4 Reasons Your Air Conditioner Is Not Blowing Cold Air

30 November 2022
 Categories: , Blog


Air conditioning is essential during summer when the temperatures are high. Despite that, it can be disappointing when you retreat indoors only for the system to blow warm air. Consequently, you may experience discomfort and inconvenience. If a unit has broken down completely and is not blowing cold air, you should hire an AC repair technician. They will diagnose your system and repair it to restore performance. The following are the reasons your AC is not blowing cold air.

Improperly Configured Thermostat

You may notice the AC blowing warm air if you engage the wrong thermostat settings. For instance, if you set the thermostat inappropriately, the blower may continue running, even without cooling cycles. As such, the fan will blow both cool and lukewarm air off and on. On the other hand, a considerable discrepancy between room temperature and thermostat setting may lead to the AC struggling to attain the set temperature. This may result in the system not blowing cold air despite running constantly. 

Clogged Air Filters

An air filter traps dirt, dust, pet dander, and other debris, preventing them from infiltrating the AC. Over time, filters may clog with airborne particulates, and this may restrict airflow to the system. As a result, the AC will strain to draw air that is sufficient for cooling and consume more energy. In addition, diminished airflow means a lower cooling output hence the AC not blowing cold air. Thus, it's crucial to contact an AC professional to clean your filters regularly. If they dispose of the filters, they will replace them with identical ones for proper airflow to the unit.

Faulty Fan Motor

If you notice no cold air from the vents, your fan motor could be the culprit. This may be caused by water dripping into the motor windings, causing the shafts to rust. Additionally, water may bypass the seal and contaminate the bearings and the lubricant. Consequently, the motor may malfunction and fail to torque the rotor to blow cold air. However, poor lubrication may cause the bearings to grind against each other and overheat. This may result in high rotational friction that affects the overall AC performance.

Refrigerant Leak

The AC uses refrigerant to absorb heat from the air handler and dissipate it outdoors. However, if the line set sustains damage from formic acid corrosion, it may leak the refrigerant. Alternatively, the access fittings holding the refrigerant lines in place may loosen due to excessive vibrations and leak the coolant. As a result, the refrigerant will not absorb enough heat, reducing the cooling output.

An AC that is not blowing cold air causes inconveniences and high energy bills. Therefore, you need an AC repair contractor to inspect and repair your system for restored performance.

For more information, contact a local company, like Ecology Air Innovations.