HVAC systems are placed under great demand during the hot summer months. Unfortunately, this increases the risk of breakdowns and unexpected air conditioning repairs. One of the most common issues homeowners face is having an AC that only blows warm air, which can occur for a variety of reasons. Diagnosing the problem will help determine whether it’s a simple DIY fix or if it requires a trained professional. Here are some factors that could affect your equipment’s cooling ability. 

What Causes Air Conditioners to Blow Warm Air?

1. Refrigerant Leak 

Air conditioners use refrigerant to help remove heat from the air inside a home. The fluid cycles within a closed loop, consistently transitioning from liquid to gas and back to liquid throughout the cooling process. As such, the supply should never be depleted unless there’s a leak in the system.

If this happens and refrigerant levels get too low, the unit won’t be able to create cold air. An HVAC professional will need to identify the source of the leak and perform the appropriate air conditioning repairs. 

2. Clogged Air Filter 

Over time, HVAC filters can become clogged with trapped dirt, dust, and other debris. This will cause restricted airflow. There must be a clear path for cool air to be properly circulated through the vents. When airflow is blocked, it can feel like warm air is entering a living space. 

To eliminate buildup, it’s recommended that filters be replaced every one to three months. Reusable filters should be washed regularly with soap and water.

3. Dirty Evaporator Coils  

An air conditioner’s evaporator coils will also collect grime and debris, limiting their ability to absorb heat and cool the air. As a result, the system’s fan will end up blowing hot air back into the house. Cleaning the coils is an essential part of routine AC maintenance. It’s also important to make sure there’s at least two feet of clearance around the outdoor unit to prevent foliage, soil, and branches from leaving residue on the coils. 

If your AC is failing to distribute cool air, turn to Niceley’s Appliance Repair for help finding a quick resolution. Whether you need replacement HVAC parts or expert air conditioning repairs, they can assist you in restoring your system to peak performance. Serving residents throughout Northern Kentucky for more than 30 years, this family-run business is dedicated to quality workmanship and customer satisfaction. Call (859) 342-9900 to discuss your needs, or visit them online to learn more about their services.