Skip to main content

Why Is My Air Conditioner Blowing Hot Air?

One of the worst things that can happen on a hot summer day is that you escape to the comfort of your home only to realize that your air conditioner isn’t cooling your home. When an air conditioner is blowing hot air, there can be several causes for the system’s failure. Some of them include the following:

  • Incorrectly Set or Broken Thermostat
  • Dirty Air Filter
  • Dirty or Frozen Evaporator Coil
  • Refrigerant Leaks
  • Loss of Power
  • Damaged Ducts
  • Failed Compressors

Incorrect Thermostat Settings

The thermostat is one of the first things to look at when your AC is blowing warm air. The best-case scenario is that you accidentally had the wrong thermostat settings. If it’s set to heat or auto, simply setting it to cool will solve the problem. However, in some instances, the thermostat may have malfunctioned, which is preventing the right signals from reaching your air conditioning unit. If that’s the case, the thermostat may need to be replaced.

Dirty Air Filter

A dirty air filter can also be the cause of an air conditioner blowing hot air. Air filters prevent dust and debris from entering the air conditioning unit. When an air filter becomes too clogged, it can prevent enough air from entering the system. When evaporator coils don’t receive enough air, they can freeze, causing the system to stop blowing cold air. An air filter should be changed every 1 to 3 months or as recommended by the manufacturer of your HVAC system.

Dirty or Frozen Evaporator Coils

Dirty evaporator coils can also be why an air conditioner is blowing hot air. Evaporator coils absorb heat from the air so the air conditioner can blow colder air into the home. However, dust and debris collecting on the evaporator coils will reduce the air conditioner’s efficiency in cooling air and can lead to frozen evaporator coils. Evaporator coils can be easily damaged if not handled carefully, so homeowners should not try to clean AC unit evaporator coils themselves. This type of maintenance is best performed by a licensed technician with the proper HVAC training and tools. Scheduling regular maintenance appointments to have your air conditioning system serviced will give technicians an opportunity to spot evaporator coil issues before they become a problem and perform any cleaning that might be necessary to keep your AC unit blowing cool air.

A Refrigerant Leak

Air conditioners use refrigerants to cool the air sent into your home. When those refrigerants are low, that could indicate your air conditioner has a refrigerant leak. While a refrigerant leak won’t keep your AC unit from running, it will only blow warm air as it tries in vain to reach the temperature set on your thermostat. If you suspect a refrigerant leak, it’s essential to have your air conditioner checked and schedule an AC repair right away. Not only do you want to have any leaks repaired to get your air conditioner blowing cold air again, but you also want to avoid any potential damage caused by the refrigerant leaking from your unit. An outdoor refrigerant leak isn’t likely to present a hazard to people, but it can harm plants and animals.

Loss of Power

Your home’s electrical supply powers outdoor units. Anything that interferes with that supply of electricity reaching your air conditioner can cause a power failure that will keep your AC unit from blowing any air. A wide range of issues can be the cause, from a tripped circuit breaker to a blown fuse or other wiring issues. It can be difficult for homeowners to narrow down the cause of a loss of power to their air conditioner. Electrical systems can be very complex and challenging to troubleshoot, but Gore Heating & Air can inspect the system to determine the cause of the failure and have any required AC repair performed by a trained technician.

Damaged Ductwork

Another reason your air conditioner might be blowing hot air is the ductwork. If ductwork isn’t installed correctly or is deteriorating from wear and tear, the airflow from your air conditioner can be impeded. In addition, parts of the ductwork may have gaps or holes that allow your cold air to escape into parts of your home where it’s not needed, like attics, basements, or between floors. Gore Heating & Air specializes in ductwork repair. If your ductwork isn’t delivering cold air throughout your home, we can determine why and make necessary repairs.

A Broken Compressor

An air conditioner’s compressor compresses the refrigerant gas and pumps it through the AC system’s condenser coils to remove heat from the indoor air. If the compressor is broken or not functioning properly, the refrigerant gas cannot be compressed and circulated through the system. A broken compressor can very likely be the reason the AC is blowing hot air. Read our reviews and consider working with us!

Contact Us for Any AC Repair

No matter what is causing your air conditioner to blow hot air, Gore Heating & Air, specialists in air conditioning installation in Hope Mills, NC, ductless mini splits in Fayetteville, NC, and a variety of other services in the surrounding areas, can solve the problem. We can evaluate your air conditioning system and isolate any areas preventing your system from successfully producing cool air. Additionally, we can handle any AC repair, whether the problem is a minor issue requiring simple maintenance, like replacing a dirty air filter, or a major failure requiring a complete HVAC system installed. Follow our blog for more tips and resources for residents and commercial business owners.

We aim to get your system running again as quickly as possible at an affordable price and with the utmost professionalism and customer support. Contact us today for fast, reliable, and friendly service!

About The Author

Gore Heating & Cooling

When it comes to local HVAC services in Fayetteville, NC, know that whatever you request from us, you will be perfectly satisfied with our comprehensive and reliable solutions.

