Before looking at the details of the technology, it is important to note that air at a temperature above absolute zero always contains some heat and many of these heat pumps manage to extract heat even at low temperatures as -15 C degrees.
Tupu na-achọ na nkọwa nke nkà na ụzụ, ọ dị mkpa iburu n'obi na ikuku na okpomọkụ n'elu zuru efu mgbe niile nwere ụfọdụ okpomọkụ na ọtụtụ n'ime ndị a nfuli jikwaa wepụ okpomọkụ ọbụna na ala okpomọkụ dị ka -15 C degrees.