Quote:
Originally Posted by Mikesolar
You wouldn't have to go that far. Lots of systems have input water temps that low and still perform well. It just has to be designed for it. No problems.
Don't forget, the system has glycol in it so it won't have a freeze problem and it won't hurt the equipment.
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From my research,
in general, most heat pumps start to loose efficiency around 35-45F. Why not pay a few extra $$$ to have a system that will stay ABOVE that threshold. ?
I understand a extra well hole could be thousands of dollars, but it could mean the difference between sitting comfortably or having to install some kind of secondary heat source !
It is all about trade offs. If that secondary heating system only costs a few hundred to install and $100-$200/month to operate 3-4 months a year. maybe it IS a a more cost effective solution ... short term
!