Why Your AC Is Blowing Warm Air and How to Fix It

Dirty or Clogged Air Filter

Over time, air filters accumulate dirt, dust, and other debris that restrict smooth air flow. This is a common reason for an air conditioner malfunction and not cooling indoor spaces. When your unit’s air filter clogs, it strains the entire system and causes the evaporation coil to freeze. If left unchecked, the coils can freeze completely and restrict the cooling process. You can get ahead of such scenarios by replacing the air filter every 1-3 months, especially in summer when you need it most.

Low Refrigerant Levels

Refrigerant levels determine your system’s cooling capabilities. Low levels prevent your system from absorbing heat indoors, causing discomfort and frustration. While aging can cause low refrigerant levels, leaks are also the reason for rising indoor temperatures. Whether it is aging or leaking, call a professional HVAC company to assess the extent of the damage and determine the best course of action. In most cases, AC repair is not feasible for long-term performance, prompting a full replacement.

Frozen Evaporator Coils

Evaporator coils are vital components designed to absorb heat in your living spaces, causing your AC to blow cool air. If coils freeze during the cooling season, the absorption process stops, and warm air fills all enclosed spaces. Frozen coils are often a warning sign of a more serious problem, such as low refrigerant levels or poor airflow. If you suspect your coils are frozen, turn off your air conditioning unit and call a local HVAC service provider for an accurate diagnosis and long-lasting solutions.

Thermostat Problems

Sometimes, the problem is just an incorrect thermostat setting. Adjust the reading to your desired temperature and let the AC do its work. In the case of a stuck reading or a frozen screen, swap out the batteries with new ones to restore functionality. These tips can help in most situations, but recurring problems may need an upgrade. Consult a reputable HVAC service team for advice when choosing smart thermostats, ensuring you make a wise investment in your home’s indoor comfort.

Compressor Issues

A failing or damaged compressor cannot effectively circulate refrigerant, restricting the heat removal process and causing warm air to wreak havoc. A functioning compressor acts as the heart of your air conditioner. If it malfunctions due to mechanical or electrical issues, your unit can run continuously without cooling your living spaces. Compressor issues are usually complex and require extensive expertise to diagnose and repair. Reach out to an HVAC company quickly to inspect the AC and recommend whether AC repair or replacement is necessary.

Schedule an appointment with the experts at Aire Serv to maintain your air conditioning unit in good working order year-round. Don’t wait until small issues escalate into bigger, more expensive problems. Contact us today to request an estimate.