Before calling us for Service check:
All the switches of your thermostat are in the correct position.
Make sure that your circuit breakers are in the ON position.
Make sure that your filters are clean.
Do not start and stop the unit, the compressor can be damaged.
Check the air access if you have a ground unit.
If you have a Heat Pump:
Don't turn your thermostat off during cold weather.
If you have an electronic thermostat, don't set back the temperature setting during night time hours.
During cold months, even in Arizona, frost and ice may appear on the outside unit. This is normal and in this case the heat pump may go into a defrost cycle. During a defrost cycle, for a few minutes the noise of your heat pump will change and steam can come out. This is normal.
Some cooler air can come for a few minutes during a defrost cycle.
Don't turn your thermostat off during a defrost cycle.
30% of calls are the result of a bad maintenance.