I'm looking at getting a new AC/Heating system and I would be locked into using an American Standard system that also is locked into using their thermostat. So I'll loose my ability to use my Ecobee. But I'm not seeing American Standard as a device type. And only found one thread about someone trying to use a Trane system that sounded like it used the same communication system. While the American Standard thermostat says its ZWave compatible I'm concerned about what I read that it might not be controllable from Hubitat if it doesn't have an API for doing things like turning heat/ac on/off and setting temperatures.
That thermostat can act as a primary z-wave controller (same as Hubitat), but it cannot join Hubitat as a z-wave device that supports the relevant command classes.
Also, FWIW, Daikin and Bosch make variable speed heat-pumps that can be controlled by conventional thermostats like the ecobee.
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Thanks, but due to it being a condo that a supplier is doing the estimates for and the AS is the equipment for I don't have the options of picking my own AC equipment. Unless there is a way to get a different thermostat which also doesn't look like an option. Looks like I'll just go back to sitting under a sprinkler in the summer heat wave. Which isn't a bad option either.
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It's even better with a G&T or a Pimm's cup.
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I will try not go off on my thermostat rant like I usually do when I look at these proprietary systems. 
You probably can use your Ecobee with this new system, but you would lose the variable speed, and features like dehumidification. Most of these systems will default back to a 1 or 2 stage system when used with a conventional thermostat. I am not sure that is a good tradeoff, but it often IS an option.
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Thanks, but I'd like to know for sure I have an option to control it via Hubitat. I just need an on/off control and set the temp control for how I have the Ecobee working with my current furnace. To have AC dropped in it needs the external heat pump and a new furnace that are all integrated together with the Accurite system and their thermostat with the company our condo complex brought in who's using American Standard. Not going to commit to a $25k system unless I know for sure I have home automation functionality. Waiting to hear back from the install company and if they can use Daikin/Bosch options. Or maybe find another install company that will offer other equipment solutions.
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Suddenly, the thermostat control solution that home automation hobbyists used back in the 1980s starts looking good again. It was a heat strip that you'd wrap around the thermostat, controlled by an X-10 appliance module.
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I will probably just stick with my non-automated deck mister for the two weeks of heat wave at this point.
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I can confirm 100% that you cannot control, nor usefully status the American Standard Platinum 850 with Zwave thermostat.
It is a horrible piece of (fill in the blank), and I regret the day I ever put it into my system. The HVAC system itself is Great, but that thermostat is a steaming POS.
As @neonturbo said (implied), you're kind of screwed with these multistage, variable speed systems -- I've looked into it, and there's nothing else out there (as of yet) that can control these systems fully and that are friendly to home automation.
This is decidedly unfortunate, as I really wanted to be able to automatically drop the HVAC into standby when the house is running on battery, but I simply can't. GRRRR.
S.
p.s. The new Ecobee Smart Enhanced or Premium might handle your new system (as @neonturbo said), but I've got to do some digging on that.
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Best answer yet. Thx.
I've dropped the idea of using American Standard since there seems to be no good option for controlling it outside of their thermostat/phone app. I did see they have an Amazon Alexa app, but with only 2 reviews that didn't sound good, doesn't look like a good option either. And FYI, the idea of hooking it up to an Ecobee and defaulting it to running in 1/2 stage mode. The AS installer said that would void the warranty.
Ouch. It's a really frustrating thing. I spent stupid money on this hyper efficient HVAC and the idiotic Thermostat prevents me from even gracefully shutting it down during a power outage. Arrrghh!
S.
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There may be a way to control the American Standard. It will take several weeks to get it rolling and it requires SmartThings installation of the AmericanStandard thermostat. (I have already done a SamsungHVAC <-> SmartThings <-> Hubitat driver. And American Standard thermostats have a STs integration in add devices). It will require some effort on your part getting me specific data (I have instructions) then I develop and you test and we make available to many.
Cost is zero. Just an unverifiable request for you to be kind to someone else. (I am a bored, 73yo, retired aerospace engineer.)
Contact me via PM if you are interested. I will put you in a quick response queue.
Dave
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The solution was to get a Mitsubishi heat pump. Works great, connected right to my existing Ecobee thermostat and I have full control over it with Hubitat.
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