Re: Conservation of energy question - Reversing A/C compressor to create heat

"Nomad" <Fenway.rocks@xxxxxxxxxxx> wrote in
news:feednclFqasqaMHYnZ2dnUVZ_vqdnZ2d@xxxxxxx:

If an A/C unit can move 3 BTU of heat for every BTU equivalent of
electricity, why can't the process be reversed? Why this may be moot
for those with gas heating, some buildings still have electricity --
such as my prewar highrise.

This called a 'heat pump'; it is a common practice in
moderate climates.

http://en.wikipedia.org/wiki/Heat_pump

--Damon

.

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