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on May 17, 2012
I have been using this thermostat for a few weeks and it connects to my network and controls my HVAC well most of the time. The problem is that the battery backup does not work in some of these units. I have now tried four different batteries and have had a new version of the thermostat shipped to me from Amazon. Same problem. The biggest problem with this is that the unit will not function after a power outage until the date & time are reset. This means that if your power goes out while you area way from home, there is no way to turn the hvac system on without getting home to reset the data/time. To make matters worse, Honeywell refuses to provide an technical support, stating that this is not a consumer product and must be installed by a licensed technician. This is really frustrating.
2424 comments148 of 158 people found this helpful. Was this review helpful to you?YesNoReport abuse
on July 28, 2012
Purchased this thermostat through Amazon last month and my HVAC contractor installed it a couple days ago. So far it seems to function as described except that the LCD screen is defective in one corner (which does not seem to affect functionality). I contacted Honeywell support to have the thermostat exchanged since the Amazon 30 day return period expired. They stated this thermostat is NOT for sale to the end user and they will only honor the warranty if purchased through an authorized HVAC professional. The following is the support email I sent and the reply from Honeywell:

I purchased this thermostat through Amazon on June 12 and my contractor installed it yesterday, July 26. It has a defective LCD screen in the lower right hand corner and I would like to exchange the device for a new unit. I cannot go through Amazon because they have a 30 day return policy. Thank you for your help in this matter.

Thank you for contacting Honeywell.

The YTH8320ZW1007 thermostat is designed to be installed by a professional and available through contractors only. We recommend you speaking to a licensed HVAC contractor for replacement. Honeywell does not sell these (professionally installed) products directly to a homeowner, we also recommend you to check with Amazon.

For assistance finding a contractor near you, please use the following[...][...]

Honeywell Customer Care

My thermostat was professionally installed but I made the mistake of buying this product myself online. Honeywell will be useless for support if you purchase this unit through Amazon. In the future, I will steer clear of Honeywell products due to their poor service.

UPDATE: After talking with Amazon customer service they have agreed to exchange the product with a new unit. Amazon customer service is excellent.
11 comment51 of 52 people found this helpful. Was this review helpful to you?YesNoReport abuse
on September 21, 2011
Written Sept 2011

I just replaced my two Honeywell Thermostats with the Honeywell TH8320ZW1007/U Z-Wave Enabled Programmable Thermostat . The old thermostat, a Honeywell TH8321U1006 VisionPRO Universal, had a "more" display that showed humidity and days left to change the filter. The Z-Wave version doesn't have the "more" display. Otherwise they are quite similar. The Z-Wave thermostat base is slightly larger than the older Honeywell unit, so I did have to move the wires from the old base to the new base. The units paired just fine with a Vera 2 controller and I'm accessing the thermostats from my iPhone using iVera. The iPhone display doesn't show the fan status even though I run both HVAC systems with the fans ON all the time.

In my setup I have a Trane 2-stage gas furnace/air conditioner on the bottom 2 floors and a Trane heat pump/emergency electrical heat on the top 2 floors of a townhouse. Installation and programming took about half an hour for each thermostat. Pairing went fast once I figured out the flashing light sequence in the Vera 2 to determine when to tell the thermostat to pair.


Update Oct 20, 2012

I've only had this setup 2 days now, but it is really nice to be able to monitor and control the furnace from the iPhone from anywhere. I'm anxious to add more z-wave devices to the house. These thermostats were my first two z-wave devices. I did download a plug-in that allows the Vera 2 to capture data from a TED 5000 gateway via the IP network in the house. So the integration of the thermostats with the power monitoring device worked well.

These thermostats are wonderful and if you are used to the non-Z-wave Honeywell Thermostats you will really like the Z-Wave version.

