On Mar 20, 2:30 pm, Wayne Whitney wrote:
On 2007-03-17, wrote:

Has anyone tried thermostatic shower controls with a with tankless
(demand) water heaters to avoid temperature fluctuations? Any
comnents/ thoughts?

You know, I started looking into this, and now I don't understand what
a "thermostatic" shower valve does. I thought it would adjust the
relative flow of the incoming hot and cold water supplies to provide
the desired temperature, regardless of the incoming temperatures. But
I have read a number of the manuals which state that if you adjust
your water heater temperature, you have to recalibrate the
"thermostatic" valve. In which case it doesn't seem very thermostatic
to me.

Are there any thermostatic shower mixing valves that will maintain the
set temperature given fluctuating hot water supply temperatures?

Cheers, Wayne

Not that Iam aware of they will not heat or make up for lack of hot
water. If you are going to run the system you describe it will cost
you a fair amont of electricity