Honeywell Home Aube TH140-28-01-B Hydronic Heating 7-Day Programmable Thermostat,White and Gray

The thermostat works great (bought three). It is quick to install and works on low-voltage and two wire line volt baseboard heaters. Only drawback is the loud click when the thermostat turns on or off but the sound is easy to get used to (so long as it is set to 15 minute intervals instead of 5). The unit is very slim and the faceplate is easy to remove from the wall mount for quick programming of a few side by side. The mounting (all electrical wires are hidden) is only the size of a light switch and would be easy to paint around.Overall very satisfied and shipping was 1 1/2 weeks from US to Canada and well worth the wait.

Easy to install. I looked all over for 120v thermostats with a some what modern look and this is the only one that came up with descent reviews. So far it works great and I'm happy with the look of it. The programming is a bit tricky but I have it set in a room where the family isn't in most of the time so I use it when we are in the room and don't need to program it.

I really like the design and overall functionality of this thermostat, and I bought two. Unfortunately both will be returned due to a serious problem with no workaround. For what is worth, I'm using it on a 120V hydronic system, but the problem I'm facing is completely independent of the type of heating.When the room temperature drops to the thermostat setting, the thermostat turns on (can see the ~ signs on the display) as expected. Within seconds, though, the displayed temperature starts increasing on its own, well before any heat in the room starts having an effect, and increases more than 1F in less than a minute. Inevitably this results in the thermostat shutting off the heat, and cycling very rapidly (especially on an hydronic system, where it takes a long time for the heat under the floor to actually start heating the room). As soon as the thermostat cycles off, the temperature reading is correct again, painting to a clear problem in the circuit.To troubleshoot the problem, I removed the thermostat from the wall, so that it was not connected to anything. Manually increased the setpoint higher than the current temperature, and could see the temperature readout increase rather rapidly. If I manually set again the thermostat to a lower setpoint, the thermostat turns off, and the temperature drops by more than 1F immediately. Clearly it's not a real self-heating problem as I originally feared, probably the relay or the load causing additional heat (since in that case the temperature would drop slowly). You can clearly see the temperature drift each time the processor reads the sensor (like most electronic thermostats, the processor reads the temperature and updates the display every few seconds), and upon turning it off, you can see the display temperature drop more than 1F at the next display refresh. It looks as if the A/D circuit reading the sensor (a NTC thermistor, from that I can tell) gets influenced by the circuit energizing the relay.Since both my units exhibit exactly the same problem, it looks like a design issue for the revision I bought. I also found mentions of the same problem in other online reviews on another site (search for "Baffling Problem, Returning" and TH140). I called Aube support, and after 30 minutes on the phone troubleshooting the problem the technician told me that it's a defective unit, and to return itUnfortunately since both units from Amazon had the same problem, I will need to look for an alternative, but it's difficult to find battery powered line voltage thermostats. Meanwhile these 2 units will be returned to Amazon

Love them!!! First off. No "c" wire needed. Strictly battery. There is no light or added frills so the batteries last forever! Works with 24v zone valves and circulatory pumps at 110v AC. Only 2 wires total needed. Have had 4 of these in my house for over a year. Work great and I've never changed the batteries. Couldn't be happier.

This unit includes a built in relay for controlling pumps or higher power needs.. I have a Taco three zone controller so I'm simply using it for a low voltage circuit.Programming this unit can be a pain since there are four settings per day for every day of the week. Unlike some other units which divide weekday and weekend programs. One other issue is there are only two temperature settings that can be used, one warmer and one cooler. The third setting is for vacation. So, in summary, you can change the temperature four times a day, but you can only choose between two different temperatures.On the other hand this unit (which is white, by the way) is stylish and once you've gotten it programmed it's easy to select warm or cool by pushing only a single button. It also allows you to set an override hold temperature.In summary, I like the unit and I'm hoping to holds up well.

I purchased this thermostat because I am designing a very modern living space and didn't want some ugly dinosaur on the wall. Aesthetically it is just right. I love the cover door for the buttons and the clean asymmetry of the design. The programming and buttons were different than other thermostats I've used and took some getting used to, but now make sense to me. My only complaint is that there are only two set point temperatures available even though it's a seven day programmable thermostat. It's not a huge problem though and should work just fine for most residential or office uses. I would recommend this purchase for anyone looking for a good, basic programmable thermostat for energy savings.

Thermostat is easy to install and program and the instructions are clear and complete. However, it seems odd to me that the unit would not have an "OFF" switch. Every thermostat I have ever had possessed this feature. I suppose I can simulate this function by exploiting the "Vacation" (hold temperature) feature and specifying a very low temperature, but that seems rather "Rube Goldberg-ish" when a simple "OFF" switch would have sufficed. Other than that issue, I am satisfied with the operation of the unit during the current heating season.