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Why Is No Cool Air Coming from My Air Conditioner?

Perhaps the most common emergency service call that HVAC technicians receive during a summer is for an air conditioning system that is only blowing out room-temperature air. This is a malfunction that homeowners notice quickly, and it’s obviously something they will want fixed even quicker.

What causes an air conditioner to lose its ability to cool? There are many possibilities. Here are three of the more common:

ONE – Frozen-over evaporator coil

If you notice that ice is forming on your evaporator coil, call for repairs right away. Otherwise, you will eventually end up with this situation, where a full layer of ice over the coil has completely blocked the coil from absorbing heat. A frozen coil can occur because of loss of refrigerant, excess dirt along the coil, or a clogged air filter. Repair technicians will find the source of the problem, fix it, and defrost the coil.

TWO – Burnt-out compressor motor

If the compressor stops running, the air conditioner will not have any cooling ability and will basically work as nothing more than a large fan blowing around room temperature air. Should the motor that runs the compressor burn-out, the compressor will not be able to do its job. To fix this, technicians will need to replace the motor.

THREE – Thermostat failure

The thermostat uses different wires to turn the fans on and off and also to turn the compressor on and off. If the thermostat loses its connection to the compressor, but still runs the fans, you will have an air conditioner that still blows out air, but doesn’t remove any heat from it. A technician can either repair the thermostat or suggest replacing it with an updated unit.

If you have an air conditioning system that isn’t giving you cooling, call on Red Rock Mechanical right away. We offer air conditioning repair 24 hours a day in Burlington, VT.

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