WiFi Room Thermostat

WiFi and Wireless are not synonymous terms. Use the latter when researching what's available

From the requirements you go on to discuss, you don't want a WiFi thermostat, just a wireless thermostat.

Ok, I need a Wireless Thermostat, I stand corrected.

The question is otherwise the same.

I have had a Honeywell one for five years and it's worked perfectly. One battery change needed last year. However I am not testing it for range unduly; the transmitter and receiver are only 3 yards apart and have only a door in the signal path. It made a tremendous difference to the heating. Apart from anything else the hysteresis is low. It was the predecessor of this, I think:

Bill

on 11/11/2018, Davey supposed :

The base unit needs to be fitted close to the junction box, though if the original mechanical stat had live + neutral + switch wire to it, it could be mounted there.

Our system was originally wired for an mechanical room stat, in the hall, with the main junction box upstairs, in the airing cupboard. The wireless version (Honeywell) has its base in the airing cupboard and the wireless stat on the hall wall, covering the old stats position. We had no good reason to change it, it works absolutely fine there - especially so, since I added TRV's all round late last winter/ early spring.

Not sure what you mean by socket control. These usually have a unit that replaces the existing thermostat so no re-wire needed.

No, but these are popular. Once you have gone wireless then the extra gunge for SMART isn't expensive to add. You can also put the timing control next to the thermostat so its all in one place.

I think I would try a Hive, but don't buy used, they get locked to the owners account. Not that much more than a decent wireless thermostat.

Dave

These things (Nest/Hive) are evolving to do general Home Automation duties.

Doing my initial search, I found several units that remotely control a receptacle, presumably for use with a stand-alone heater or some-such device. They appear to be similar to a remote control plug socket, but with a remote thermostat instead of a pushbutton remote control. That is not what I want, I need some device of which I can wire the base into the existing Honeywell junction box instead of the current device, and have a remote sensor that I can move easily around the room.

I anticipate having to either rewire a new base into the junction box, or maybe even remove the existing Siemens thermostat and put the new base unit there.

In addition to my response to Bill, I wondered about simply replacing the existing Siemens unit with the new baseplate for a wireless device, but I think it lacks any 230v wiring, which the Honeywell requires. But there may be other suitable units...

Having a Honeywell unit would provide continuity, as the other components are mainly Honeywell.

My component distance is also not onerous; adjacent rooms, and the door is very rarely closed. It is the movability I am looking for.

It looks at a quick glance that there is not much wiring work involved in substituting this, or indeed any similar, unit for what is there currently. The junction box already has Live and Neutral, as well as signal, terminals.

Why actually fit the thermostat/control unit in a permanent location? I've had one for years and for the most part, it lives in the kitchen, but gets taken to other rooms when we might feel the need for more heat, after a while.

I find that my desire for heating varies enormously, depending on what I'm doing.

Ant.

central+heating

I currently use a Horstmann HRFS1 wireless stat. It has a sender unit which replaces your current wired thermostat and the wireless head unit can go a nywhere as long as the two units remain paired. It's been very reliable and I like the 5 daily periods and the 5/2 day settings.

It was bought to replace a Drayton Digistat which had a key failing that wh en the battery went flat (as it often did) it would go into a call for heat mode (so we'd often return to a very hot house) and you couldn't see when the battery was about to go flat.

Nest - single zone, nice looking, does what you want.

HoneyWell EVO - more like the Genius system.

There will be many many more options...

Thanks, but all I want is a wireless replacement for my current system.

That looks interesting, thanks. One review referred to the difficulty of leaving it unattahed to a wall, but another reviewer said he just left it free-standing.

Currently, it's between the Honeywell and the Drayton.

The thermostat part will be movable, but I only have a desire for it to be in one room, just the position in that room needs to be variable.

"I wish to replace my hard-wired Siemens room thermostat "

Do you mean you literally just want a thermostat and you want to keep whatever timer you have?

While replacing, the O/P might want to look at a wireless programmable stat and lose the existing timer (or set it on 24x7) to get worthwhile extra features such as different set temperatures at different times of day, temporary boost etc.

The timer I use is built into the controller next to the boiler, it allows me DHW and CH control, with off/continuous/once/twice options for each. This will remain in place, and is a standard Honeywell unit.

The Siemens thermostat has timing options as well, such as 2 programmable setpoints, and the ability to use either one for each hour of each day. I do not use this facility, I need the thermostat part of it to be movable.