i have central air in my home and it keeps icing over, what could be the cause?

Question

i have changed filter,it stays cold for about 2hrs then freezes up,any suggestions?

Answer 1

may need coils inside cleaned
also have freon level checked in the system
-as low gas level will cause it to ice -

also check that the drain is open and free running

Answer 2

This is a complex question. Several possibilities include, too small a circulating fan so too low a flow over the evaporator, too large a compressor for the size of the house, some extraordinary source of humidity within the house and restricted air flow through the duct system. I would consult a reliable A/C contractor familiar with your area and brand of equipment, he should be able to find the problem and a cure for not a great deal of money.

Answer 3

30 years in the ac business...and my guess is it's a little low on freon. could be several other things like dirty coils and such, but almost always it's low on freon. But it's a good time to have the unit cleaned and serviced. Use a reputable dealer and watch to make sure he cleans the air handler well. Money well spent.

Answer 4

Either you're not getting enough air through the A coil or you're low on freon.

Answer 5

you should also have your fan checked. it may not be spinning fast enough or at all to take the cold air into your house causing the air conditioner to freeze up

Answer 6

drain is pluged for the water run off. water or condensation is getting in the coils. run a long hanger in the drain. or your filter is plugged. and its not getting enough air across the coils.

Answer 7

need to have a good cleaining of the unit