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I ended up just getting a bigger PV system and a heat pump hot water system. The clincher is - how much hot water do you actually need? Just running for about t
by stephen_g 3y ago
I ended up just getting a bigger PV system and a heat pump hot water system. The clincher is - how much hot water do you actually need? Just running for about two hours at 1kW draw, the heat pump generates all the hot water I need for the next 24 hours.
So since I have limited roof space, it’s better for me to use that for PV and just use a few kWh of that per day for water heating, instead of dedicating space to a solar hot water collector.
- Xylakant 3y agoThe idea behind the combined panels addresses the limited space concern - these are full-size PV panels with a back plane that harvests the heat and cools the panel up front.
- WithinReason 3y agoThere is that idea where you use water to pump heat under your house over the summer and use it for heating over the winter, and vice versa for cooling.