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LPG boiler for wooden hot tub

Postby Steve182 » Sat Mar 13, 2021 8:32 pm

I’m just finishing a summerhouse build at the bottom of the garden. I was hoping to get an LPG boiler to feed a couple of rads down there to make it usable in the winter. I wanted to build a wooden hot tub in front of it, I was wondering whether I could use the hot water side of the boiler to provide the heat for the hot tub. I have no need for hot water in the summer house so was thinking that I could use a pump of some type to take water from the hot tub to the boiler and then from the boiler back to the hot tub. I have a pump from an old whirl pool spa that ‘may’ be able to be used. Any suggestions, ideas?
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Simply Build It

Postby stoneyboy » Mon Mar 15, 2021 10:14 pm

Hi steve182
In principle you should be ok but because the water in the hot tub will contain chlorine or similar sanitizer you will have to incorporate a heat exchanger somewhere in the circuit.
Regards S
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