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Wood-Fired Ocean Hot Tub

Step 7Enjoy!

The pictures tell it all. We spent an hour or two soaking in the hot, hot water (we got it up to 104 degrees!)

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13 comments

Oct 11, 2011. 5:52 PMTizaro says:

perhaps if you had a barrel for the fire (think hobos under a bridge kind of barrel) then just mount the exchanger ontop of that?

Aug 11, 2011. 5:53 PMstarfox365 says:

No wonder there are no women in the tub.

Jul 4, 2008. 6:12 AMDark Solar says:

A good idea...but tell Joe Hair-shirt to cover his junk next time.

Jul 24, 2011. 8:20 AMjspence1 says:

You can't tell anybody anything in SF ...

Jul 24, 2011. 11:08 AMDark Solar says:

LOL, true enough. Been a while since i looked over this -ible...the pic in question has been suitably photoshopped in the intervening time so Joe Hair-shirt (the guy directly under the camera but not looking up in pic #4) is no longer showing his crotchly meatery.

Jul 24, 2011. 9:35 AMrippa700 says:

Instead of the complicated heat exchanger/generater/pump how about spiraling the copper and laying in in the fire slightly below the hot tub. The heat will flow up to the tub and cold will return - I use that in my house for a back-boiler on the wood stove to heat the hot water. Should work and be really simple.....

Jul 22, 2011. 7:34 AMtimmccool says:

i would have used plastic and just doug a hole to a larger size. could have even formed seats.

Apr 10, 2011. 11:02 AMlperkins says:

The only thing I can think of to improve it would be to put a turbine in the chimney and make the pump also run off of the fire. :)

Apr 10, 2011. 11:34 AMcodongolev says:

I already posted about this, but I saw a tub that did that.... if you look up those boats that run on candles, it used the same principle, except it used a bonfire and attached to the side of the hot tub.

Apr 10, 2011. 11:38 AMcodongolev says:

found it!
http://www.xerxy.com/2010/09/20/coolest-hot-tub-ever/

Apr 10, 2011. 9:15 AMmunkless says:

How much did you spend on the copper piping? I wonder if old water heater radiators would work for this project. Very fun project!

Apr 10, 2011. 10:56 AMARJOON says:

ok course it will work

Jun 20, 2010. 12:51 PMjames91375 says:

Ok guys I have an idea for you How about a hot tub that floats in the ocean, All you will need to inflate is the top ring as the rest of the inflatable will be pushed out by the water inside the pool I recommend finding a pool at least 3 to 4 feet deep. If you boat has power you can add bubbles via an air pump and plastic ring at the bottom with holes in it. weight it down with something non sharp. do you heat exchange off the coolant on the motor. if it is a motor boat. etc

Nov 10, 2008. 1:26 AMpressurepoint14 says:

A great idea. But the execution is a little off. 6 dudes in a hot tub is not the ideal use for such a romantic device.