Honeywell Evohome WiFi Thermostat and 8 TRVs £496.84 @ The Evohomeshop
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Honeywell Evohome WiFi Thermostat and 8 TRVs £496.84 @ The Evohomeshop

94
Found 3rd Jan
The Evo Home Shop are doing a special offer at the moment. Basically you get the Honeywell Evohome Thermostat started pack and 2 boxes of 4 HR92 TRVs. The second box is included free. Price shown includes postage.

This heating setup would then allow you to remotely control 8 radiators. Which if they are in separate rooms gives you 8 zones for your heating. I’ve a 15 TRVS setup in my house as 12 zones and love it.

It isn’t for everyone and the geofencing needs to be done via IFTTT and say Life 360 if there is more than 1 person in the house. Other than that it’s from a true heating manufacturer.

The Evohome shop is a good retailer and pretty quick with responses to queries. They can even provide technical advice.

This kit would be fine for combi boilers. If you need hot water there is another bit you need to buy.

To get this price add the Starter kit and a 4 pack of HR92s and the second will add itself.
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Cheapest I've seen is £175 each for the 3 items here. Good deal.
Brilliant system. Zoning your heating is the only way to go if you want a truly smart home.
Oneday, I just wanna get something cleared up.

I run a combi boiler with rads in 6 rooms (inc bathroom). We have a problem with our thermostat (not a fault) in that the thermostat is in the lounge, which is well insulated and holds the heat for a long time after the heating reaches the desired temp, say 22 degrees.
The issue is, the conservatory has 2 rads in it. Now, when the heating shuts off, whilst the lounge stays warm for ages, the conservatory cools down very quickly and is freezing cold before the lounge temp drops enough for the heating to kick back in to bring it back up to 22 degrees. It might only take 10 mins for that to happen, and for heating to knock off again, which means the rads in the conservatory haven't had long enough to warm it up properly.

I've looked at these before but uncertainty about how they work has made me stall.

If i were to buy these, and fit one to each radiator, am I right in thinking that if I set each rad valve to 22 degrees, that each radiator will knock off independently of each other? So when the lounge knocks off at 22 degrees, it might take 30 mins for the temp to drop enough to kick heating back in, in the meantime, the temp in the conservatory might drop in 10 mins, so the conservatory rads will come back on, whilst the lounge stays off until the temp in there drops enough?



I know what I mean anyway
Original Poster
deeky13 m ago

Oneday, I just wanna get something cleared up.I run a combi boiler with …Oneday, I just wanna get something cleared up.I run a combi boiler with rads in 6 rooms (inc bathroom). We have a problem with our thermostat (not a fault) in that the thermostat is in the lounge, which is well insulated and holds the heat for a long time after the heating reaches the desired temp, say 22 degrees. The issue is, the conservatory has 2 rads in it. Now, when the heating shuts off, whilst the lounge stays warm for ages, the conservatory cools down very quickly and is freezing cold before the lounge temp drops enough for the heating to kick back in to bring it back up to 22 degrees. It might only take 10 mins for that to happen, and for heating to knock off again, which means the rads in the conservatory haven't had long enough to warm it up properly.I've looked at these before but uncertainty about how they work has made me stall. If i were to buy these, and fit one to each radiator, am I right in thinking that if I set each rad valve to 22 degrees, that each radiator will knock off independently of each other? So when the lounge knocks off at 22 degrees, it might take 30 mins for the temp to drop enough to kick heating back in, in the meantime, the temp in the conservatory might drop in 10 mins, so the conservatory rads will come back on, whilst the lounge stays off until the temp in there drops enough? I know what I mean anyway


Let me help you with that

Each TRV and the actual thermostat can call the boiler to turn it on. In this sets case that gives you 9 individual thermometers through out the house.

As each TRV is motorised. It will shut off when it reaches its prescribed temperature. So in your case the living room shuts off at 22 degrees. The conservatory will have its own TRV fitted to each rad, then configured as 1 zone.

