“Will this thermostat work with a natural gas boiler heating system?”
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Yes
Sorry, there was a problem. Please try again later.Absolutely. I have two of these and two of their less expensive one on my four zones. I added a transformer (24v 40VA, on a junction box above the boiler) rather than trying to use anything on the boiler to power them, as I wasn't sure what the power draw would be for 4 of them. Used the C and RC terminals on the thermostat for power which connect to the transformer, removing the R/RC jumper on the thermostat. (The original two wires remain on the R and W). This works on a HEAT ONLY system. There are multiple options for how to power them, lots of info online. I had to run additional wire as my thermostat wiring was only two conductor, but in my case that was fairly easy. Your situation may be different, and I am not a professional. But it works well, and I have done the same thing at my church, where the remote monitoring and alerts through the account with Honeywell is very useful.
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