On Thu, 29 Jan 2015 22:13:24 -0700, gary wrote:

I have 2 water heaters, plumbed in series.

I'm guessing electric?


1 is turned off, as 1 is normally adequate.

Would like to be able to turn heater "ON", remotely via internet/wifi,
when I will need more that the usual amount.

Rheem has a nice app for that. It goes with their $2k WH.

X-10, Insteon, Leviton, or Lutron could be used with software and a
heavy duty relay. Automation module plugs into the wall, relay splices
into the 240v power into the WH. Set the WH to normal heat and ON,
then control power via the module/relay. Software on the PC controls
the module.

--
If more sane people were armed,
crazy people would get off fewer shots.
Support the 2nd Amendment