If the conservatory drops below 21.5 degrees it will turn the boiler on and warm it up again. While the Livingroom isn’t touched at all. Does that make sense?
Oneday7717 m ago

Let me help you with that Each TRV and the actual thermostat can call …Let me help you with that Each TRV and the actual thermostat can call the boiler to turn it on. In this sets case that gives you 9 individual thermometers through out the house. As each TRV is motorised. It will shut off when it reaches its prescribed temperature. So in your case the living room shuts off at 22 degrees. The conservatory will have its own TRV fitted to each rad, then configured as 1 zone. If the conservatory drops below 21.5 degrees it will turn the boiler on and warm it up again. While the Livingroom isn’t touched at all. Does that make sense?


It makes perfect sense and is exactly what I hoped would be the case.

So, it's gone down from 6 available to 4 available while I've been pondering, so I'd best crack on.

£80 back for the 2 surplus TRVs? Makes it a shade over £400.

I'm on it.



Edit:Says 53 available now, must have just had a delivery
Edited by: "deeky" 3rd Jan
I bought my EvoHome kit from elsewhere, but when I emailed the The EvoHome Shop to buy some adaptors they were great.
If I was doing it all again I'd buy from them for customer service/support alone, but the price makes it a no-brainer.
The system is great, by the way. Anyone with a large house should be considering it.
Amazon.de have sold the base unit bundle and additional TRVs cheaper than the UK previously, might be worth a look. The only difference is that the LCD display on the TRVs is upside down as in other countries they tend to have the TRVs mounted at the top of the radiators rather than the at bottom.

EDIT: A quick search on Amazon.de shows the starter kit (3 TRV+wifi unit) for €225 and an additional 4 TRVs for €210. Total €435 / £387 for 1 less TRV compared to the evohomeshop deal. Saving £109.
Edited by: "iambigred" 3rd Jan
Who would seriously pay 500 quid for this? You might as well just spend more on energy....
What does this mean? ..

"the geofencing needs to be done via IFTTT and say Life 360 if there is more than 1 person in the house"
jameswalker45715 m ago

Who would seriously pay 500 quid for this? You might as well just spend …Who would seriously pay 500 quid for this? You might as well just spend more on energy....


It's not just about energy, it's about efficiency and practicality.

When you set just one or two radiators to heat, they heat up more quickly.

You can set temperatures in different rooms at the touch of a button (or voice via Amazon Echo). My game room is usually the warmest room in the house depending on how many people I have in there or what devices are switched on. This makes it a breeze to keep changing the room temp.

Depending on what time we get up at the weekend, you can have a lie in and ask Amazon Echo to switch on the heating in the en-suite just before you get up.

I fitted it years ago and utilise the full 12 zones and we control this via the app, some IFTTT receipes (such as setting the system to "day off" when I have holidays set in my Google Calender) and multiple Amazon Echos around the house, I wouldn't touch another product after using this.
Anyone with this clarify something for me...

Our kids bedrooms are in the cold half of the house, currently the only thermostat is in the warm half and turns the heating off when the kids rooms are still cold.

Is this clever enough to keep the heating on to warm the kids rooms dispite the warm half of the house already being up to temp?
Edited by: "da_murphster" 3rd Jan
Also, are these diy fit?
jameswalker45728 m ago

Who would seriously pay 500 quid for this? You might as well just spend …Who would seriously pay 500 quid for this? You might as well just spend more on energy....


How else would you address my issues?
Can you please advise. If each radiator you wish to control can be called individually by the homeowner and each uses a mechanical on/off switch do the TRVs have to be installed by a professional (plumber)?

Cheers.
Edited by: "Gopher42" 3rd Jan
Original Poster
jameswalker45738 m ago

Who would seriously pay 500 quid for this? You might as well just spend …Who would seriously pay 500 quid for this? You might as well just spend more on energy....


