Tune and clean your AC regularly....A poorly maintained air conditioner uses 10 to 30 percent more energy and has a shorter life. Proper maintenance can extend the life of your AC unit. It is important to have a professional tune, clean, and check controls and refrigerant levels on your central AC unit. If your refrigerant needs recharging, this correction can improve efficiency by 20%. While you need temperatures between 65-70 degrees to get correct readings....you can call now to be put on the maintenance list. We will call back when temperatures are warm enough to do a proper check and schedule your appointment at your convenience.