Re:New York to Ban Natural Gas, Including Stoves, in New Bui...
by magicalhippo on Saturday April 29, 2023 @05:10PM
(#35757234)
This guy[1] ran a test on his home during last winter, and found that his mini split had a COP of around 1.5-2.5 down to -10C.
The data wasn't terribly correlated to temperature, though he didn't have a mini-shed for the outside unit to protect it from snow, so it probably had to defrost more often during the less-cold, snowy days.
FWIW here in Oslo, we've been using a mini split as the main heat in our home, where it's often -15C for long stretches during winter, and can get down to -25C. It's in the main livingroom, and we do supplement the upstairs bedroom with resistive foil floor heating during the coldest periods. Other than that it's doing great, and comparing the electricity bills with friends and colleagues who don't have a heat pump it's definitely helping a lot.
The data wasn't terribly correlated to temperature, though he didn't have a mini-shed for the outside unit to protect it from snow, so it probably had to defrost more often during the less-cold, snowy days.
FWIW here in Oslo, we've been using a mini split as the main heat in our home, where it's often -15C for long stretches during winter, and can get down to -25C. It's in the main livingroom, and we do supplement the upstairs bedroom with resistive foil floor heating during the coldest periods. Other than that it's doing great, and comparing the electricity bills with friends and colleagues who don't have a heat pump it's definitely helping a lot.
[1]: https://youtu.be/fxEqVuiHhM0?t=523