I spent about £900 on mine. Saved about 20% on my gas bill too over 2 years. So about £300 saving plus additional utility.
Original Poster
Gopher4210 m ago

Can you please advise. If each radiator you wish to control can be …Can you please advise. If each radiator you wish to control can be called individually by the homeowner and each uses a mechanical on/off switch do the TRVs have to be installed by a professional (plumber)? Cheers.


If you have normal TRVs fitted already. Depending on brand they unscrew and these fit on instead. I had Danfoss TRVs and the collar was in the box.
Oneday772 m ago

I spent about £900 on mine. Saved about 20% on my gas bill too over 2 …I spent about £900 on mine. Saved about 20% on my gas bill too over 2 years. So about £300 saving plus additional utility.


Out of interest how big is your house if you don't mind me asking? I'm pretty Scrooge when it comes to heating so I go around turning my TRVs in the rooms I don't use... My wife hates me lol

I've got Hive this is just such a big investment! I'm annoyed Hive don't do TRVs I know they don't because they push their multizonal
Original Poster
da_murphster13 m ago

Also, are these diy fit?


The TRVs easily. The main unit, a competent DIYer could.
Had this fitted just over a year, fantastic for zoning your heating . Easy enough to install the trv but the relay box may be more tricky, I previously had a simpler honeywell cm927 so had relay already fitted..
Original Poster
jameswalker4573 m ago

Out of interest how big is your house if you don't mind me asking? I'm …Out of interest how big is your house if you don't mind me asking? I'm pretty Scrooge when it comes to heating so I go around turning my TRVs in the rooms I don't use... My wife hates me lolI've got Hive this is just such a big investment! I'm annoyed Hive don't do TRVs I know they don't because they push their multizonal


I have 5 bedrooms, 3 main rooms, 3 bath/toilet rooms and 2 halls. 16 radiators in total.
You don’t fit a TRV to one radiator to allow your heating to bleed off heat when the boiler gets a shut down command. Good practice anyway.

Start off with the minimum and you can always add more later.
Edited by: "Oneday77" 3rd Jan
Oneday773 m ago

I have 5 bedrooms, 3 main rooms, 3 bath/toilet rooms and 2 halls. 16 …I have 5 bedrooms, 3 main rooms, 3 bath/toilet rooms and 2 halls. 16 radiators in total. You don’t fit a TRV to one radiator to allow your heating to bleed off heat when the boiler gets a shut down command. Good practice anyway.Start off with the minimum and you can always add more later.


I'm 4 bed detached with a similar amount of Radiators. Whats your thoughts on the price point? Do you think it'll lower anytime soon?

I take it you can schedule your TRVs remotely? So you want a radiator at 20 right now but at night you want it off sort of thing?
Phil-B46 m ago

What does this mean? .."the geofencing needs to be done via IFTTT and say …What does this mean? .."the geofencing needs to be done via IFTTT and say Life 360 if there is more than 1 person in the house"


Geofencing is when you set it up to work upon detection of the wifi signal on your phone, as you leave/arrive home as far as I know. Oneday will put me right if I'm wrong
da_murphster28 m ago

Anyone with this clarify something for me...Our kids bedrooms are in the …Anyone with this clarify something for me...Our kids bedrooms are in the cold half of the house, currently the only thermostat is in the warm half and turns the heating off when the kids rooms are still cold.Is this clever enough to keep the heating on to warm the kids rooms dispite the warm half of the house already being up to temp?


That's the same issue as I have so yes.
Original Poster
jameswalker4576 m ago

I'm 4 bed detached with a similar amount of Radiators. Whats your thoughts …I'm 4 bed detached with a similar amount of Radiators. Whats your thoughts on the price point? Do you think it'll lower anytime soon? I take it you can schedule your TRVs remotely? So you want a radiator at 20 right now but at night you want it off sort of thing?


