double-check to ensure your thermostat is set to cool and the fan is set to “auto” rather than “on.” That means the A/C fan will only kick on when there’s cool air ready to be dispersed throughout your home. If you don’t always remember to set the thermostat back to the A/C setting, consider investing in a programmable thermostat that lets you control the schedule.
  2. The air filter is clogged. Your HVAC unit’s air filters must be changed regularly, or they can become clogged with dust and debris. That means the system must work harder to push air throughout your home. Change your air filter according to the manufacturer’s directions or if it looks noticeably dirty when you check it.
  3. Your evaporator coils are frozen. It may sound counterintuitive, but when summer’s most brutal heat hits, the coils inside your A/C unit can freeze. Check your air filter first if you notice visible ice on your unit’s indoor or outdoor coils. A clogged air filter will restrict airflow and cause the equipment to freeze. Sometimes you can thaw the coils by turning off the A/C and letting the unit run with the fan on. If this doesn’t do the trick, call Ernst Heating & Cooling.
  4. Your unit’s refrigerant levels are low. The refrigerant within your home’s HVAC unit is important in absorbing heat and sending it outside. Low refrigerant isn’t a DIY fix. You may be able to avoid this problem by scheduling regular A/C maintenance through the Ernst Comfort Plan.
  5. Your compressor or condenser fan has failed. Your HVAC unit’s compressor and condenser work together to lower the air temperature circulating throughout your home. If one – or both – of them aren’t working, you may notice warm air instead of cool relief.

We get it. When the heat hits, you want your home to be cool. If your home’s A/C is blowing warm air, contact Ernst Heating & Cooling to schedule an air conditioning repair service call. Call us at 618.217.1836 or schedule your appointment online now! Our trained HVAC technicians can determine what’s causing the problem and recommend the proper fix.

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