One of the main issues that homeowners face with their central air conditioners is a failure to deliver cool air. It’s obviously a major failing if a device can’t perform the main function it’s designed to do. If your A/C is blowing hot air, or more accurately, air that’s just not cool, you’ll want to address that problem immediately, either through your own troubleshooting or by calling in a trusted professional. Here are some common reasons for a central A/C failing to blow cool air.
Why Is Warm Air Blowing Out of the A/C Vents?
Is the air conditioner set to “cool”? Someone may have inadvertently set the thermostat to heating rather than cooling. Similarly, if the thermostat fan setting is set to “on” or “fan only” rather than “auto,” the fan will continue blowing whether the A/C is running or not.
Check the outside condenser/compressor component outside. If it’s been switched off, the inside air handler or blower might keep operating without delivering cool air. Make sure there’s nothing blocking airflow to the outside unit, such as brush or yard debris. If the condensing coil is excessively dirty, its ability to release heat energy into the atmosphere will be compromised. You can try to clean the coil yourself, but you’re better off leaving this task to an HVAC professional.
Check the air filter. If the filter is clogged with dust and debris, airflow into the air conditioner will be impeded, and dust and other contaminants may end up covering the evaporator coil. These results will have negative impacts on the whole cooling system.
Inadequate refrigerant may be why your A/C isn’t blowing cool air. This isn’t something that you can diagnose or address yourself, but could be why your air conditioner isn’t cooling.
An annual A/C tune-up will go a long way toward avoiding a cooling system that delivers warm air. Similarly, if your A/C is blowing hot air and you can’t fix the problem, contact the cooling experts at Arpi’s Industries Ltd. We provide quality services throughout the greater Calgary area.
Our goal is to help educate our customers in Calgary, Alberta about energy and home comfort issues (specific to HVAC systems). For more information, download our free Home Comfort Resource guide.
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