It looks like the T6 that was tested with HE has been replaced.
TH6320ZW2003 has been replaced with item TH6320ZW2007.
Anyone have any experience if this will work. Hate to buy a 300 dollar thermostat if not compatible.
Thanks in advance
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Yes. They work perfectly. The only difference with these, as opposed to the 2003, is that these have a 700 series Z-Wave chip.
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Perfect. Appreciate the reply. Can’t find one locally so have to special order. Would be hard to return if it didn’t. Thanks again
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Not sure where you are located, but Amazon has them:
https://www.amazon.com/gp/product/B0BHTQF8NL/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
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They don’t have them in Canada sadly at Amazon
I can confirm as I have several of the 2003's and several of the 2007's (9 in all).
They have been rock solid, and don't remember having a single missed command with any of them ever.
9??? How big is your house? JFC....
I actually answered this same question a long time ago here -
"Nothing exciting. My detached garage is one, then I have 8 heating zones in my (small) house. I have 2 cooling zones - 1rst floor and 2nd floor. The 2 cooling zones are shared on 2 of the centrally located thermostats (that are also near the returns) on each floor. So, when I redid my house, I used cast iron (sunrad) radiators throughout. I did home runs to a manifold with zone valves. At that point, I realized it would be pretty easy to let every room have it's own thermostat just by having a zone controller with enough zones - so that is what I did."
That's it. 
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