I've been running this thermostat for over a year now. It has worked extremely well. The only hassle that has occurred is that the thermostat lost "connectivity" 2 times during the year. Once after a long power outage and another time when I added other z-wave devices. To get the thermostats to "communicate" I had to unplug the thermostat from the base and then plug it back to the base. For some reason the date and time then have to be manually reset. The remaining programming stays. So I still feel this is a really good thermostat, but I've dropped the rating from 5 to 4 stars because the thermostat doesn't attempt to reestablish connectivity without a power cycle and it doesn't keep the date and time with a power cycle.
1010 comments41 of 44 people found this helpful. Was this review helpful to you?YesNoReport abuse
on September 8, 2011
I purchased 3 of these and they work great. I replaced Honeywell touch screen thermostats that looked and operate nearly identical to theses so the operation was something I was familiar with. Linking them up to MiCasa z Wave was simple. I did a full power link to the z wave network and never had to move the MiCasa controller to the thermostats.
I can now look up and control current temperatures for each of the three thermostats from my IPhone, computer and I pad very conveniently.

One thing worthy of knowing... the units have 7 days programing with 4 different setting per day. The 4 daily time settings (time slots) and the temperatures per slot are all adjustable. You can also put the thermostat on permanent hold.

The previous thermostats had provisions where you could hold a temperature for a specified number of days, then it would revert back to its normal cycle. I would use this if I was going to be away from the property for say a week or two and wanted it to return to my desired temperature for my return. My arrival didn't always perfectly coincide but it was close and worked ok. These new thermostats only have permanent holds. No holds for a specified number of days. But now it doesn't matter because I can control it remotely. When the thermostat is NOT in permanent hold, your remote changes last only until the next time slot. If the thermostat is on permanent hold, the remote changes the temperature and keeps it there. It doesn't not get automatically altered by the next time slot setting. This works fine, you just need to know how it works as the book doesn't not adequately describe this.

All in all, a wonderful unit.
1414 comments42 of 47 people found this helpful. Was this review helpful to you?YesNoReport abuse
on May 10, 2013
I bought this z wave thermostat to replace my previous honeywell standard model for use with a Lowe's Iris system.

I have a 1H/1C standard "newer" system.

Inside white box was the thermostat, and the "wire saver"

I thought, of course since I'm replacing a honeywell with a honeywell, the wiring would be identical and piece of cake. Wrong!

I had a 4-wire system, red/white/blue/green.

Installed same color/labels from old to new, wouldn't power up.
Tried testing the battery, nope checked out to 3V.
Spent an hour trying to figure out what was different until I realized the wire saver was required...not just a bonus for some other kind of system.

Saw on Amazon people complain of dead on arrival units... that's EXACTLY how mine appeared. Even tried calling support...

I read the instructions on the wire saver, went to my furnace and removed the cover.

1 white bundle, 4 wires, coming from thermostat
1 brown bundle, 4 wires, only two were actually used
circuit board on the furnace, has 6 connections

I took pictures, and removed all 4 wires from the thermostat.
With a leap of faith, I cut the wire 12" from the end.
Plugged the end from the thermostat into the wire saver end marked "thermostat"
Took the 12" piece of "slack" I cut, and made a bridge from the bottom end of the wire saver and the other end of the wires into the corresponding matching letters on the furnace.
I needed to add a 5th wire from the wire saver to the furnace that previously wasn't there
Taking a picture of the wire saver / wire colors,
Back upstairs I wired the thermostat complete different than previously, but matching the colors/letters to how the other end were installed into the wire saver.

Presto! The unit came on.

I'm not an electrician, but I know how to read directions.

Like other readers, I thought I had a broken unit...
And I thought wow, what a joke.. if they think you need a contractor.
My opinion, to install just the thermostat, piece of cake!
To open the furnace, cut wires, install the wire saver, etc... only moderate skill needed, but I can see why they would recommend a professional because I'd imagine you could do damage if you completely re-wire your furnace incorrectly