Request Service

Contact Form (Service Page)

"*" indicates required fields

This field is for validation purposes and should be left unchanged.
Bill H.
My heat pump went out Sunday Night during this current heat wave. Monday morning, I called Gore Heating and Air and told them my problem. They told me that they would send someone out that afternoon. The Owner, Nicholas Gore came out after 5 PM. Gore Heating and Air had installed my current heat pump 22 yrs ago. Nicholas was honest and told me that he could fix it, but couldn't guarantee how long it would last because it is 22 yrs old. I am going to have a new heat pump installed on Friday. Gore Heating and Air has great customer service and is honest and dependable. Thank you Nicholas for the great service.Update: This morning l, Sean & Jalil came out and installed our new heat pump. They were very professional and did an excellent job. Now our whole house is cool again. For the past week, we had been surviving on 2 window units. Thank you Sean & Jalil for the Great Job!!! Thank you Gore Heating & Air for the excellent service. I have been a long time customer of theirs for many years and will highly recommend them to anybody.
Alyssa H.
We had an excellent experience with Gore Heating & A/C! The service was quick, friendly, and efficient from start to finish. The technicians were incredibly nice, smart, and attentive, ensuring that every detail was taken care of. They even left our space cleaner than they found it, which was a pleasant surprise. On top of all this, their prices were very reasonable. Highly recommend!
Samuel C.
Excellent service
Justina D
Gore’s Heating and Air is a very professional business and dedicated to servicing the customer the best way possible. They diagnosed the problem quickly and fixed it as quickly as possible. We will definitely call them anytime we need our system worked on.
Connor G.
Had our Motor go out on our outside unit and they were here in less than 30 minutes from the time I got off the phone with them and only took another 30 minutes or so to get the new part installed and everything working!
Tad P.
I was very happy with the knowledge and professionalism.
Betsy F.
Nicholas was very professional & well spoken young man. He explained how the coils are leaking & what the options are to fix it. He explained that he added 3 lbs of coolant to help it work better, while we wait for new coils. We decided to replace the coil system. We appreciate Nicholas & Gore Heating & Air Conditioning. They responded very quickly to our AC issue.We highly recommend Nichlolas & Gore.
natalie S.
Josh was the best! Came out the site and completely saved our week! He was able to identify the problem with our unit and fix it within 20 minutes. Super nice and explained everything to me (who knows nothing about AC units or anything electrical). 10/10 experience. lifetime customer
paul T.
Josh was very professional and polite, he called me prior to his arrival to be sure it was a good time. Once here he was very respectful and explained exactly what he was going to be doing. I would definitely recommend Gore Heating &A/C for all your heating and air needs.
Rodney G.
I just had a technician perform a service check and it was pleasure. Punctual, prompt and friendly is what i look for. His work was thorough and straight forward. Price was less than $100. Gave me a sense of peace heading into a hot summer - thanks Gore
chris S.
Had Gore come out for an estimate. Absolutely professional and detailed with many great options. Punctual and polite. Highly recommend them at this point. Rates are comparable and fair.Just had them complete the install. You couldn't even tell they had been here aside from the new unit. Very professional and courteous. Kept me informed throughout the install. Works beautifully.Just had the yearly service done on both my units as one hasn’t been done in a while. Great service with that as well.Highly recommend them. Thanks Gore Team.
Adam K.
Great guy came and gave us a quote. Very respectful
Basil L.
They came out very fast. The technician was very professional and explained every option very well
Kyle E.
Extremely knowledgeable technician and great customer service! Not sure what more you could ask for from an HVAC company.
David S.
Thanks for saving the day
Reginald J.
Gore initially installed my unit over 10 years ago. I called them back for service and they took care of the problem. I'm satisfied with quality and speed of service.
Chad H.
Great experience from the install to unit start up. Arrived in the morning and completed by before 5:00. If you want a good quality experience give Gore Heating and Air a call.
Savannah M.
Knowledgeable and experienced, would recommend.
Michael M.
Quick, knowledgeable, friendly, clean.
Ross S.
Always satisfied with Gore's service. When they've installed new equipment they go beyond minimums. There's an extra margin built in.
Adam B.
Great service. They truly look after the customers.
Sharon W.
He check my client's fireplace for vents and made quickly repaired the problem. Very friendly and efficient.
Margaret L.
Both the office staff and our technician were professional, helpful and easy to deal with.
Michele D.
Fantastic experience.
Alan H.
Gore HVAC is a family business they give good service. I would recommend their service to everyone
Jenny E.
Josh from Gore Heating & Air did a preventive maintenance check on my HVAC units. He found (and fixed) a minor problem that could have become much bigger if the fix was not done. He was also pleasant and friendly, and he explained everything he was doing. He was even nice to my very excitable Jack Russell terrier!
Ruth P.
Excellent work and I appreciated it
Ariana P.
Such a great experience! I was walked through what was being done and they fixed my AC quickly and the same day I called! Thank you so much for savin me from this heat!
He could not resolve my issue, but he was a good guy.
Brenda F.
Ethan came and did what was needed to do for our spring maintenance schedule. We appreciate all Gore does to keep us seasonally comfortable.
Patsy M.
Great experience! Josh is a very courteous and knowledgeable technician.
Brent S.
Great company, great service and great people. Would 100% reccomend for anyone needing heating and/or A/C work done.
Patty R.
Had our wood fireplace replaced with a gas insert! Looks beautiful and the Gore team was very professional, helpful and pleasant to work with. Great job we are very happy!
Phillip W.
Made an appointment over a week in advance. Day of appointment there was sufficient notification of scheduled appointment along with a 30 minute call out. Technicians were professional, efficient and knowledgeable. Was informed and technician explained all steps in repair process. Very satisfied…will be a repeat customer
Carol M.
Nick was on time and worked efficiently. Took time to go over services completed. Suggested replacing water heater and gave pricing. We questioned him about payment plans and he was able to speak about them. Everyone that we have interacted with at GORE has been extremely friendly and courteous.
Timothy G.
Quick and easy process.
Frantz A.
Nicholas was very helpful about giving me all the informations that I needed. He was very instrumental on answering all my questions. He is a down to earth person.
Edwin B.
Great experience with Nick and Gore Heatong and Air known the family and company great experience

Schedule Service

"*" indicates required fields

This field is for validation purposes and should be left unchanged.