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RP
 
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Default prog. therm. and heat pump questions



wrote:

RP wrote:


Conventional Heat Pumps get an average COP of 2 to 1.



Depends on the climate, no? Might be 3:1.


Thus if the overnight (set back) runtime is reduced by an amount of time
that is twice the recovery time with heat strips enabled), then energy
is saved over not setting back...



Thus? :-)


Thus, yes, at some higher COP and/or warmer climate the trend will
reverse. That's why I said in summary that economy depends upon the
system

hvacrmedic



Nick