You can set 6 switch points a day for differ by temperatures. The room I have below has 4 set.
32982137-PLN1z.jpg

As for price. It’s pretty static but this deal is pretty as good as I’ve seen.
jameswalker4577 m ago

I'm 4 bed detached with a similar amount of Radiators. Whats your thoughts …I'm 4 bed detached with a similar amount of Radiators. Whats your thoughts on the price point? Do you think it'll lower anytime soon? I take it you can schedule your TRVs remotely? So you want a radiator at 20 right now but at night you want it off sort of thing?



play.google.com/sto…_GB
Original Poster
deeky2 m ago

That's the same issue as I have so yes.


Think of this as dual zone climate control in your car. Except you can configure 12 zones with enough TRVs.
Our kids rooms are set to 18degrees all night. Downstairs loo 16 to prevent loitering
Oneday772 m ago

Think of this as dual zone climate control in your car. Except you can …Think of this as dual zone climate control in your car. Except you can configure 12 zones with enough TRVs. Our kids rooms are set to 18degrees all night. Downstairs loo 16 to prevent loitering


18 degrees in t'bedroom I wouldn't be loitering in there either

Mind you, you feel the cold more at my age
Out of interest how would this work with gravity hot water? Basically the boiler needs to be on for an hour or so to heat the water tank. Can you just have a setting where all the trvs are off and the boiler set to on?
iambigred1 h, 31 m ago

Amazon.de have sold the base unit bundle and additional TRVs cheaper than …Amazon.de have sold the base unit bundle and additional TRVs cheaper than the UK previously, might be worth a look. The only difference is that the LCD display on the TRVs is upside down as in other countries they tend to have the TRVs mounted at the top of the radiators rather than the at bottom.EDIT: A quick search on Amazon.de shows the starter kit (3 TRV+wifi unit) for €225 and an additional 4 TRVs for €210. Total €435 / £387 for 1 less TRV compared to the evohomeshop deal. Saving £109.


Starter kits don't include the boiler relay box do they? Which is another £70-£80 extra.
deeky2 h, 4 m ago

Oneday, I just wanna get something cleared up.I run a combi boiler with …Oneday, I just wanna get something cleared up.I run a combi boiler with rads in 6 rooms (inc bathroom). We have a problem with our thermostat (not a fault) in that the thermostat is in the lounge, which is well insulated and holds the heat for a long time after the heating reaches the desired temp, say 22 degrees. The issue is, the conservatory has 2 rads in it. Now, when the heating shuts off, whilst the lounge stays warm for ages, the conservatory cools down very quickly and is freezing cold before the lounge temp drops enough for the heating to kick back in to bring it back up to 22 degrees. It might only take 10 mins for that to happen, and for heating to knock off again, which means the rads in the conservatory haven't had long enough to warm it up properly.I've looked at these before but uncertainty about how they work has made me stall. If i were to buy these, and fit one to each radiator, am I right in thinking that if I set each rad valve to 22 degrees, that each radiator will knock off independently of each other? So when the lounge knocks off at 22 degrees, it might take 30 mins for the temp to drop enough to kick heating back in, in the meantime, the temp in the conservatory might drop in 10 mins, so the conservatory rads will come back on, whilst the lounge stays off until the temp in there drops enough? I know what I mean anyway


You could move the thermostat somewhere colder and just fit normal trvs to all the other rads? Not quite as neat as this system but maybe cheaper?
I'd love this as it makes so much sense, but for my 19 radiators, it's going to be expensive.
Oneday772 h, 9 m ago

Each TRV and the actual thermostat can call the boiler to turn it on.


So do I still need a TRV on the lounge radiator if the thermostat is in the lounge?

From Honeywell TRVs FAQ:

The radiator in the room with the room thermostat should not normally have a TRV, but, if it does, keep the TRV on the maximum setting and adjust the room thermostat as explained within the instructions.

