The Ducane 4AC18 air conditioner has two stages of cooling: high and low. Most of the time' the unit runs at the lower setting' resulting in more even temperatures and greater energy savings. But on hotter days' it can ramp up to a higher output to maintain your set temperature. When paired with a matched variable speed indoor component' you get the added benefits of quieter operation and greater humidity control.
18 SEER exceeds federal energy efficiency standards and assures you substantial energy savings' even during the hottest summer months
Efficient' two-stage compressor is designed to operate at lower speed most of the time for quieter' money-saving operation
Entire unit is 100% factory run-tested to help deliver the highest possible level of reliability
Permanently lubricated condenser fan motor needs no annual maintenance