We have a hot tub that takes about 2 days to heat up from cold, I have looked into solar but won't power the pumps and such so looking at a clear top to heat naturally and heat exchangers What do you guys use or equipment to heat or anyone that installs them
My old one used to be electric and that was the same with a long warm up time. Dread to think what it added to the electric bill! If I got another one now, think I’d have a good look at those wood fired ones.
I have one of these to heat the (small) pool. https://www.ebay.co.uk/itm/Pool-Heat-Exchanger-Durable-Spa-Sauna-Boiler-Heater-Machine-Stainless-Steel-Tube/223498998100 I have the 75KW one and it will warm a 4M by 2.5M pool in a day. I worked on the basis that when I'm running the pool, the central heating probably won't be on, so it's on the heating circuit as an extra radiator.
