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Help installing nest with power cable on older 2 wire electric heater

Community Member

Have a 2 wire electric forced air heating system. I got everything hooked up and seemed to be working I just know where to put the c connector in the power stabilizer. There is no circuit board, I figured I'd just put it 120v wire and that didn't work worried I messed it up now! Please hep


Silver Product Expert
Silver Product Expert

One thing you need to understand and remember is that the nest thermostat like all traditional and conventional thermostats operates on 24 V of AC power. Not 120 V or 240 V. The same is true about the power connector it is designed to work with 24 V of AC power. When your system is a forced air system, your 24V Power Common is inside the forced air unit not on the heater itself. Now do you have a nest power connector, or what is the thing you called a “stabilizer”?

The AC Cooling Wizard

NestPro and HVAC company owner

Hey folks,

We appreciate your help here, @CoolingWizard.
@Irishscout, I wanted to follow up and see if you are still in need of any help. Please let me know if you are still having any concerns or questions from here, as I would be happy to take a closer look and assist you further.


Hey there,

Checking back in should you still have some questions here. Let us know by replying to this thread.


Hi everyone,

Just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let me know.