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low on refrigerant or the compressor isn't running..
No. Running an air conditioner on fan does not cost as much as running on cool.
keep it closed the windows .but if need fresh air from outside , open the windows.
Could it be because an air conditioner is not designed to produce heat?
Central Air Conditioners are installed into your house to provide cooling air in every room using a duct system. They are very refreshing on a hot day.
sounds like the blower motor resistor is out on the lower speeds.
sounds like you ac compressor is about to crap out.
Only if it is for covered damage (such as hail, flood, etc.) not for normal "wear and tear."
No. If your referring to the fan on switch on the thermostat. The answer is no only the indoor fan runs if the thermostat is properly wired.
Compressor not running, blown fuse, low of freon.
How is the central heating model not like an electric circuit?
You either have a bad a/c heater controller or a bad or weak a/c heater blend door..........