Honeywell T6 Pro Z-Wave thermostat

This PR in intended to: - Address bug #73 - "Honeywell T6 Pro Z-wave shows reversed cool/heat setpoints in HA Thermostat". - Also fix a few other problems encountered with auto mode. The Home-Assistant thermostat card now correctly supports the T6 Pro.

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… when it's coupled with homekit, you can't make any adjustments in HA. Besides, that would only work connecting ecobee to homekit if you already have an iproduct. I personally went with the Honewell T6 Pro Zwave and use my temp sensors around the house that are already connected to HA for automations. I moved completely off of nest for the reason of requiring local control only and the "Works with Nest" api fiasco that google killed off.

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I love my Honeywell T6 Pro Z-Wave thermostats. I picked them up because my system doesn't have a C-wire and these will run off AAs. But they're great thermostats overall. A nice simple touchscreen interface, plus perfect integration in Home Assistant.

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Honeywell T6 Pro (and perhaps other “T” WiFi models) is now working rock solid with HomeKit. It was also recommended by my HVAC guy who doesn’t know anything about tech, only HVACs. With HomeKit, you’re local. Be sure you have continuous power to the wall (the c wire for “common”). That’s one way where folks have gone wrong with their Nests.

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Honeywell T6 Pro z-wave ... completely local. I have 4 of them installed and they have been really stable; one small cosmetic glitch where they report temp in C instead of F occasionally. Previously had an unreliable radio thermostat CT-100 unit, and the Honeywell units feel like a step-up quality wise.

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I have the Honeywell t6 pro connected via HomeKit integration. The internet says it’s local when via HomeKit but I haven’t tested it to be sure. Works wonderfully though!

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The Honeywell works well enough for me. I'd recommend wiring up the C wire, however, if you don't already have one. The Z-Wave is a bit flaky when batteries run low. In my experience at least.

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Honeywell T6 Pro. These are excellent.

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It's zwave, not zigbee, but I have a Honeywell T6 Pro, and it does everything I could ask of a thermostat.

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My Honeywell T6 Pros work well. I think they connect via HomeKit integration, not the Honeywell one.

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The Honeywell T6 Pro ZWave is very popular and works great with home assistant. Though you do need to set up a ZWave network, which may be an additional cost if you don't already have one. Ecobee is currently in the communities bad books, they recently dropped developer account support which negatively affects home assistant integration. It's effectively impossible for something similar to happen with the Honeywell T6.

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I have the honeywell t6 pro zwave that i havent had any issues with

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.

Since ZWave and Zigbee are already local only, you should be good. For ZWave, I'd recommend a Zooz 800 coordinator. For the Zigbee side, go with the SLZB06-MR. The samsung stuff may require more involvement. For the HVAC stuff, make sure your thermostat is local only like the Honeywell T6 Pro ZWave (my personal preference) or some other Zigbee option.

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Want thermostat? Google or Ecobee Honeywell T6 Pro Z-Wave. Zero reliance on cloud services, and if you need an HVAC tech to work on your system, he or she will be very familiar with Honeywell thermostats.

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I picked up a used Honeywell T6 pro z-Wave off eBay for cheap based on recommendations here. It connected straight into HA via z wave. Works great. No apps or 3rd party anything. I have a second one that I got for my upstairs unit. DM me and I'll make you a deal if interested. My upstairs unit uses some Carrier bullshit and I can't use a regular thermostat without a new board.

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I can't speak for Ecobee as I use a Honeywell T6 Pro Z-Wave Tstat. I can however, highly recommend Reolink cameras. I have several of them, including the PoE doorbell and they've been super reliable. No cloud connectivity, so they're fully local.

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It doesn't fit your list of importance, but I have a Honeywell zwave thermostat - Honeywell T6 Pro

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Honeywell T6 Pro Zwave works really well with our radiant hydronic floor heating system.

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For what its worth here are two versions of the Z-wave T6 Pro. They did put out a new version a few years after the initial release that is basically the same. It can handle more advanced systems with more stages or dual fuels and has a few extra alerts that go with those types of system. So if you need a 3 heat stage thermostat (like ones 2 staged plus aux heat) try to track down the 2007 version of this model (the 2003 version is the one that you see on amazon and other places more often).

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What is best depends on your definition of best. I wanted one that integrates with Home Assistant and uses the Z-Wave protocol/doesn't require cloud access.... I chose the Honeywell T6Pro. Another commented states that the Honeywell app is rubbish but my use case was always to control it via the Home Assistant app so I never even installed the Honeywell app. It's great. I had an Ecobee in our previous place that was also good but isn't compatible with our new heating system so didn't use it in our new place.

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First, pick your protocol you want to use, then look at the options from there. I personally like the Honeywell T6 Pro ZWave. Solid performance and guaranteed to never get bricked due to some corporate entity terminating services on the cloud server.

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I just installed my first (of many) T6 Pro (Z-Wave). Quite happy with it so far. Honeywell is bulletproof for things like this.

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I use two Z-Wave Honeywell T6 Pro thermostats. Work great.

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Honeywell T6 Pro Z-Wave is very good. Rock solid connection. Simple, but reliable (which is what I care about the most). Works great with Home Assistant.

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You might want to include any protocols/ecosystems you already use: Zigbee, Z-Wave, etc. I went with the Honeywell T6 Pro Z-Wave. Very clean physical UI, very straightforward setup and use.

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Honeywell T6 pro is the way to go. I switched over from nest after getting tired of jumping through the hoops others have mentioned. You’ll regret using anything cloud based.

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… Assistant 0.96.4 in a Docker container on a Raspberry Pi 2B+ using the `homeassistant/raspberrypi3-homeassistant` image. I use a Linear HUSBZB-1 USB Z-Wave Controller. Component/platform: Either Z-Wave or Climate. Description of problem: I included a HoneyWell T6 Pro Z-Wave Plus thermostat in my Z-Wave network. When I open the Home Assistant UI, I see four near-identical cards: I use the built-in HomeKit component to make Home Assistant entities available to HomeKit. In Apple’s Home app, I see five near-identical cards for this thermostat: I asked in the forums whether this is expected …

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Ah ok, I see! For the T6 Pro, `Auto low` is basically OFF' since it won't start the fan unless it is actively heating/cooling. So I think it should be mapped as OFF. "Low" is, as you said, basically ON at "100%". I don't even think the T6 Pro supports multiple fan modes with the HVAC pinout. However, HomeKit Bridge doesn't even seem to get the Low setting. Maybe because of the uppcase as you pointed out? Here is an output of the developer tools for `climate.t6_pro_z_wave_programmable_thermostat`: ```yaml hvac_modes: - 'off' - heat - cool min_temp: 7 max_temp: 35 fan_modes: - Auto low - Low - …

Excerpt saved from GitHub on 2026-10-23.