February 22, 2011 AT 11:23 am

Gas Water Heater controller built around a netduino-mini, a DS1307 clock and a HiTech HS-6635HB servo

From the Adafruit customer forumsA Gas Water Heater controller built around a netduino-mini, a DS1307 clock and a HiTech HS-6635HB servo!

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  1. Neat Idea, neat implementation. I like the water idea to measure torque, very clever!, but there are a few things you may want to consider:

    – It generally costs less to keep the water heated 24/7 that to re-heat it several times a day. Especially if you live in a cold climate.

    – Most water heaters, even older ones, don’t run the burner very frequently, and are usually very thermodynamically efficient! They make extremely good use of the heat generated by the burner. You may actually save more energy by adding additional insulation to the water heater, versus turning it up and down, though check your local regulations before doing so!

    – Also, evaluating how hot the water really needs to be (maybe lower than you think!), and running the heater at that temperature may net you more energy savings as well. Some appliances, especially dishwashers and Washing machines, have specific temperature requirements – check your owners manuals to be sure…

  2. I think its awesome to see people make and experiment! I really hope actual results follow-up. I’m curious to see if this kind of diy work actually provides any significant efficiency improvements.

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