Honeywell Home T6 Wired Smart Thermostat - Black - Touchscreen Heating Control with Geofencing, Alexa, Apple & Google - 868 MHZ - Easy Install & App Setup for Combi Boiler & More - CM907 Replacement

That’s what I call thermostat. Easy to install and easy to set up. Perfectly works with Eco 10 Alexa. Resideo app gives a lot options for set up home temperature.

The world of 'smart' house heating controls is huge and confusing - and I include myself in this even though as a Marine Chief Engineer I have worked on high voltage construction vessels that would confuse military experts.The market seems to boil down to two types. The first type is probably the most common which is the type that simply starts and stops your boiler according to the settings along with all the other bells and whistles chucked onto it. The other type is more sophisticated and also relies upon individual radiator controls.Both of these do not entire work for those of us who had a dual zone plus water tank system fitted.There are also other issues of course. If you add up the cost of WIFI rad valves across your house one has to question the bonkers claim that these will save you money. Honestly, even after fitting this I'm 100% certain I will never get back the money I've spent on the miniscule fuel savings.I'll digress here a bit as well. I'm a marine engineer and as such I've worked on VLCC steam ships in my yoof. Steam ships are basically big thermodynamic experiments that use epic amounts of fuel. We would easily burn through 150 tonnes a day, so any saving no matter how small is easily seen and useful. And this is how we do it. Turn the temperature down. No, really. What we did was open up the main steam valves fully. 100% open. This is important because throttling is really inefficient. Then we dropped the main boiler pressure down to match the turbines with the control valve fully open. This is the most efficient way of not using fuel.If you take a house, every time you fit a thermostatic valve you are throttling water and this is inefficient becasue in order to maintain control temperature you need a high water temperature. And heating water is a logarithmic curve. The higher the temperature the more fuel you need un an upward curve. This is why underfloor heating is efficient. A large area with water heated to 36c not the 65c for rads.So what I do is not throttle my rads. Instead I have turned my water temp down to 57c which is above the level required for killing legionnaires but requires significantly less fuel to maintain.Anyway, going back to controls I could not find anything that met my needs exactly because a there are no dual zone + water smart systems.What there is, is this. Becasue basically what all these smart controls come down to is a remote controlled switch and this is just that. A typcial dual zone system consists of a dual zone controller - which simply puts power onto the mechcanical thermostat at set times. This thermostat will then open up the zone valve which will send a signal to the boiler to start.So, if you have a dual zone system, ignore the blurb in the Honeywell instructions, because its about direct boiler control and, well you can't do that immediately.What I did was install this in place of the thermostat in one zone and using the 240v feed to the controller power the hub unit - which the instructions say to mount close to the boiler and which I didn't. I of course played around with this on my bench to make sure I had it right then temp mounted it once I figured the best way to do it. See the pictures.You then set your original controller to 24/7 on for the zone this is controlling. From then on, this smart controller will control the temperature to your settings which you program in. Of course if like me you have got one zone working on this then inevitably you will want to do both and that means another controller. Once I do that I'll rewire the system and remove the original controller complete.Now, the only bugbear I had was setting this onto my wifi network which took me an age. The blurb is not 100% clear and I was getting frustrated. Bottom line is that you have to use your phone/tablet to log onto the Honeywell wifi - then step back using the back button. It is noted but easy to miss so read very carefully the information and carefully check your app. It does work well once you understand it.Anyway, once you are on line you can do the usual. Set up a calendar for on/off, geographic operation which means it will start up or stop depending how close you are to your house and of course allow manual remote control.A quick word about geographical operation. If like me you have a lousy mobile signal at your house you might have fitted a mobile booster that uses your internet. Which also means your location isn't your house, so you have to go and find an actual signal close to your gaff to set that up.Once fitted its a neat system that is easy to use looks smart and allows excellent control.

I’ve been using two of these thermostats for over a year, in a dual zone setup (downstairs and upstairs) and they have been working great.The thermostats have a lot packed in, including the ability to schedule your heating and setup geo-fencing to automatically turn on and off your heating when you leave home. You can only use one or the other, which is a shame as it would be good to have a schedule in place but also the ability to turn off the heating if when you leave and then jump back to the schedule once home. All these controls are setup through the Honeywell Home app, although I prefer to use Apple Home once scheduling has been setup.These thermostats are OpenTherm compatible too, so they’ll modulate your boiler to help save on gas usage. They also have an ‘optimise’ feature, so they’ll measure how long it takes for your home to heat up, so they can start pre-heating to your desired temperature. This basically means if you set your heating to be 20c at 8am, it may turn on at 7am to start warming the house so it’s at the desired temperature by 8. It’s great for those chilly mornings!So the reason I’ve given this 4 stars for now, is I added an extra zone valve to my current setup after adding gas heating to our garage. I purchased an additional thermostat and setup everything. A week after however, it stopped responding in Apple HomeKit and would no longer connect to WiFi. I haven’t had any of these issues with the other two thermostats so I’m hoping this will be solved with a replacement.

The media could not be loaded. Purchased and installed this product to give me and my family a modern and greater control, mainly over our heating system, but water heating schedule too. The wifi thermostat totally replaces our old thermostat and improves the heating schedules massively with the ability to control and modify almost infinitely throughout the day and night, with daily events, 5/2 events, independent events, not only from the unit but from our smartphones, Google assistant and also using ifttt triggers, ie if the temperature drops below -3 outside or snows etc, it can automatically increase the temperature in the house by 2 degrees.Overall, I'm thoroughly impressed with the product, interface, looks, it's flexibility and it's performance.Wiring up was fun, but complicated solely by the fact my house was extended and the cabling to various devices changed colour and was unmarked, I would recommend a professional installer is used unless you have experience and confidence to install yourself as the wiring centre can be very daunting unless you know what all the wires from the boiler, immersion stat, room stat, and 3 way valves are, or you have the ability to identify these via wiring diagrams and testing.

Nice and easy to install. I got an electrician friend to do it mainly because the location for the controller was a bit tight for space and he'd make a better job of it. Took him about 40 minutes. Overall the thermostat looks great and has a nice responsive screen. It has to be connected to the mains electricity which is the only downside really. A rechargeable one would have been better but it's not a major complaint. It seemed to take about a week to 'learn' the heating characteristics of the house. That first week was a little odd with the thermostat not demanding heat when I thought it should have but after 7 or 8 days it has been fine. Works great with Alexa and the app, although that is pretty basic really. Geo-fencing not all that reliable but I put that down to the Google accuracy on my phone more than the app itself, since other geo enabled apps are unreliable too. All in all, very pleased with the purchase.