Does this work with a 2 wire system? null

I have a 2 wire heating system and it works for me. When I checked using the compatibility tool it told me to take a picture of my wiring and send to customer support. I did and they verified it's compatible and told me which plugs to use in the nest

Our 2 wire heating system works fine with our Nest 3rd generation thermostats. The wires are small gauge, red and white, with a brown sheathing. I assume it's a 24 volt system. It's oil fired, baseboard hot water. When we programmed the thermostats, "radiators" is the choice we used, as there is no option called "baseboard hot water".

They have a pre-installation checklist at https://nest.com/thermostat/install-and-explore/. You just check which terminals are used by your old thermostat and it will tell you if the Nest thermostat is compatible.

Not sure, but if you go to the Nest website there is a section where you input what wires are currently in use by your thermostat and they will tell you whether or not a Nest is compatible.

I bought an Ecobee and had to return it because my red and white wire didn't power it on. Luckily Best Buy recommended a Nest for a 2 wire system. It worked! Hooked it up in 10 minutes. Check out my video: https://www.youtube.com/watch?v=6-hJJytNAXE

If the wires are two thick wires that probably means your systems is high voltage, which isn't compatible with Nest. Refer to Nest's website for more information.

Likely not. The 2 wire systems I am aware of are high voltage and the NEST thermostat only works with low voltage systems. So out to the web site, they have a compatibility page that will ask what type of wires you have.

If you go here the website may be able to tell you, otherwise you can send a photo to Nest and they'll have a look for you. https://nest.com/widget/compatibility/

No, it only works with the low voltage system (24 volts). The 2 wire system is usualty a high voltage (110 volts) system.

If you have 2 copper wires coming from wall, the nest therm will not work.

Yes, as long as the system is not a forced air system.

“Does this work with a 2 wire system?”

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Asked by Anonymous 9 years ago

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I have a 2 wire heating system and it works for me. When I checked using the compatibility tool it told me to take a picture of my wiring and send to customer support. I did and they verified it's compatible and told me which plugs to use in the nest
Answered by Vinodk 9 years ago
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Our 2 wire heating system works fine with our Nest 3rd generation thermostats. The wires are small gauge, red and white, with a brown sheathing. I assume it's a 24 volt system. It's oil fired, baseboard hot water. When we programmed the thermostats, "radiators" is the choice we used, as there is no option called "baseboard hot water".
Answered by Barry 7 years ago
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They have a pre-installation checklist at https://nest.com/thermostat/install-and-explore/. You just check which terminals are used by your old thermostat and it will tell you if the Nest thermostat is compatible.
Answered by Chuck 9 years ago
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Not sure, but if you go to the Nest website there is a section where you input what wires are currently in use by your thermostat and they will tell you whether or not a Nest is compatible.
Answered by RandomPerson8 9 years ago
Sorry, there was a problem. Please try again later.
I bought an Ecobee and had to return it because my red and white wire didn't power it on. Luckily Best Buy recommended a Nest for a 2 wire system. It worked! Hooked it up in 10 minutes. Check out my video: https://www.youtube.com/watch?v=6-hJJytNAXE
I would recommend:
- Google - Nest Learning Smart Wifi Thermostat - Stainless Steel
  Rating: 4.7 out of 5 stars with 16012 reviews
Answered by AmberK 6 years ago
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If the wires are two thick wires that probably means your systems is high voltage, which isn't compatible with Nest. Refer to Nest's website for more information.
Answered by howelbre 9 years ago
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Likely not. The 2 wire systems I am aware of are high voltage and the NEST thermostat only works with low voltage systems. So out to the web site, they have a compatibility page that will ask what type of wires you have.
Answered by Blue 9 years ago
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If you go here the website may be able to tell you, otherwise you can send a photo to Nest and they'll have a look for you. https://nest.com/widget/compatibility/
Answered by Schnapple 9 years ago
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No, it only works with the low voltage system (24 volts). The 2 wire system is usualty a high voltage (110 volts) system.
Answered by rlocsin 9 years ago
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If you have 2 copper wires coming from wall, the nest therm will not work.
Answered by Jbfaught 9 years ago
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1-10 of 12 Answers