4 ms·
Probably F. New heat pumps are usually good to -20C or -25C, which matches -5F to -10F. My heat pump is 11 years old and is good to -15C.
by timbit42 4y ago
Probably F. New heat pumps are usually good to -20C or -25C, which matches -5F to -10F. My heat pump is 11 years old and is good to -15C.