no cold air in the house!?

Question

came home from work last night. it was hot in the house. blower was on, thermostat works, no blown fuse, switched off and on the breakers, no clogged air filter..replaced anyways..compressor tries to turn on...but doens't.

Am i just low or out of freon?!

Answer 1

If the compressor attempts to start but just hums, the starting capacitor is likely defective.

Capacitors are not all that expensive. this is the least cost way to check your compressor.

Turn off the power at the circuit breaker and remove the capacitor. Mark the wires if there is more than 2.

Take the capacitor to a heating supply and purchase a new one.

Replace and turn on the circuit breaker.

If the compressor runs, you have fixed the problem.

If the compressor still just hums, it could be the compressor relay or the compressor.

Have a reputable, qualified HVAC service technician repair it.

Good Luck.

Answer 2

Not enough information. Does the outside fan come on? If the fan is running and the compressor will not, it might be a capacitor or a compressor problem. If they both try to start and they both shut off, then it might be a head pressure problem or a low pressure cut out. If it's a low pressure problem then yes it's probably loe on refrigerant.

Answer 3

If the compressor tries to come on(humms) but doesn't you have either a def start capacitor,start relay,or compressor(how old is compressor?) If compressor is 15+ years old it is suspect.If less than 10 yr old might be covered under extended warenty. If 5 or less should be covered under warenty.Call an air conditioning repairman

Answer 4

Most likely out of freon. Call the mfg 800 # and explain the problem they will give suggestions.

Answer 5

the capacitor will be my first suspect
check out this leaky swollen capacitor: