All categories/Tech & Smart Home/Smart Thermostats/Honeywell/Honeywell Home T6 Pro
Honeywell Home T6 Pro

Honeywell Home T6 Pro

Scored on 38 verified owner verdicts, from 289 comments read across 5 communities
TL;DR
Owners lean heavily on the T6 Pro for its rock-solid Z-Wave and local smart-home control, pairing it reliably with Home Assistant and similar setups while keeping it working even when the internet is down. It handles nearly any HVAC configuration without a C-wire and is praised as an affordable, dependable workhorse. The main gripes are a dated interface, the occasional finicky or bad unit, and some quirks in temperature and humidity reporting.

87% of 38 verified owners recommend the Honeywell Home T6 Pro, based on real owner verdicts aggregated from Reddit, enthusiast forums, and YouTube.

See the problems 4 owners report →

What 38 owners say
289 comments reviewed · scored on the 38 clearest verdicts
87%
Recommend
33 owners
2%
Neutral
1 owners
11%
Don't recommend
4 owners
Source
Score
N
Counted in the score
Reddit
86%
37
Other forumsHome Assistant, Hubitat
33%
3
Reviewed, but not counted — and why
YouTubeiowner comments
11%
38
Affiliate blogsipaid commission
100%
1
No clear verdictiSetup, tips & quirks
3

Affiliate blogs here say 100% recommend, while the owner-based score is 87%. They earn a commission on every sale — so we show them for transparency but never let them move the score.

The headline score reflects owners (Reddit, enthusiast forums), independent lab tests, blogs with no affiliate links, and YouTube owner-comments when they line up with owners. YouTube and Affiliate blogs are shown for perspective but kept out here — hover the i for why.

What owners like
  • Excellent Z-Wave and local smart-home control (Home Assistant, SmartThings) · 14 · 37%
  • Reliable and dependable, with solid uptime · 8 · 21%
  • Handles almost any HVAC setup (multi-stage, heat pump, humidifier, fan); no C-wire needed · 7 · 18%
  • Affordable and good value for a smart thermostat · 5 · 13%
  • Works fully without internet or Wi-Fi · 4 · 11%
What owners flag
  • Interface and app feel dated; T6 Pro lags newer models · 3 · 8%
  • Can be finicky, with the occasional bad unit · 3 · 8%
  • Temperature and humidity readings can be quirky after configuration · 2 · 5%
  • The Wi-Fi version is noticeably worse than the Z-Wave model · 2 · 5%
Who it's for
A great fit if
  • Home-automation users on Z-Wave or Home Assistant
  • People who want a thermostat that works without wifi or internet
  • HVAC installers wanting broad multi-stage, heat-pump, and C-wire-free compatibility
  • 12V furnace or no-C-wire setups needing local control
Look elsewhere if
  • Buyers wanting a polished touchscreen and app UI like the T10
  • People choosing the WiFi version over the Z-Wave model
  • Anyone unlucky with a finicky or defective unit

Synthesized from what Honeywell Home T6 Pro owners say — not a spec sheet.

How buyers rate it elsewhere

Retailers' own star averages, for comparison — separate from our vetted owner-verdict score above.

Top quotes, sourced

289 reviewed · 77 shown
Sentiment
Community
Sort
YouTube▼ don’t recommend

I have honewellhome app but it doesn’t work.

Reddit▲ recommend

When I logged into hass the next time it said "We found a new homekit device: Thermostat". Please note, I don't do homekit despite having all apple devices. Two clicks and a code read off the screen and I had a thermostat in hass.

Reddit— neutral

I use the Honeywell T6 Pro in my home, but I think it is obsolete at this point. The important points are simplicity and reliability.

YouTube▼ don’t recommend

These thermostats are absolute junk

Reddit▲ recommend

I've had great experience with my Honeywell T6 Pro (Z-Wave). Pros: - It works 100% without internet / wifi - You can still expose it to the internet (and Google Home) via Home Assistant if you want - It works perfectly fine as a 'dumb' thermostat - Honeywell is a reputable thermostat brand compared to some sketchy brands you find in the 'Smart Thermostat'

Reddit▲ recommend

I'm using two Honeywell T6Pro ZWave and have enjoyed them over the Nest Gen3. The T6 Pro works with single stage, two stage, heat pump, you name it... 4 wire, 5 wire, 6 wire... it's the swiss army knife of local only stats.

YouTube▼ don’t recommend

This system sucks

YouTube▲ recommend

Thank you. I was able to finally program my thermostat

YouTube▼ don’t recommend

The schedule on this thermostat sucks super confusing

Reddit▲ recommend

I have 9 Honeywell T6 Pro Z-wave thermostats, and 2 Nest's for the main floor. I wish I just went with the all Z-wave tbh, I can't even get my second Nest to setup with the app yet

YouTube▼ don’t recommend

I don't want a smart thermostat to create a heating and cooling schedule. I want a standard thermostat thank you.

Reddit▲ recommend

I have door locks (u-bolt), thermostat (honeywell T6 pro z-wave), light switches (zooz), motion sensors (zooz), contact sensors (zooz), smart plugs (zooz) and it's all been working pretty great for me.

YouTube▼ don’t recommend

So at night I wake up in a sweat.

Reddit▲ recommend

But not my Honeywell T6 Pro ZWave thermostats. I consider myself very lucky the installers chose that for their package.

YouTube▼ don’t recommend

it keeps changing the temperature by itself

YouTube▲ recommend

So glad that I found this video and can now set a schedule as we did in our previous home.

YouTube▼ don’t recommend

I hate the programming inputting.

YouTube▼ don’t recommend

This is too much programming unless you hire a professional.

Reddit▲ recommend

Google home and assistant will work with the t6pro smart . That's what I use.

Reddit⚠ product link▲ recommend

It doesn't have inputs for 15 different temp sensors, but it has a pretty smart algorithm where if you tell it what kind of heat you have and how many cycles per hour you want it to do, it'll maintain your temp pretty well by understanding how long it takes for the heat to react and turning on heat before the temp drops.

YouTube▼ don’t recommend

My Honeywell does not say PROG when I hit the menu button. What can be the problem. I am unable to program it

Reddit▲ recommend

Honeywell is pretty much Rosetta stone across the industry. Maybe get a bad one from the batch every 3 years or so, but they are honestly the only residential control I'll install.

YouTube▼ don’t recommend

the MOST impossible torture of any registration I have ever done

Reddit▲ recommend

my thermostat (Honeywell T6 Pro Z-Wave) looks like a normal thermostat. All of my stuff looks like normal stuff, functions like normal stuff, and will always work even if my automation fails.

Showing 124 of 77

Common problems & things to know

Practical notes owners raise — setup, quirks, and issues to watch for. They don't say whether the person likes the product, so they're not counted in the score, but they inform the pros, cons, and who it's for.

Hubitat Communityⓘ good to know

After any configurations are done via the touch screen, the temperature reported spikes 3-4 degrees and then will slowly ramp back down to the real temperature reading.

Hubitat Communityⓘ good to know

When I turned on advanced reporting on my T6 the humidity dithered between 30% and 31% every minute or so.

Redditⓘ good to know

I typically install Bosch systems with Honeywell T6 Pros or the T10. The T10 has the advantage as it can use internet weather for the dual fuel compressor lockouts. The T6 Pro needs a hard wired outdoor temperature sensor. Both have app connectivity, the T10’s interface is better than the T6 Pro.