Nothing is quite as frustrating as an air conditioner that’s doing the opposite of what it’s supposed to do. When your cooling system is blowing warm air, the cause is generally due to one of these five things.
Incorrect Thermostat Setting
Many of us now have programmable or smart thermostats that allow us to set it and forget it, but it’s still worth investigating to see if your settings are out of whack. Make sure the thermostat is set to cool, the fan is switched to auto and the temperature is somewhere between 68 and 72 degrees. We’ve responded to more than one call where a panicked homeowner was convinced the HVAC system was on the fritz when the thermostat simply needed adjusting. It happens.
Your Filter is Filthy
When is the last time you changed your air filter? An air filter has an important role to play. It captures dirt and debris that would otherwise circulate through your home. But a clogged filter obstructs air flow. We recommend changing your filter every 60 to 90 days, 30 if you have pets.
Leaky Air Ducts
Your air ducts should deliver cool air to every corner of your home, but if they aren’t properly sealed, conditioned air escapes before it reaches the vents. Your home won’t cool properly, plus your electricity bills will be through the roof! A professional HVAC technician can locate and fix the leaks.
Condenser Unit is Dirty
The condenser is the big box unit outside your home. This is the part of your central air conditioning system that expels your home’s warm inside air to the outside. The unit can’t do its job when clogged with leaves and debris. This is a simple fix: Gently hose off any obstructions and trim back any bushes or shrubs crowding it. Condensers need breathing room.
It’s Leaking Refrigerant
The misconception about refrigerant is that it needs to be recharged on occasion. Actually, an air conditioner is a closed-loop system. It won’t burn through coolant. A leak is the only reason an air conditioner would be low on refrigerant. A professional HVAC technician can find and fix the leak and recharge the unit.
Bottom line: These are the most common causes your AC is blowing warm air. Some of these problems you can fix yourself, others will require professional expertise. To schedule an appointment with Complete Comfort Heating & Air, call 317-671-7552.