So it looks pointless to have one in the lounge then.
Edited by: "deeky" 3rd Jan
SFconvert6 m ago

You could move the thermostat somewhere colder and just fit normal trvs to …You could move the thermostat somewhere colder and just fit normal trvs to all the other rads? Not quite as neat as this system but maybe cheaper?


The thing is I'm lazy and don't want to be messing about opening and closing valves so I think your scenario might have the opposite effect, meaning the lounge would be roasting hot

The difference in cost doesn't bother me much, I've just made a couple of bob on some Echo Shows
Edited by: "deeky" 3rd Jan
Would every radiator need one? I think these would be great for my folks but They have 12 radiators always in use and 5 that are not really on unless someone uses the room.

Not sure what to do. They currently have hive but this I've always thought is better.
Edited by: "germainsophie" 3rd Jan
Thanks OP. I have been after one for a while.
Original Poster
deeky39 m ago

So do I still need a TRV on the lounge radiator if the thermostat is in …So do I still need a TRV on the lounge radiator if the thermostat is in the lounge?From Honeywell TRVs FAQ: The radiator in the room with the room thermostat should not normally have a TRV, but, if it does, keep the TRV on the maximum setting and adjust the room thermostat as explained within the instructions.So it looks pointless to have one in the lounge then.


You need to keep in mind that the room that has a radiator permanently open will always get heat when the boiler is activated.
Our ensuite is the one without a TRV. I use the Thermostat as a thermostat in the kitchen paired to a TRV.
My thinking is if I’m going to permanently heat a room, when the boiler is on, I might as well make it one that stores the heat and minimises heat loss to the system.
Original Poster
germainsophie31 m ago

Would every radiator need one? I think these would be great for my folks …Would every radiator need one? I think these would be great for my folks but They have 12 radiators always in use and 5 that are not really on unless someone uses the room.Not sure what to do. They currently have hive but this I've always thought is better.


No you don’t need one on every radiator. You could put one smart TRV in each room. Even if there are more than a new radiator. That way each room can still call for the boiler to start if the smart TRV senses a temp drop.
Not quite as effective but no reason why it shouldn’t work.
By having a TRV in every room, would this lead to the boiler potentially running more frequently if each TRV calls for heat at different times as individual rooms heat up and cool down?
Oneday7718 m ago

You need to keep in mind that the room that has a radiator permanently …You need to keep in mind that the room that has a radiator permanently open will always get heat when the boiler is activated. Our ensuite is the one without a TRV. I use the Thermostat as a thermostat in the kitchen paired to a TRV. My thinking is if I’m going to permanently heat a room, when the boiler is on, I might as well make it one that stores the heat and minimises heat loss to the system.


Ah, I see. I was just going to leave the existing valve on, permanently opened, as it is now.

Actually, what is the actual point of having a (wall) thermostat at all, if all the rads have their own?
Edited by: "deeky" 3rd Jan
Original Poster
deeky28 m ago

Ah, I see. I was just going to leave the existing valve on, permanently …Ah, I see. I was just going to leave the existing valve on, permanently opened, as it is now. Actually, what is the actual point of having a (wall) thermostat at all, if all the rads have their own?


You can pair multiple TRVs up to make a single zone.
Your TRV May be close to a door or window.
You may have the radiator in a cabinet.

In each case the measured temperature maybe skewed. Either an additional Round thermostat or the main unit can be used to set the zone temp rather than the TRVs.

My kitchen rad is in a cabinet, main unit is used in there.
Livingroom/Dining room is 2 rooms combined. With 3 rads in it, 2 in radiator cabinets. I use an additional round thermostat to control in there. Don’t have to but it also makes it easier for a visitor or baby sitter to control that room.

Also you could use the thermostat in the main room. Even if all other rooms are at their set temp. It could call on the boiler which would the. Heat that room for you.
Edited by: "Oneday77" 3rd Jan
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