Re:Powerwall 2 and Integrated Solar
by kwhitefoot on Saturday October 29, 2016 @10:10AM
(#12824013)
Depends how much you pay. The last time I looked a simple air to air pump the cheapest was 31dB and the most expensive was 21dB. So very quiet indeed.
About one in five houses have heat pumps where I live (about 40km south of Oslo) and I can hear them humming as I walk past but of course they are not the latest models. Still they are orders of magnitude quieter than the units outside the flat I rented in Cary, NC ten years ago.
About one in five houses have heat pumps where I live (about 40km south of Oslo) and I can hear them humming as I walk past but of course they are not the latest models. Still they are orders of magnitude quieter than the units outside the flat I rented in Cary, NC ten years ago.