Splitting away from the "Turning our heat pump off over summer and a general moan" thread....
19 hours ago, Marvin said: I would recommend checking out a solar diverter to anyone who has PV and a hot water tank with an immersion.
Phil T Responded:
I did give this a lot of though and decided against as I get 15p fixed SEG, my heat pump is doing better than COP of 3 for DHW, so at my current variable electricity rates 33p it would cost me 4p/kWh to use a solar diverter instead of the heat pump, or cost me 8p/kWh assuming "Cosy" rate 21p/kWh, and that's before taking into account the up front cost of the diverter (a few hundred quid?). Have I got that logic correct or am I talking complete cobblers?
Hi @PhilT
No. Your thoughts make sense. You've checked out about a solar diverter and decided its not for you. I forgot all the possible setup differences which mean it is better for some than others: We do not have a smart meter. We do not get paid for exporting. We have one rate for electricity.