Clogged air filter coils or obstruction in front of return.
Outside central air unit frozen.
If your outdoor unit is frozen and you can t remember the last time you changed your air filter you might have identified your problem.
The flow of air around the air conditioning unit is important for its normal functioning.
Clean the inside unit using a lower pressure air line or a vacuum cleaner.
Be careful to not bend the fins.
Causes for central air conditioner freezing up.
If the unit fails to shut off when temperatures in the living area hit the thermostat setting the cause might be a failed electrical contactor in the outside portion of the central air unit.
Warm air blows over the evaporator coil refrigerant removes the heat from the air and then cold air is pushed back in your home.
It s getting hotter outside in the atlanta area but your central air conditioner is covered in a thick sheet of ice.
However this is a common problem homeowners have with their air conditioner during the cooling season.
The evaporator coil is the part of your ac system that cools the warm air taken from inside your home.
It is important to address this issue a frozen air conditioner will not only cool.
Dirty air filters can cause this problem.
Airflow brings warm and moist air to the ac which is then conditioned.
Chances are your indoor unit s evaporator coil is frozen solid and cold liquid refrigerant is flowing to the outside unit through the refrigerant line which is why it s covered in ice.
These are thin strips of metal that are easily bent.
So what s the deal.
If the ac is not getting enough airflow it will cause the unit to over cool and lead to the freeze up problem.
Trim grass and remove debris from around the unit.
The first step in repairing your air conditioning unit and preventing freezing is to inspect the cold air line for any tears or damage to the insulation.
The dirtier an air filter gets the more it can restrict airflow through your system.
If you change or clean your filter per the manufacturer s instructions you ll be.
Your outside air conditioning refrigerant line is covered in ice which seems crazy in arizona heat.
The cooling line for your air conditioner will run directly from the ac unit outside to the furnace fan and will usually be covered in black insulation.
There are a number of reasons for an air conditioner to freeze up and it really doesn t matter whether it is a window ac unit or a central air conditioner the causes of and solutions to an air conditioner that keeps freezing up are exactly the same.
With the power to the unit off use a medium pressure hose to wash dirt from the fins in the outside unit.
An evaporator coil in a central ac unit.
