Honeywell TH6320ZW2003 T6 Pro Series Z-Wave Stat Thermostat &, Smart Home

I love this thermostat. It's not the fanciest.. it doesn't have some of the bells and whistles of the way more expensive smart thermostats, but it works and works reliably. I've had this thermostat setup with my HomeAssistant Zwave smart home network for a while now and it's been rock solid. There aren't a ton of choices when it comes to Thermostats that run natively on Zwave so I'm glad I found this one.It was a cinch to install and paired easily. It does require a dedicated power line from your heater unit but most modern setups will have this. I do NOT have a modern setup (old house with steam boiler and 2-wire thermostat) but was able to patch a hot wire from the boiler controller to the unit and it works great. You CAN power it by batteries alone if that's your only option but I spent a little time and research online to figure out how to hard wire the power - but you have options.It also looks sleek and unassuming on the wall. Some of these smart thermostats look like mini smartphones, all lit up and colorful but I don't want that in a thermostat - mine blends into the wall easy enough and stays dark (black LCD) until I touch it, which activates a pale blue backlight. The unit also comes with a nice frame plate of the same color plastic- supposedly to cover wire holes from an old thermostat, etc. but I found it looks nice without it and I didn't need to hide any wall damage.It's a great thermostat and I would definitely buy this again.

I just installed the new TH6320ZW2003 thermostat, and (so far, at least!) I'm delighted with it. It looks nice and does what it's supposed to do. Installation was straight forward.I did have to run a new 6 conductor cable and wire it both to the furnace and the thermostat, but that's not very complicated if you understand how it works. Wiring at the thermostat was made easy by the nice push-in, spring clamp termination block.I had no trouble connecting Z-Wave to my Hubitat C7 hub. After downloading a driver, it all worked as expected.As with many connected thermostats, the regular programming (5+2 days; wake, leave, return, sleep) is disabled when you enable Z-Wave. They seem to think you want your hub to become the temperature control system. If that's what you want - fine. But I just wanted a nice, programmable thermostat I could override via Z-Wave for instance when we are out of town. This one provides for that! While the main 5+2 x 4 schedule is disabled when Z-Wave is enabled, a simpler 5+2, wake + sleep schedule can be enabled if you dig thru the menus. That works fine for us. I had to read the manual before I purchased it to be convinced that was the case.Some commenters have complained they received a used device. While the box was slightly dinged, it was clearly still sealed, and the device was new. Others complained that there was another company's logo on the front. I handled it quite a bit during installation, and only noticed the other logo after it was installed and I was admiring it. The logo is quite understated, and unless I was looking for something to complain about, doesn't offend me at all.Another reported worry is that the heat relay sometimes fails closed ("on"), leaving the heat running continuously - a very bad thing. So far, it works fine. If it fails later, I'll update this review. Another is that warranty is only honored if it's installed by a professional (thus the 'Pro' designation). I'm not a contractor, so I'll be on my own if it fails. But at least thanks to the other commenters, I know that.While it may not be a good fit for everyone, overall, it does just what I wanted, and I'm very happy with it.

When I first ordered this they sent me the wrong one, they sent me the WiFi version. I sent it back and reordered this Z-Wave version again and I got it a few days later. This one fully works with Hubitat and it actually has it's own driver in Hubitat. If you are replacing an existing thermostat make sure you take pictures of where the wires are attached to the old one. You will not use all of the terminals and you need to make sure the wires go in the correct place otherwise you could mess up your HVAC. The instructions are fairly detailed and can be confusing if you're not sure what you are doing. I luckily had the instructions for my old one and that helped a lot. I have had this installed on a traditional forced air gas furnace and A/C and now installed it on a heat pump furnace and A/C.It comes with a larger back plate that you can use if needed, I liked the look without the back plate so that's how I installed it. The wires easily push in to place and once I had them there I mounted the base to the wall. The cover flips up to hide the wires. The main unit pushes onto the base. Once that is all done you need to go through the setup on the device and configure everything and boy can you configure EVERYTHING. The instructions also help out in detailing what each function does and the order of them. You need to make sure you configure it for the type of system that you have. Once that is all done you can go through and test each stage of the system to make sure everything is working how it should. After all of that I connected it to my Hubitat and got it setup in there.Overall this is a great thermostat and works well for controlling almost any kind of system and integrates into your smart house. The hardest thing is installing it and figuring out where each wire goes and making sure you have the switches set correctly and the thermostat configured correctly for your system. Make sure you read and reread the instructions for installation. Once you have it installed though it's a breeze to control and set schedules and everything.Pros:Z-WaveFully works in HubitatGreat design (the base where the wires attached and the main unit that snaps onto that)Detailed instructions for installationCons:Installation can be difficult (need to make sure wires are all in the correct places, switches set correctly and thermostat configured for your particular system)