Answer:
SEER 13 air conditioners can usually heat until the weather outside hits 5 degrees or so. Some air conditioners come with DC inverter unit which allow them to perform in 1 to 5 degree celcius weather condition. If you are looking for a system that work in negative celcius, the new hyper heat systems can work till almost -25 degrees celcius.
- Replied By:
BESSIE VAUGHN
(Mabank, NC)
- Replied Date:
04/09/2013
