How To Fix Air Conditioner Not Blowing Cold Air Hvac Training 101 Table of contents. 8 common causes of “air conditioner not blowing cold air”. #1 ac not blowing cold air due to basic electrical issues (blown fuse, tripped breaker) #2 faulty thermostat preventing ac unit from blowing cold air. #3 clogged drain causing water builtup and shutting down compressor. Reason 4. your air filters need to be replaced. if your air conditioner is not blowing cold air but is running, try changing the filter. air filters have a pretty dirty job. they trap dirt, dust, and other airborne particles before they reach your home’s internal airflow.
Air Conditioner Not Blowing Cold Air Or Common Air Cond The first step to take for an air conditioning system not blowing cold air is inspecting whether the thermostat is set correctly. the thermostat is the “brain” of your hvac system and controls when it turns on and off. in the summer, set the thermostat to “cool.”. if it's off, set to “heat,” or on “fan” mode only, switch it back. If your thermostat is set at a higher threshold, it might not actually be turning on. for example, if it’s 24°c, and your air conditioner temperature setting is 28°c. also, another reason why your ac isn’t cooling to set temp is if it’s on the ‘auto’ setting instead of ‘on’. at this point, you’ll have to do a little investigating. There are several reasons an ac unit might not be blowing cold air. common causes include a faulty thermostat, a dirty filter, a malfunctioning condenser or evaporator coil, or a clogged drain. If the switch was accidentally set to “fan,” the unit will blow air through the duct system, but no cooling will take place. easy diy fix: this is the easiest way of fixing an ac system: check.
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