Be sure the thermostat is switched to Cool , the Fan is switched to Auto, and adjusted low enough to be turning on. Be sure the filter is clean.

Air Conditioning is a very complex system with many parts and variables which can go wrong. It would be impossible for me to explain in any kind of detail or even touch in many areas of trouble shooting. This is best left to an experienced Technician. I am only offering easily accessible suggestions which may save you a service call.

Below are a few items to check if your system is not cooling. In most cases your Service
Company will need to be called, but lets check the obvious first.

If the filter is clean and everything is running, you may be low on refrigerant.   A quick way
to check this is feel the larger of the 2 pipes going into the condenser.  It should be cold.  If
it is not, chances are you are low and will need service.  Are all of your vents open?

Dirty evaporator coils can act like a dirty filter.  This will be a gradual change over time.  Indications are 'not cooling as well as it did last year', freezing up and higher electric bills.

If the unit is not Running, click here. If the unit is Freezing, click here. If after checking everything I have outlined and your unit is still not cooling, call your Service Company.

Help when you need it...click here for info.