Increasing Max Temperature Above 104 Degrees

New To Forum
This might be a stupid question, but I am in the market for a new spa and I have found that new tubs have a max temp of 104 degrees F. This temp is nice, but I am buying for therapy purposes and I would like to raise the max temp to at least 110 degrees F. Is this possible to do using after market equipment or making a change in the electronics/heating elements of the spa? Thnx in advance for any helpful comments.
JamDon

on some it can be done - which is nothing more than either
1. Using the features of some controllers which will allow for minute calibration adjustments from the topside, or
2. Inserting a say... 470-2.2k ohm resistor (system dependent) in series with the temp probe.

But this isn't always possible as some controls use active (temp sensitive semiconductor devices) sensors instead of passive ones.

That said, this is never recommended.

Additionally, your quest for a 110 degree hot water for any extended period of time (more than a few minutes) is a bit dangerous, so whatever you do to your tub, you'll pretty much be on your own as nobody I know of will 'rig' one to work at that temp constantly.



Read the entire article here: http://www.rhtubs.com/104f.htm

Last thing, enabling a tub to work outside of it's 'manufactured' temperature range will certainly void all warranties.

Good luck.

Thnx for the advice. I had not read some of the warnings re: 104+ temps. Have a great one.
JamDon

NBD.
Most folks don't really realize how hot they get even at 104 degree temps. IMO, 104 is hot as hell, and anything beyond that really needs to have someone that has REPEATED experience in such an environment, and knows their personal limitations.

In the last 12 years, I've only had one customer that ever requested a temp that high, and he absolutely knew what he was doing - (albiet I have no idea if he's still alive today though! lol) - he used it for 5-8 minutes (as long as he could stand it), and then got out. His wife was Japanese... so this goes along the lines of a japanese soaking tub thing - like really hot - for a short time only, not the standard usa spa/hot tub experience that most assume.

For the money though, it'd be cheaper to build your own Japanese soaking tub for temporary short time use than to spend 6-8k on an existing spa and modifying it for such temperatures.

It looks like it's either - a temperature thing, or a massage therapy thing - or both. But when you take the temperature to the extremes, the massage therapy issue kinda goes away because of the time constraints.

Just my 2 cents.
Best of luck with your decisions.
(Btw, if you haven't done it yet, you really should find a tub somewhere and test it at 104.... before thinking you need 110).

My question or need is slightly different. As is, the controls won't allow for a setting over 104. I understand that. I have on occasion seen it register 105 (on the panel)and then the water temperature feels pretty good. Normally, the water is only getting up to 102, at the most. My SO wants the water to really be 104.
Can I use the dip switches and control panel to calibrate it, raise the shutoff limit or should/could I use a variable resistor in the line? Is there something else I could check or do? I haven't tracked down its exact location yet but is this probe movable (could I slide it out some and reduce its exposure) or is the resistor the only thing I can do to make it sense a lower temp, to match what the water really is?

Mine is a Balboa TS8000 Mach2 system; two years old.