I have three thermostats honeywell programable do all three have to be replaced or can one be installed with the other two? null

Question

Familyshopper · Accepted Answer

No, You can replace one at a time it will not effect the T stat in any way as they are separate zones. I purchase and installed mine one at a time to make sure I was happy with the product and the cost.

Answered by Familyshopper 8 years ago

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Topcop · Answer

I was able to install just one on the downstairs zone while the upstairs zone still runs my old programmable thermostat.

Rdshdow · Answer

It really is going to depend on the Zone control box you have and how it uses the signals from the thermostats. If you have a variety of Honeywell Zone panels it should work, check forums online with your specific model of Zone control board. DuraZone boards do not work with the Nest. I switched mine with a Honeywell HZ311. You can then have a mix or all the same thermostat.

Answered by Rdshdow 8 years ago

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Drakn · Answer

I think you need to get one per location if they are independent HVAC systems. But then you can manage all 3 from one nest account, that would be expensive though but worth it. 

I would check with your HVAC vendor to get the correct info before investing in one.

ShankarS · Answer

We initially replaced just one of our 2 thermostats and it worked fine for that zone. We ended up eventually replacing the second just to give us the benefits of dual zone smart thermostats to work better synergistically

Answered by ShankarS 8 years ago

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“I have three thermostats honeywell programable do all three have to be replaced or can one be installed with the other two?”

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