Updated: July 2023

Warm air is probably the last thing that you expect from your AC unit. There are different variables leading your air conditioner to blow warm air. Before you call an AC repair expert, we will run through the most common causes, pointing you in a cool direction.

If you need immediate help, you can give us a call or contact us online.

Let’s Find the Common Causes of Why Your AC Is Blowing Warm Air and How you can Fix Them:

1. Incorrect Thermostat Setting:
It may sound silly, but we have witnessed this happening before. Check your thermostat, and be sure that it is set to “Cool” and not “Heat”. Your fan also needs to be set to “Auto,” and the temperature setting needs to read at least 5 degrees below your room temperature.

2. Restricted Airflow:
A restriction in the airflow to and from your air conditioner may lead to inadequate air coming out of the vents to cool your home. The compressor of the outer unit can also freeze up if there is a lack of enough airflow.

If your air filters haven’t been replaced in a long time, they can affect the airflow. Also, if the coils of the air conditioner are dirty as you haven’t maintained the air conditioner throughout the year, it can generate warm air.

You can troubleshoot the above two reasons at home even without much technical knowledge. But if either of them is not a reason for warm airflow inside your house, you need to hire a professional HVAC expert to inspect and perform AC repair Mesa.

Other causes that need professional and technical knowledge to get resolved are:

3. Low Refrigerant:
If your AC is circulating warm air, a low refrigerant level can be the reason. Losing refrigerant means losing cool air. Leakages can cause a lower refrigerant level. A professional technician can aid your AC repair in Phoenix, by finding and fixing any leakage, before adding more refrigerants.

4. The Outside Unit Is Not Getting Electricity:
When there is any problem with an air conditioner, the homeowners probably check the indoor unit compassionately and completely forget the external unit. This is certainly a mistake as the outdoor unit needs as much attention to stay in a stable and working condition.

If you are getting a warm airflow from your air conditioner, it can be because the circuit breaker has tripped or the fuse of the electrical circuit, which provides electricity to the outer unit, might have blown out.

You need to check the fuse panel and the circuit breaker to ensure that they supply electricity to the outer unit of the air conditioner. You need to call for an immediate AC repair Phoenix if you find either or both the problems.

5. Leaky Air Ducts:
If there are leakages in the air ducts, they can mess with the air coming out of your air conditioner. If your ducts are concealed under the attic, walls, or basement, you need to call A/C Doctors for professional help.

Calling a professional for AC repair in Mesa can save you time while protecting your comfort. If you want your air conditioner not to blow warm air, call A/C Doctors for Gilbert, AZ air conditioner repair.

Frequently Asked Questions

Q. How Do I Know If My AC Needs Freon?
Ans. Freon is a stable and non-flammable compound with low toxicity, used as the refrigerant in your air conditioner. If your air conditioner is running all day without cooling your home adequately, it might be running with an inadequate amount of Freon. If the energy bills are rising high, the vents are blowing warm air, or you are experiencing a hissing or bubbling sound in your refrigerant line –these all signify inadequate refrigerant. You need to ask a professional HVAC expert to check the refrigerant level.

Q. Can An AC Compressor Be Repaired?
Ans. Yes, an AC compressor is repairable to some extent. It is hard for a non-technical homeowner to figure out if the AC compressor can be repaired. Calling a professional HVAC expert to inspect and fix an AC compressor is always recommended.

Q. How Do I Know If My Home AC Compressor Is Bad?
Ans. Your AC compressor is bad:

  • If you are having trouble while turning on the AC compressor
  • If the system is blowing hot or warm air
  • If the outside unit is shaking up while turning on
  • If you can experience strange noises coming out of your air conditioner

Q. How Long Does AC Gas Last?
Ans. If you take proper care of your air conditioner and maintain it regularly, the aircon gas will run up to 20 years. Negligence and poor maintenance of your air conditioner can reduce the lifespan of the AC gas to 5 to 10 years.

Q. Can We Use AC Without Gas?
Ans. If you want a simple one-word answer, then it’s a yes! But you should not use your AC without gas. The system can blow cold air without gas, but when you expect your air conditioner to turn on the heat, it won’t work at all.

Q. What Happens When There Is Less Gas In AC?
Ans. Without an adequate amount of gas, your air conditioner will fail to absorb enough heat from the air. The air blown out through the vents will feel warm. At some point, you may also feel inadequate airflow in your house.

company icon