[Greenbuilding] Opinions on electric tankless HW heaters?

[Carmine Vasile]

Richard: Great job. Ever consider adding a GFX? Carmine

Date: Fri, 22 Apr 2011 17:09:11 -0400
From: richard6 at gmail.com
To: greenbuilding at lists.bioenergylists.org; 9watts at gmail.com; swell at labranch.com; bwaldrop at cox.net; paul.eldridge at ns.sympatico.ca
Subject: [Greenbuilding]  Opinions on electric tankless HW heaters?

Here is recent consumption information:
Biggest consumption is the water heater which I rewired from 240/3000 watt to 120/750 watt. This was simple to do (but took a lot of nerve!). By connecting 120 volt to existing 240 volt water heater the elements output 1/4 the wattage. A timer switches on and off as follows: 21:30on - 22:30off, 23:30on - 24:30off, 1:30on - 2:30off, 3:30on - 4:30off, 5:30on - 6:30off. This simulates 375 watt continuous on for the water heater as per the graph. Fridge is on a timer also that simulates this pattern. Fridge does not come on at all during the peak (red) periods; only green and yellow. This creates a very flat consumption pattern over 24 hour period.






















Regards,
Richard

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