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6 Reasons Your AC is Blowing Warm Air

Posted: 2019-08-01

During a hot summer day, your air conditioner plays an important part in keeping you and your family comfortable. But every AC can act up sometimes — instead of distributing cool air, warm air is being blown.

Four Seasons Air Specialists is your leading HVAC company in Grant MN that offers top-notch AC repair services. This article talks about the root causes of an AC blowing warm air.

Choked Filters

Your AC’s filter cleans the air that goes into the air conditioner and the cooled air that circulates throughout the house. If it’s clogged, the airflow is diminished, making the air conditioner unable to properly cool your home.

There are newer AC models that automatically shut down before too much dirt is gathered, telling you to check the filters. However, older units will keep on working - but with poor performance and lower efficiency. Not only does this make you feel warm, but it also causes your electric bills to go up unnecessarily.

Replacing or cleaning air conditioner filters every 30 to 60 days is highly recommended, depending on the amount of dirt it collected. Properly maintaining your filter directly affects the overall performance of your air conditioner.

Thermostat Issues

When the thermostat is having problems, your AC never reaches the temperature you initially set. A buildup of grime can cause discrepancies between the actual room temperature and the outside temperature. In this case, you need to clean the thermostat. Using canned compressed air or a soft brush, clean the mechanical and electrical components of your thermostat. Once it’s clean, inspect the parts and look for obvious damage like loose wiring or screws. If there are any signs of corrosion on the wiring, you can use the wiring diagram in your owner’s manual as a replacement guide, or just replace the thermostat altogether.

In addition, of the thermostat is placed in a bad location such as close to heat sources, exposed to direct sunlight, or in an isolated spot that’s away from the living areas. If that’s the case, try relocating the thermostat.

Leaking Refrigerant

The air conditioner’s refrigerant is responsible for absorbing heat from inside your home and transferring it outside. If your system has an inadequate level of refrigerant, it will take much longer for your home to cool down since there is not enough refrigerant to take away the heat.

It is difficult to detect an air conditioner leaking refrigerant. For your safety, have a qualified technician inspect your system, locate the leaks, seal them off, and recharge your AC with the right amount of refrigerant.

Electrical Issues

When the outside unit loses power, the air conditioner will have problems within the vents. You should check the circuit breaker, fuses, and switches. Simple issues like a tripped breaker can cause great discomfort, especially by shutting your AC down. The best thing to do is to check the circuit breaker and emergency shutoff switch. However, if you keep on having this issue, there could be a more serious electrical problem. For your safety, be sure to call a professional as soon as possible.

Closed or Blocked Return Vents

Sometimes, vent grills were closed over the winter and were never opened. This is a common issue in most homes having air conditioners blowing hot air. So, open those vents and make sure there are no fixtures or other obstructions blocking them. Then, check all registers and return vents and open them to allow the air to move freely.

Filthy Condenser Coils

The condenser is responsible for releasing heat to the outside of your home. The condenser coils make that job possible. Since these components are exposed to the elements, condenser coils can be filled with dirt and grime, including leaves and trash. Over time, these obstructions impede the operation of the coils, causing your air conditioner to blow warm air.

Call the Cooling Experts

If your air conditioner gives you a headache instead of comfort, call Four Seasons Air Specialists. We have teams of professional AC technicians that are trained and certified to deal with any air conditioner problems. We can restore the comfort in your home in no time. As your trusted Mahtomedi AC repair company, we aim to provide you with unparalleled service and workmanship.