19 Homeowner Guides
Make Sense Of Your Cooling.
Symptoms, components, and the clues behind cooling problems.
Cooling Problems
A Running Air Conditioner Fan Does Not Prove CoolingSetpoint Is the Main Test for a Continuously Running ACA Broken Air Conditioner Calls for Safety Checks FirstNon-Running Outside AC Units Need Different ChecksWhat to Do When Your Air Conditioner Makes a Loud NoiseAir Conditioner Blower Fan Problems Go Beyond the MotorSigns Your AC Needs Service, From Routine to UrgentFix Heating and Air Conditioning by SymptomGas Wall Furnace: Types, Safe Checks and Service Clues
Breakers, Odors & Alarms
Coils, Compressors & Refrigerant
Condenser Coil vs. Evaporator Coil: Function and Location6 Safe Checks Before Central Air Compressor RepairWhich Compressor Suction & Discharge Velocity Limits Apply?How to Calculate Subcooling From PressureWhat Is the Outside Unit of an Air Conditioner Called?AC Unit Contactor: Symptoms, Safe Checks and Repair