Honeywell HCW80 & HC60NG easy replacement recommendations

[Mrs.Doyle]

Hello, my current Honeywells need replacing as all attempts to rectify the failed thermostat and dysfunctional receiver have failed.
I would appreciate recommendations for replacements please. If Honeywell do a replacement, I would prefer to use that, if it costs around £100 or less.
Am happy to do the work myself if it’s just a case of simple rewiring from old receiver into new unit.
Would I need to replace the 3rd element - which is the other unit on the wall which enables programming of the heating and hot water? Yhis is the bit I’m most worried about.
Many thanks.
@ericmark - can you advise please - you are quite close to my location.

 

[CountryFan]

Plenty of options, I would steer clear of Honeywell, imo, they're nowhere as good as they omce were. However, if you do want to stay with them - Lyric T6 iirc for the programmer, T3R for the wireless

 

[ericmark]

I am an electrician not a heating engineer, and the reason I have learnt about heating, is I got it wrong. Had it worked A1, I would have had no interest.

The thermostat you talk about if I have the right one, was designed for a non modulating non condensing boiler.

It used a mark/space as it is called, method of control, where it turned the boiler on/off with an increased off time as it approached and then exceeded the set temperature. The idea was to stop the hysteresis normally associated with on/off controls. But it worked in a single room, any other rooms, took pot luck as to temperature control.

But today most boilers, use a system to gain the latent heat from the flue gases, so that thermostat is worst than the cheapest on/off thermostat, in spite of the high price when it first came out. It did however have a system where if it lost radio link to base, it would close down, cheaper thermostat I have found with wireless versions can cause over heating when they fail.

So step on has to be to look at the boiler it is fitted to, with my old oil boiler it would still work well, but not with a modern gas boiler.

The next is to consider why you want a wall thermostat? I know it may sound daft, but in the main we use the thermostat to turn off the boiler on a warm day, temperature control is done by the TRV heads on the radiators.

Also to have a A1 system often costs too much, so we look at near enough, and my home is near enough now, but not perfect.

£100 will not really buy a good wireless system, wired you can get quite a good system, but cheap wireless tend not to last, so can a thermostat be directly wired to the boiler or motorised valve, I say that as early systems, the thermostat worked the motorised valve, and then the valve works the boiler.

With TRVs the home should not be able to overheat, but it can waste money by switching on/off all the time, so really need more info before I can help much.