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Why is My A/C Blowing Out Warm Air?

A black air conditioning unit for a residential home in Granite City, IL that is blowing warm air from the fans and requires repair.

Most of us depend on our air conditioning systems to get through those blistering summer months — there’s no better feeling than escaping the heat and being greeted by bursts of fresh, cool air. That’s why it’s incredibly frustrating when your AC starts blowing out warm air instead.

At Morrison Plumbing, located in Granite City, IL, we offer high-quality AC installation, AC maintenance, and AC repair services to help ensure that you stay cool during the summer. Here’s a closer look at why your air conditioning system might be malfunctioning and how our services can help you.

You Have Dirty Air Filters

If your AC is suddenly blowing out hot air, there’s a good chance that your air filters are the culprit. If your air filters are dirty or clogged, they can prevent the flow of air through the system, resulting in warm air. In these cases, swapping the dirty filter for a new, clean one is usually enough to resolve the issue.

A close-up image of a dirty air filter from an air conditioning unit in Granite City, IL. Air conditioning repair services from a professional HVAC technician.

You Have A Refrigerant Leak

Refrigerant is a chemical compound that’s used in most AC systems. As the name suggests, refrigerant helps make sure that your air conditioner is producing cold air — it also contributes to the overall function of the system. Thus, if you have a refrigerant leak, your AC is susceptible to a wide range of problems, including blowing out warm air.

Your Evaporator Coils Are Frozen

A standard AC system features evaporator coils, which are responsible for cooling your home by taking heat from the air. Sometimes, moisture can start to accumulate on the evaporator coils, causing them to freeze and produce hot air instead. To determine if this is the issue, you’ll have to open up your system and look at them directly. If you notice ice or frost on the coils, leave the air conditioning system off for 24 hours and let it thaw.

Unfortunately, frozen evaporator coils are usually the result of a larger issue, such as:

  • Refrigerant leak
  • Bad airflow
  • Old or damaged system

To fully resolve the problem, you’ll need to contact our professionals at Morrison Plumbing to address the source.

A close-up image of a frozen evaporator coil that requires professional repair services from an HVAC technician in Granite City, IL.

Contact Our Granite City, IL, HVAC Company Today!

Sometimes, you can fix an air conditioning issue by simply changing the air filters or turning the system off for some time. Other cases, however, may require the assistance of a professional. At Morrison Plumbing, we help residents of Granite City, IL, and the surrounding areas by providing the following services:

  • Drain cleaning
  • Air conditioning repair
  • Air conditioning maintenance
  • Air conditioning installation

Whether you have a minor repair need or are looking to install a whole new system, you can trust our team of plumbers, technicians, and heating and air experts to help. Not only can we assess the state of your current system, but we can also execute the repairs and maintenance necessary to prolong its lifespan. Contact us today at (618) 703-5700 to learn more!

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