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The operation of an air conditioner is to cool the air in a room adequately. However, sometimes even when the thermostat is set correctly, it blows warm air, and regardless of how long the air conditioner is running, the rooms remain stuffy and damp.

An AC blowing warm air indicates that something is wrong with your unit’s cooling system. You may hire an air conditioning specialist to check and repair the issue. However, there are some things you can check to save time, energy, and money.

Quick AC fixes

  1. Clogged or too restrictive filter

While a clogged air filter may not directly cause heated air to blow, it will add to the issue and diminish your air conditioner’s capacity to produce cold air over time. Certain thicker, higher MERV rated, filters may also be problematic because, although they are intended to keep tiny impurities out of your house, they can also obstruct airflow. Replace or clean the air filter regularly – every 1-3 months, depending on how quickly they accumulate dirt.

  1. Clogged Evaporator or condensing coil 

Dirt and debris may obstruct the functioning of your air conditioner, resulting in the AC blowing warm air. Cleaning the unit thoroughly and leaving at least a foot of free space around it is critical. Maintain a trim around vegetation and overhanging trees to prevent leaves from entering the unit.

  1. Tripped Breaker 

Without electricity, the outside unit will be unable to cool or chill the air moving through your house. If the breaker is the source of the issue, it’s very easy to determine. Verify that the circuit breaker or fuse panel is providing power to the item.

If the circuit breaker or fuse has been tripped or blown, you should contact a professional immediately.

  1. Disabled Thermostat Settings

Your thermostat’s settings may have been altered accidentally, or you may have forgotten to shift from “warm” to “cool.” Ascertain that the thermostat is set to the proper temperature and auto mode, not on. When the air conditioner is set to “on,” it keeps circulating air even when it’s not cooling.

Other reasons why your air conditioner is blowing hot air

Refrigerant Leak

The refrigerant is the substance that circulates throughout the system to cool the air. If coolant levels fall due to a leak, the air conditioner will lose its cooling power and only blow warm air. If this occurs, contact a technician to check for a refrigerant leak. It will need to be shut down and refill the coolant.

Leaking Ducts

Airflow issues may also occur as a result of faulty ducts. If tiny leaks occur in the ductwork of your HVAC system, all conditioned air is lost to the environment, and no cool air reaches the room’s air vents. As a result, you will either get warm air or none at all. It’s a significant energy waste and will increase your utility bills as the AC attempts to compensate for the loss. If your ducts are easily accessible, you can inspect them yourself, but it’s best to leave the inspection, cleaning, and repair to a technician.

Dirty Air Filters

Clogged or dirty air filters restrict airflow, causing the system to work harder and potentially blow warm air. Regularly replacing or cleaning filters can help maintain proper airflow.

Thermostat Issues

The thermostat could be set incorrectly or malfunctioning. Ensure it’s set to “cool” mode and the temperature is set lower than the current room temperature.

Electrical Issues

Problems with electrical components such as capacitors, fuses, or wiring can disrupt the AC’s functionality. An HVAC technician can diagnose and repair these issues.

Compressor Problems

The compressor is responsible for circulating refrigerant through the system. If it’s malfunctioning, the AC won’t cool properly. This usually requires professional repair or replacement.

Ductwork Issues

Leaks or blockages in the ductwork can prevent cool air from reaching your living spaces, causing warm air to circulate instead.

Importance of AC Maintenance

Regular air conditioner maintenance is essential for maintaining optimal efficiency, prolonging the unit’s lifespan, and ensuring consistent indoor comfort. By keeping filters, coils, and other components clean and functional, maintenance reduces energy consumption, leading to lower utility bills and a smaller carbon footprint. It also helps prevent unexpected breakdowns by identifying and addressing minor issues before they escalate into costly repairs. Additionally, regular maintenance enhances indoor air quality by removing dust, allergens, and other pollutants, contributing to a healthier living environment. Adhering to a maintenance schedule can also keep warranties valid, protecting you from potential repair costs. Overall, investing in routine AC maintenance ensures reliable performance, cost savings, and a comfortable, healthy home.

AC Repair Southwest Ohio/NKY

If you are in southwest Ohio and your AC is blowing hot air and you’re in need of repair, give Quality Comfort Home Services a call at 513-620-4822 or book service online 24/7.