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Probably better off installing more PV and running a hot water heat pump.
Depending on your homes lay out and where you live, some where cold like MA installing solar hot water can be a real pain because you have to run glycol and run these lines where you don't normally run water lines. That means you could be tearing out walls through 1 or 2 floors in a typical new England style home if your water heater is in the basement.
Actually I would only go through the trouble of thermal solar if I was going off grid and wanted to futlrther reduce my propane bill.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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