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Hey there Dr. Spa
I already have my heat exchanger plumbed in and have committed to everything except the heat controls. Just figuring out the best way to control the heat with timers and some override is what I am after now.
: Take the heat exchanger back and get a refund.
: All you have to do is run a loop of 1/2" copper pipe through the
: side of the hot tub (near the bottom). Run it in soft copper pipe
: (1/2" ID / 5/8" OD...typically this pipe is specified by
: the OD). A 50' roll of pipe will make two revolutions around the
: inside of the tub. Run your boiler water through that, controlling a
: zone valve with a thermostat, and you're good to go.
: This used to be a VERY common way to heat a wooden hot tub. Most people
: just used their homes hot water heater. I still heat my hot tub this
PLEASE NOTE: We are Roberts Hot Tubs Inc. (manufacturers of traditional wooden hot tubs)! If you found this webpage through a search engine while searching for a different brand of spa, we are not them! We simply appeared in your search due to that name being talked about on this particular web page. The phone number below will reach Roberts Hot Tubs, not the manufacturer of the brand of spa you're searching for. This is a public forum and you're more than welcome to post a question asking for contact or other information for a particular brand of spa. Almost certainly someone will be able to assist you.