(5) "Warm Rooms" on the lower levels of the house where it is cooler cut back or cut off some vent registers (Diffuser) and make sure that all the ones on the upper floors where it is warmer are open all the way! Also, see paragraphs #2 & #9.
(6) "Doors" if you close the door to a room make sure that there is about a 3/4" gap between the bottom of the door and the floor. You may have had carpet put down on the floor and now there is no gap. This is necessary if you have a central return air duct in the hallway. The return air ducts need to pull the warm air from the room.
(7) Never leave the house and turn OFF the A/C. then come back home and turn it on and expect it to cool the house anytime soon. Doing this will not allow the unit to cool down the house for MANY hours. You can set the temperature up five to ten degrees but NOT OFF.
(8) Never turn the A/C off then back on in less then five minutes, this will short-cycle the compressor and can trip breakers, blow fuses, or cause permanent damage the compressor. You should have a time-delay install on the A/C to prevent this during power outages! Some setback thermostats have a time-delay built-in. Having a start capacitor and relay is a good idea.
(9) Keep blinds closed, curtains drawn, window shades drawn, a working attic fan would be a good idea, plenty of insulation in the ceiling & walls, air tight storm windows, keep outside doors and openings close, etc.
(10) "Icing of the indoor coil or the large insulated covered copper pipe "There are two main reasons for this, lack of air flow or low on refrigerant. Lack of air flow can be a dirty air filter, dirty indoor evaporator coil, dirty fan blades, damper in duct restricting air flow.next page >>
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