On Thursday, March 9, 2017 at 3:14:37 AM UTC-5, mike wrote:
On 3/6/2017 9:22 PM, wrote:
On Mon, 06 Mar 2017 19:29:22 -0800, mike wrote:

On 3/6/2017 8:58 AM, DerbyDad03 wrote:
I am (was?) considering getting a touchless faucet for the kitchen sink.

Moen has a faucet that we like the looks of. We watched a few videos and the feature
that I liked was the control box that allowed you set the temperature of the water when the
faucet was activated by the touchless sensor. SWMBO and I thought that setting the temp
to warm would be good for washing hands, which is probably the time that we would not
want to touch the faucet. Meat juices, sticky messes, etc.

Well, it turns out that the adjustable control box was only used on the first generation
of Moen's touchless faucets and no longer available. The water will be at whatever
temperature the handle was last left at. To adjust the temperature once it is turned on
via the touchless sensor, you have to....wait for it....*touch* the handle.

So, without that feature, I'm not sure a touchless faucet is worth the extra money,
other than for the novelty.

I'm looking for opinions from those have tried them or opted not to get one for a specific
reason.

Unless you have a circulating hot water system, expecting a specific
water temperature for a random activation is optimistic.
But a maximum temperature is not.
A thermostatic mix valve will assure the water never gets hotter than
so hot, and gets to that temperature as quickly as possible(unlike a
fixed mix valve)

I believe that's a true statement, but does it apply?
If the flow required to get some warm water to the tap is more than
the total amount
of water you need, a thermostat ain't gonna help you.


Even if you have no circulation system or special valve, a faucet
that defaults to a set temp when activated would allow you to
avoid having it blast you with full hot if that was what was
last used. If you set it to lukewarm, it might be the temp of
the water sitting in the pipes, or it might be lukewarm, but it's
not going to be 130F. And there is at least some chance that you'd get
the desired temp water, as opposed to what temp was last used.