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    Garage Heater

    Lookinf for a thermostat to control my garage heater. It needs to have a heat setpoint as low as 35-40 degrees. I bought the Trane thermostat from Homeseer, but it's heat setpoint won't go any lower than 55 degrees. I don't need the garage that warm most of the time. Can anyone suggest a cheap thermostat or way to control my heater? It doesn't need to be fancy and have schedules, etc. Just want to hold temp at about 40 degrees and be able to warm it up temporarily if I'm going to be out there.
    Thanks

    #2
    Personally, I've used a simple temperature sensor, connected to HS thru the RFX plugin. The setpoint is a virtual device in HS and the control, an outlet module (Z-Wave) controlling an electric heater through a relay. I control the output with an event which also turns off the heater, and warns me thru the speaker client, if the garage door is left open.
    Real courage is not securing your Wi-Fi network.

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      #3
      Originally posted by Wadenut View Post
      Personally, I've used a simple temperature sensor, connected to HS thru the RFX plugin. The setpoint is a virtual device in HS and the control, an outlet module (Z-Wave) controlling an electric heater through a relay. I control the output with an event which also turns off the heater, and warns me thru the speaker client, if the garage door is left open.
      In the event that HS fails is this something critical that still needs to work? I think its going to be almost impossible to find a thermostat that will go that low. Is there a reason 50 is not acceptable?

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        #4
        Originally posted by Dweber85rc View Post

        In the event that HS fails is this something critical that still needs to work? I think its going to be almost impossible to find a thermostat that will go that low. Is there a reason 50 is not acceptable?
        I suspect the amount of energy used. Huge difference in costs between maintaining something at 50F versus 35 - 40F (just above freezing).

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          #5
          If you just need a plain heat thermostat that will work in a garage, this one will do it:

          https://www.amazon.com/Honeywell-TH1...dp/B00H6ARNXO/

          And this one has a setpoint down to 35F

          https://www.amazon.com/gp/product/B002VKARIW

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            #6
            Originally posted by TC1 View Post
            If you just need a plain heat thermostat that will work in a garage, this one will do it:

            https://www.amazon.com/Honeywell-TH1...dp/B00H6ARNXO/

            And this one has a setpoint down to 35F

            https://www.amazon.com/gp/product/B002VKARIW
            A simple thermostat like these would be fine. But I do need a thermostat that can be changed by HS-zwave preferred.

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              #7
              Originally posted by Dweber85rc View Post

              In the event that HS fails is this something critical that still needs to work? I think its going to be almost impossible to find a thermostat that will go that low. Is there a reason 50 is not acceptable?
              My Honeywell ZWave (in the house) thermostat is regularly set to 5 degrees Celcius to keep the furnace off. The only reason I don't use a thermostat in the garage is that, in order to avoid switching 110 Volts in the thermostat itself, I would need a small relay driven by the thermostat (and an external low voltage supply) to drive the larger 110Volt relay which in turn switches the 20Amp heater. I haven't had such a failure of HS as you're concerned about in several years now. In any case, it would be easy to install a manual freeze protection thermostat if necessary (as I do have on my propane furnace in parallel with the controlled ZWave thermostat).
              Real courage is not securing your Wi-Fi network.

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                #8
                I control a greenhouse temperature with WiFi smartplug that has Tasmota firmware with a rule to control on / off based upon setpoint with a hysteresis to prevent cycling. Sonoff S31 handles 16 amps and reports energy so I can see what it actually costs to run the greenhouse.

                Similar rule for exhaust fan for cooling on sunny days

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                  #9
                  Originally posted by jrjmpls7 View Post

                  A simple thermostat like these would be fine. But I do need a thermostat that can be changed by HS-zwave preferred.
                  Here you go, you want a ZigBee thermostat. Low-cost, will integrate into Homeseer easily. Will go down to 41F (5C) setpoint.

                  https://www.aliexpress.com/item/4000...95810559%22%7D

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