A hot tub is a fundamentally simple thing. All it really has to do is hold hot water and people (How to Build Your Own Wood-Fired Hot Tub). But of course, water doesn’t heat itself, so the hot tub needs a heater. The people using the tub also leave dirt and oils in the water. That feeds bacteria, which can make the tub smell bad and even harm the health of bathers. You could replace the water every few times you use it, but heating the water is expensive.

You also need a filtration system and anti-bacterial chemicals. Also, it can take hours to heat up a whole tub full of water, and you want to soak when you want to soak. So you will want to keep the tub at bathing temperature all the time. That means a thermostat to control the heater, and top notch thermal insulation for the top and cover, to keep the heat in when you aren’t using it. That simple hot tub is not so simple, anymore.

Some folks are deciding to re-simplify things, though. They are turning back the clock and choosing simplicity and peace over convenience and immediacy. They are choosing to use a wood-fired hot tub. Some of them are even choosing to build their own.

If you’re considering building your own wood-fired tub, there are a few decisions to make long before you pick up the tools.

You’ll need to decide what to make the actual tub out of, first of all. You’ll also need to decide what sort of heating system to use. There are two main types of wood-burning heating systems to choose from, and a bit of ingenuity can turn almost anything into the tub. It just needs to be large enough and be able to hold hot water without leaking.


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Studied B.Sc in the major of Transportation Engineering.

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