Honeywell T6 Z-Wave thermostat

I use the honeywell T6 zwave. It runs on 3 AA batteries which last over a year and connects right into HA with zwave integration. Honeywell T6

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

This is what I use (T6 Z-Wave). No real complaints. It’s relatively basic but so is my my HVAC system, so it pretty much does what I want.

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

This isn't actually an "issue". Just documenting an example use-case that might be helpful for others or for some LLM to find. I have a Honeywell T6 ZWave thermostat. It shows up in HA as a "single-mode" thermostat. IDK if "single-mode" is an official term, but basically I just mean you can only set one mode at a time. I was coming from a Nest thermostat and really wanted to replicate the "Keep Between" functionality. I also really wanted it to show up nicely in Apple Home via the Homekit Bridge integration. So I found this ha-dual-smart-thermostat extension. It was pretty easy to get the …

Excerpt saved from GitHub on 2026-10-23.

I recently switched from my Gen 2 Nest to a Honeywell T6 z-wave. I love it. No horrible app that requires constant cloud connection. It doesn't randomly try to guess the temperature you want. There is an auto mode to set min/max temps. Any more complex temperature automations I just handle through home assistant. The z-wave is solid as a rock. I have a little usb z-wave dongle on an extension cable 2 rooms over. It's never lost connectivity. Setup was super easy. And it has some AA batteries as backups in case of power loss. I just wish I could find some more reliable z-wave stuff like an …

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

I have used both. I started with Ecobee and switched to the Honeywell T6. The Ecobee can do most functions via HomeKit (to keep it local), but not everything. I have a heat pump and needed more advanced functionality than what the HomeKit integration could offer. The Ecobee internet API is more complete than HomeKit, but it obviously relies on the internet and I found it only worked ~95% of the time which is just too unreliable for me. The T6 offers much more control of functionality via Z-Wave, and works very reliably. I use a mixture of automations and the Scheduler Component (installed via …

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

Honeywell z wave I just got in think.kts the t6 has been a legitimate game changer vs my wifi Honeywell inhad previously

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

I've been using Honeywell T6 z-wave thermostat for a few years. I have occasional blips in it being unavailable recently, but that might be my z-wave antenna placement. Otherwise it's great, has quite a lot of configurations available, and can work either on batteries or from the 24VAC if you have a C wire.

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