Because you are low on freon.
You will use more gas when your air conditioner is running.
No. Running an air conditioner on fan does not cost as much as running on cool.
No, it's not your fault. It's just running too much. Often this can happen due to the level of refrigerant in the air conditioner being too low, perhaps due to a small leak. The air conditioner should be checked out by a reliable cooling repair person.
Why is there humidity in the room when air conditioner is cooling? Room feels damp.
Depending on the the out side temperature even when the air conditioner sits idle, the refrigerant inside the air conditioner is changing from a liquid to a vapor .
my copper lines freezing on central air unit.
Heatstrips could be on with ac
You will hear air circulating in the cold air return (or return air grille) when the heater or air conditioner is running.
there is a leak in the compressor...
No. The ECM is a computer.
There are quite a few reasons why an air conditioner could be running but not cooling. One should first check the Freon lines and ensure that there is an adequate amount of Freon available.
If your air conditioner is running outside by not blowing cold air inside through your vent, your indoor coil is frozen. You will need to turn everything off and allow the unit to thaw out.