Keeping Your Chickens Cool: Thermostat Activated Misting System

By Billiam · Aug 2, 2014 · Updated Aug 2, 2014 · ·
  1. Billiam
    In Arizona, we will average 100+ degrees from June to September. Our challenge and concerns are around shade and keeping our chickens cool. When the chickens are constantly exposed to this weather they get stressed and can even result in loss of life. I have had a misting system set up in my coop area for a couple of years now and have always had the idea of automating it with the temperature as the variable to set it off. I finally go to it and here is how I did it.

    Items Used:
    Attic Fan Thermostat - $26.50
    3/4" inline sprinkler valve - $13.47
    ~3ft of 16ga 3-wire electrical cord - $1.86
    15A 125V Male Plug - $2.99
    Plastic 6" x 6" x 4" junction box - $11.78
    3/8" sheet metal screws - $1.18
    24v Transformer - $14.96
    Cheap extension cord - I had an old one so i cut off about a foot of the female end
    3/4" x 1/2" PVC male adapter - $1.34

    Tools Used:
    1/8" drill bit
    Wire cutter/stripper
    Wire nuts
    Phillips & Flat screwdrivers
    3/8" drill bit
    Hack saw
    PVC primer and glue.

    I started by lining up the thermostat and transformer in the box to make sure everything fit nicely. The thermostat has some mounting holes so I drill a couple of 1/8" holes in the bottom of the box and secured it with 3/8" sheet metal screws. I then drilled holes in the junction box to line up with the outlet holes in the transformer. I stripped one end of the 16ga 3-wire cord and attached the male plug and stripped the other end to attach to the thermostat input. I cut about a foot of the female end of an extension cord and stripped its end to connect to the thermostats output. I could then plug the 24v transformer into the extension cord. I cut off the plug on the the transformer and wired it with the sprinkler valve.

    Everything wired inside the junction box.
    Thermostat cover on.
    Old ball valve:
    New sprinkler valve:
    I mounted the junction box under the roof of the roof a foot or so above and a few feet away from the mister nozzles. The junction box also has a lid to make it water tight.

    After Thoughts:
    I probably could have just used an A/C thermostat, but I didn't take the time to look into it and I'm not sure how well it would hold up with the outside heat and blowing dust. If you decide to make one of your own try that and see how it goes. I think that would save you from buying both a thermostat and transformer. I think the A/C thermostat would do that all in one device? Thanks for looking!

    Future plans:
    If I can easily find one I'm going to put, in line before the thermostat, a photocell that will shutoff the system at dark. The temperature can easily stay above 100 degrees after midnight. This would help to keep the area from becoming a mud hole when the chickens are sleeping.

    Thank you everyone for the advice and help!

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Recent User Reviews

  1. Anonymous
    "Neat idea!"
    4/5, 4 out of 5, reviewed Sep 15, 2018
    Very interesting idea and article. I especially like the items & tools needed that are listed.
  2. ronott1
    "Cool the chickens!"
    4/5, 4 out of 5, reviewed Jul 31, 2018
    Nice article for setting up an auto misting system that works by temperature
  3. mrs_organized_chaos
    "Great idea"
    3/5, 3 out of 5, reviewed Jul 23, 2018
    I have seen misters and concerned them with this hot summer, but a mister controlled by the outside temp is genius.


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  1. Mountain Peeps
  2. Twinklin
    awesome! Great job. Another project to attempt.
  3. EastTXChickens
    Thanks for the info!
  4. Noobie farmer
    You could run a drip line across the peak of the roof. A small amount of dripping water will evaporate and help keep the temp down.
  5. Chipper Chicken
    Maybe you could put this on the DIY thread too, it certainly qualifies!
  6. Chipper Chicken

    Nice! Thank you so much for this post and video! I have been wanting to automate a mobile mister for my coop and this gave me all sorts of ideas on how to do it. Thanks!

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