What do you do if your home air conditioner is icing up?

Answer 1

Dirty filter or evaporator coil, blower speed set too low, obstruction in supply or return duct, system is oversized or mismatched and there is no way you can tell if the unit is low on refrigerant or not until you solve the icing problem.

Answer 2

Typically in my experience as a handy employee and homeowner for the last 40+ years, when a refrigeration unit ices up it is because the thing is working too hard and/or the coils and radiator is full of dust/debris.

*Assure that the delivery lines are well insulated so the cold freon is still cold when it gets to the exchanger in the ducting part of your heating system. *Insulate the house and preserve your cool air as much as possible, keeping in mind that it is dollar bills blowing out the doors, windows and cracks.

*The unit must be 3+ feet clear of weeds, junk, sheds, tools, toys, etc. to allow it to breath, and keep it spiffy clean and try to cover it in winter.

*There usually is a fuse box outside near the unit that should be flipped at the end of season to eliminate it from accidentally being turned on in cold weather, which is supposedly very bad. Just do the cover when you do the fuse flip.

*Finally if this continues, the thing need a real pro to check it out. If it needs a recharge, it has a leak. This can be bad and if it is older, it may be wiser to get a new or newer used model to gain reliability and efficiency.

Answer 3

Defrost it, remove any food, the switch off the freezer, leave the door open and alow all the frost/ice to melt, then clean the freezer and switch on again. If the freezer regularly frosts up then you may have a faulty door seal.

Answer 4

The unit is most likely low on freon and needs to be recharged, or there is not enough airflow through the unit.

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Or you are asking the unit to do more than it was designed to do, next time try lowering the temperature slowly. If your home has been closed up for a long period then there is probably an excess of humidity and the unit is trying to dehydrate the air beyond what it is capable of doing. Try incremental cooling... lower the room by two degrees at a time and allow the unit to cycle off and on. The continual use of the unit is what is making the ice build up.

Answer 5

If by aluminum radiator core you are talking about the indoor coil, you may be low on refrigerant, have a dirty filter, or the indoor blower is not working properly.

Answer 6

Click on the link to your right for the answer.

Answer 7

You're not getting enough air across the evaporation coil. You'll need to either install a larger fan or replace your filter.

Answer 8

air conditioner condenser coil icing up