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A response from Megaman. "Good evening Costeta, I havnt seen the prototype or manuals for the new system that will be launched in 2015, so please forgive my lack of knowledge at this stage. The initial idea is two incoperate the whole system as one. Ie the home thermostat and boiler...

Bri160356, Look up Heatgenius.co.uk. They also do a wireless TRV system that uses a boiler control. A little more expensive than LightwaveRF kit but gets good reviews.

Hi, the functionality of a communications link between the TRVs and the boiler via a LightwaveRF link and boiler switch are due next year some time. However it's a good question and I've passed it onto MegamanUK.com who are answering all my questions and I'll get back to you when I get an...

But if you have both then set the house thermostat higher than needed and rely on the TRVs to control the heat output from the radiators not the house thermostat controlling the boiler. I agree they conflict.

Bri160356 For what it's worth I agree with you that all you need is TRVs on each radiator and not a house thermostat.

Dan if I keep the temperatures the same the u value is neutral and can base it on floor area.

Try http://lightwaverf.com/product-manuals You just need a link and TRVs

You can get LightwaveRF kit at many places including Maplin

It works out at 3.3 yrs payback which I think is pretty good

Living room - 14.4m2 Dinning room - 10.36m2 Hall - 10.4m2 Kitchen - 10.15m2 Landing - 7m2 Bathroom - 3.24m2 Bed 1 - 11.1m2 Bed 2 - 8.37m2 Bed 3 - 6.07m2 Bed 4 - unheated Heating period Oct - May inclusive Heating schedule pre LightwaveRF TVRs On (all radiators) 6.30am Off 11.00pm...

The total cost is £420. A single LightwaveRF Link at £60. 8No LightwaveRF TRVs at £45 each I based my calculation on 8 months heating a year. My heating bill is £400 a year. I calculated on floor area of rooms in total compared to floor area heated when some radiators switched off and the...

Thanks. I have a well insulated home. I rechecked my calcs and the pay back is 3.3 years.

Thanks for your thoughts JohnD. I will double check my calcs before doing anything.

Yes. Being able to schedule and set the temperature of each radiator individually will save me money in the long run. I estimate the pay back will be about 3 years. I can switch off radiators that are not needed at different times of the day rather than having all the radiators on at once all...

OK thanks, I've checked with the supplier/ manufacturer of the LightwaveRF TRVs and they are adding the functionality of the TRV calling the boiler when the TRV opens or closes next year which should solve the problem.

Hi, sorry to annoy you. I am a novice. I don't see the difference with what I want to achieve to that which bri160356 outlined at the beginning of this post in that we are both using TRVs, leaving the boiler on permanently and not using the house thermostat (bri160356 says the house...

Can I ask you to also look at this post http://www.diynot.com/diy/threads/lightwaverf-trvs.420531/#3265468

Hi, I am thinking of installing LightwaveRF TRVs to individually control the temperature and schedule of my radiators. I also plan to leave the boiler permanently on and not rely on the general house thermostat. How does your suggestion of using the TRVs to control the heat rather than the...

The LightwaveRF system has a boiler switch. I'll find out from the manufacturers if the LightwaveRF TRVs trigger the boiler switch when the TRVs open or close?

The boiler thermostat keeps the boiler off?