Serving Albany, Schenectady, & Troy Since 1939

Why Is My AC Blowing Hot Air?

Summer heatwaves are made bearable by functioning air conditioning systems. If your AC starts blowing hot air on a hot day, you need to know what is going on. Since 1939, the experts at Crisafulli Bros. Plumbing & Heating Contractors, Inc. have provided top-tier air conditioning services to residents and business owners alike. We have encountered tons of broken ACs and guarantee that we can quickly discover exactly why your system is blowing hot air. Below are some of the most common causes of this irritating problem.

The Thermostat Is Set Incorrectly

Calls to homes with incorrectly set thermostats are rather common. Luckily, this problem is the easiest to fix. First, as silly as this sounds, make sure your thermostat isn’t actually set to “heat.” Then, make sure that your fan is set to “auto” rather than “on.” When your fan is set to “on,” it will kick on once the outside AC unit shuts off and begin blowing warm air into your home.

There Is a Restriction in Airflow

When the airflow in your AC is restricted, your home will not receive all of the cool air necessary to keep it comfortable.

Restrictions in airflow can be caused by:

  • A clogged, dirty filter: Your AC filter needs to be replaced every 1-3 months, depending on how often you use your AC. A clogged filter will restrict airflow into your home.
  • Any debris blocking the outside unit: If toys, tools, and plant debris are blocking your outdoor AC unit, it will struggle to draw in fresh air.
  • Damaged ductwork: Broken ductwork will leak your cooled air before it has a chance to make it through your vents, effectively limiting the amount of cool air flowing throughout your home.

The Refrigerant Is Leaking

Low refrigerant is another common reason for an AC blowing hot air. Because refrigerant is what cools your air, low levels of refrigerant result in an insufficient amount of cool air being distributed throughout your home.

Refrigerant levels should remain constant throughout the life of your AC. That means that if your refrigerant levels are low, there is a leak. Refrigerant leaks can be very dangerous, so it is best to contact an AC professional right away if you notice your levels have dropped.

The Outside Unit Isn’t Getting Electricity

The indoor AC unit is responsible for moving cooled air throughout your home. If the outside unit doesn’t have electricity, however, the inside unit will distribute warm air. It is possible that the circuit breaker tripped or the fuse has blown on the electrical circuit that distributes electricity to your outdoor air conditioning unit. Be sure to check your circuit breaker and fuse panel to see if that is the case.

The Compressor Is Broken

Your compressor circulates refrigerant, which cools your air. If the compressor is broken, it fails to circulate the refrigerant and deliver cool air into your home. This results in your inside unit AC blowing warm air throughout your home.

How Crisafulli Bros. Plumbing & Heating Contractors, Inc. Can Help

When your AC is down, Crisafulli Bros. Plumbing & Heating Contractors, Inc. is here to help. No matter the cause of your problem, you can trust that we will offer red carpet service and solutions. Backed by over 80 years of service, our team has the advanced tools, state-of-the-art equipment, and reliable expertise necessary to get the job done right the first time. We will carefully evaluate your AC, determine exactly what is causing it to blow hot air, and offer fast, effective repair.

Turn to the most trusted and recognized team around. Call Crisafulli Bros. at (518) 868-0494 to schedule AC repair. We look forward to serving you!