It's a great unit, screen is nice, despite the fact I'll use the web to program it.
It works... just follow the instructions!
0Comment9 of 9 people found this helpful. Was this review helpful to you?YesNoReport abuse
on December 29, 2011
I ordered this thermostat a couple of months ago and finally installed it today. I had considered getting the Nest thermostat but I like to set my own program schedule rather than have a device identify my patterns. Our house does not have any predictable patterns. I also want to pursue a Z-Wave network but that is down the road. The primary reason for this thermostat was the ability to program the fan to cycle to recirculate the air in the house. So far so good with the set-up and use of the device. Wiring was a bit tricky as I do not have a 24V Common wire so I used the handy dandy device that came with the kit to wire the thermostat with only 4 wires. I called Honeywell to get some help but they were of little assistance. They suggested I call a licensed HVAC company to install it. No thanks. I did it myself after carefully reading the wiring diagrams and finally figuring it out.
One problem I found is the default setting for System Type should have been 1 heat/1 cool conventional but it was actually set to 2 heat/1 cool with aux heat. This made my A/C and heat come on simultaneously. After changing these settings, all was fine.
So I like the device so far but the instructions were somewhat vague and there are things like Adaptive Intelligent Recovery programmed without telling you what that means.
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on May 4, 2013
I've been using the Honeywell TH8321 touchscreen thermostat for the past 7 years and have been extremely happy with it. The TH8320ZW is pretty much the same thermostat, except Z-Wave enabled. Since my old thermostat had the same wiring, installing the new one was a snap and then I just duplicated the installer settings from the old unit to the new one. The only features missing that I've noticed are the humidity sensor, the air filter change notification, and the ability to set a Hold until a specific time or number of days.

I had no issues adding the TH8321 to my Pulse system. It shows up as an "UNSUPPORTED Z-Wave Thermostat" on the web site, but everything works. The only thing missing from the web site seems to be the ability to put the fan into Circ mode (you can only specify Auto or On).
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on April 23, 2012
I like the features on the thermostat, and it is nice looking. However, I have two of these and had one froze. Took me me some time to get it to work again just by experimentation. What annoys me is Honeywell's crappy service toward its customers. There is no product support, and if you are not a contractor they will not talk to you.

Update 5/30/2012: Had these for a little while now and have not had any more issues. Working just fine. One star off for bad customer support.
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on November 25, 2012
This has a firmware bug. If you set up a local schedule (program) running, then you send a remote command (via Z-wave) the thermostat goes into Hold mode. For example - send a fan on command via Z-wave. This is a bug in the thermostat. 2 stars because it's a perfectly good programmable thermostat, but you can probably get the equivalent T-stat w/o Z-wave for a LOT less.
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on July 27, 2012
Its great to see Z-Wave thermostats go mainstream and offer great features. When I was considering upgrading my existing Z-Wave thermostat, I considered several other "new" thermostats, such as the Nest Learning Thermostat T100577, but I had invested so much in my Z-Wave network I really wanted to stick to that type.

This Honeywell thermostat replaced an older Z-Wave Thermostat I bought several years ago, the Wayne-Dalton WDTC-20 HomeSettings Controls Thermostat. Both units cost about the same money, but the amount of progress made in 3 years is astounding.

Like the Wayne-Dalton Thermostat, I chose to have this Honeywell one installed professionally. Unlike the Wayne-Dalton one, which was almost impossible to install (you can read the reviews to see why), my heating/cooling folks put this on in about 15 minutes.

This what I love about the Honeywell:

- Touchscreen! Nothing, of course, like an iPhone or iPad touch screen, but completely responsive and solid feeling.
- Large screen so easy to read (I chose to keep the backlight on continuously (no timing out)
- Filter reminder, with many options (days running, calendar days, etc).
- Adaptive intelligent recovery
- Ability to have fan run all the day, only when unit is cooling/heating, or at a set interval
- And of course, the Z-Wave function. I'm using 5 year old software - Leviton CCTEP-20W ControlThink ThinkEssentials 2.1 Professional with ThinkStick - but I'm still able to set "normal" and "energy-saving" features for both heating and cooling. The Honeywell is immediately responsive to Z wave commands (the Wayne-Dalton took a few minutes go think about it...)

The one negative is that there are many options, but none of them are available through intuitive menus on the screen. Instead you have to put in specific codes provided by the instruction manual. Clearly, the idea here is to have your installer do the programming for you, but as a gadget freak, I wanted to do all the programming. Once you figure out how to do one, you can do them all. Just don't lose the instruction manual!

In sum, the Honeywell has everything I want, both in terms of a good Thermostat and in terms of a Z-Wave device.
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