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WiFi controlled water heater

Discussion in 'The Projects Forum' started by qrac, Jan 8, 2010.

  1. qrac

    Thread Starter New Member

    Jan 7, 2010

    In my current apartment I have an electric water heater with a 75l tank. To take a hot shower it takes around 1,5h to heat up the water to the right temperature (I love taking hot shower :)). To have hot water instantly e.g. when I am coming back home I need to leave the boiler on but then my electricity bills are sky rocketing or switch it on when I am back and wait. None of these options is good, that’s why I was thinking to solve the problem buy fixing up some remote control device for the heater.
    I want to connect the plug/socket to the internet and be able to control it through my webserver. I have found similar project that is using the ethernet: http://tuxgraphics.org/electronics/200606/article06061.shtml
    but I want to do it with WiFi instead, so I don’t have to put the ethernet cable all around my rented apartment.

    I would like to ask if there are any ready WiFi bords that I can utilize in my project, preferably in reasonable price and with implemented TCP/IP stack so I would just need to program μC to make it running. I have found a lot of transceivers but no boards that can be plugged into the circuit.

    Cheers and Thx for help
  2. JDT

    Well-Known Member

    Feb 12, 2009
  3. beenthere

    Retired Moderator

    Apr 20, 2004
    You might easily find that adding extra insulation and putting a dip in the piping to break thermosiphoning will save significant energy.
  4. t06afre

    AAC Fanatic!

    May 11, 2009
    If you like to "empty" the water heater with a long shower. I think that will cost you more than leaving the heater on. Water heaters are as a thumb rule well insulated and equipped with thermostat. So the heating element is not on all the time. I think your electrical bill are high because of poor insulation in your apartment (if you live in a cold area that is). You may gain a lot by some simple insulation tricks.
  5. whatsthatsmell

    Active Member

    Oct 9, 2009
    If you get back home at approx. the same time everyday, why not just use a timer switch designed for water heaters?