Create an intelligent timer for my water heater to save energy and turn it off when I don’t need hot water for a while

Very cool idea to save some money. I wish my setup supported that. Have you considered using multiple instances of the “once a day” or “sunrise/sunset” apps, with certain ones working only when the home is in a certain mode? It’s unwieldy, but it might get the job done better than IFTTT.

You made me think more about this… So I used the regular switch app; turn on at 6.39am, turn off at 11pm, turn off when everyone leaves the house (only between 7am and 9am - so it stays on during the weekend) and turn on when everyone gets back. No more ifttt. Thanks for the comment!

I currently have a intermatic pool timer on my water heater. Does a 240v appliance module exist, or do I need to kludge something with a relay?

Here is the link to the manufacturer’s web site of the switch/relay I used. It says that it works 90/260v [image] Z-Wave socket and switch; Nano Switch • Aeotec Use Z-Wave to control switch, socket or power outlet by converting existing switches and sockets to wirelessly controllable ones…

Thanks, but at 10 amps max, it’s about 20 amps too short. I am now looking at one of these but not sure it’s supported by SmartThings: [image] Amazon.com: Intermatic CA3750 InTouch Wireless Multi-Volt 120-277VAC Contactor... Buy Intermatic CA3750 InTouch Wireless Multi-Volt 120-277VAC Co…

Check this out: [image] Intermatic CA3750 2xSPST control with SmartThings Connected Things @smartthing Currently ST does not support dual relay’s natively. There are a couples threads on this now ZWN-RSM2 - ZWN-RSM2 Create a new device type AEON Power Strip - Zwave Powe…

Good news: I received my first gas bill after running my water heater timer for a month and it is about $15 (or 70%!!!) lower than the previous month. Since the only other thing we use had for in the summer is cooking, I attribute the saving to the timer. Total cost of the switch, cables, box, was a…

For those interested, I’ve created an event-driven app that can be used for @pizzinini 's use case, and for many others - like: turn on demand when bathroom door closes, off when it opens demand when motion detected near the kitchen sink demand when the laundry room light is switched on demand whe…

I just stumbled upon this little gem: http://www.gaswaterheatertimer.com/ Seems simple enough. Sorry for the dead thread revival.

Nice setup. For my Electric Water Heater I have a similar setup. After a few attempts, this is my method for controlling my Water Heater. GE Light Switch on the water heater 4in1 Motion Sensors in the BathRoom and Kitchen HEM (Home Energy Monitor) How it works: Motion detected in the Bath or K…

Water Heater Automation

Wiki Projects & Stories

pizzinini (Pizzinini) July 3, 2014, 3:04am 8

Check this out:

It looks like one switch will work.

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Water Heater Automation

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