topic Re: Is my Lennox compatable with Nest in Nest Thermostats

Is my Lennox compatable with Nest

Mbpowell — Sat, 21 Sep 2024 15:18:08 GMT

I'm trying to confirm if my Lennox VRF system. How do I upload a photo?

Re: Is my Lennox compatable with Nest

Mbpowell — Sat, 21 Sep 2024 15:21:15 GMT

I only have 4 wires connected to the thermostat. They are labeled : 12v +, 12v-, HB, and HA. Can't seem to load a photo.

Re: Is my Lennox compatable with Nest

maedacortez — Tue, 24 Sep 2024 15:34:07 GMT

Hi Mbpowell,

Thanks for reaching out. I understand you need to check your system's compatibility, and I'm happy to help! To send me a picture, you can tap the camera icon at the top. If that's not possible, please answer the following questions:

Are the wire labels you sent (12v+, 12v-, HB, and HA) the ones from your control board? If not, please tell me what's connected to the wires on your control board.
Is your HVAC system dual or single fueled?
Is your HVAC system gas, electric, or other?
What is your country of residence?

I'll be waiting for your response.

Regards,

Manuel

Re: Is my Lennox compatable with Nest

Mbpowell — Tue, 24 Sep 2024 16:25:33 GMT

Manuel,

Image is attached. This is a electric VRF Lennox system. It's is a 3 zone system with separate thermostats at each location. Country of residence is US. I am located in Texas.

Regards,

Mike

Re: Is my Lennox compatable with Nest

maedacortez — Tue, 24 Sep 2024 17:40:37 GMT

Hi Mbpowell,

Thanks for the reply. I recommend contacting a local HVAC professional to check your system and determine if it's compatible with the Google Nest Thermostat.

Regards,

Manuel

Re: Is my Lennox compatable with Nest

Patrick_Caezza — Tue, 24 Sep 2024 23:40:24 GMT

@Mbpowell

Your system is not compatible with any of the Nest thermostats.

It uses a proprietary interface and is powered by 12vdc. All nest thermostats require a 24vac interface