Quote:
Originally Posted by Xringer
Nice work! I've got a broken (leaks) 24,000 BTU unit and have been thinking of using it with an Ebay heat exchanger.
|
Most of the estimates I come across indicate that domestic water heating accounts for up to 30% of home energy consumption.
Since your other 24K BTU unit is already heating your house, your leaking unit, if you can get it running, would probably be capable of supplying 3 to 5 times as much energy as you actually need for DHW.
So you could probably utilize some of that energy for your radiant heating which you already have in place.
Your existing radiators were designed for feed temps in the 160 F temp range and will have a pretty modest surface area, so the lower feed temps from your ASHP (likely around 120 F) will not supply nearly as much heat as your oil fired boiler, but it should help some...
-AC_Hacker