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Message
re: Installing a smart thermostat
Posted on 7/24/23 at 4:38 am to Miketheseventh
Posted on 7/24/23 at 4:38 am to Miketheseventh
quote:
Not all of them are like. My HVAC system has a 220V breaker for the outside unit and another 220V breaker for the air handler. If you know how to read a schematic it will show you what voltages are being used. My unit has a step down transformer that is 220 input and 24V output. And that is what powers the control circuit for my unit
Thats how they all work. Gas Furnaces are 120 volt.
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