TRV's on all radiators with combi?

adandem

Hi , we are in the process of getting quotes for a new boiler and a few alterations to our radiators.
We originally Asked for TRV' s to upstairs radiators only.
One or two engineers said we have it have them on all of them?
Any thoughts please?
Many thanks.;)

ValHaller

TRV's on all but one radiator, which should be on permanently and in the room controlled y the room thermostat.

adandem

Thanks for that.
We have a chrome towel radiator and all have said not to have one on there either? Is that correct?

NVRAM

yeah we've got no TRV on our towel radiator either.

As above all radiators bar the one in the room with the thermo

adandem

NVRAM wrote: »

yeah we've got no TRV on our towel radiator either.

As above all radiators bar the one in the room with the thermo

But I'm assuming that can't be TRV free one? Sorry:o

SternMusik

OK, so what if you have a wireless digistat which you carry around the house with you?

I have one of those. Old thermostat used to be in the hallway. Hallway radiator doesn't have a TVR, neither does the bathroom radiator. Digistat spends most of its time in the lounge/dining room, where the rads have TVRs. I keep the TVRs opened (on highest setting) in the room the digistat is in. Seems to work well for me.

Heedtheadvice

The idea is that there needs to be one path that the pump can use when all TRVs installed are closed otherwise the pump cannot circulate the heat. Systems often need to circulate heat for short periods when there is no demand. That can be a towel rail, a bypass circuit, or an open radiator. For all except the bypass circuit the water temperature also needs controlling to prevent burn from the touchable open radiators/towel rails etc.

It is usual to have that 'open' radiator in, say, a hall so that the opening of an outside door affects the thermostat soon and provides heat demand and thus to the radiators quickly to reduce cold periods to a minimum. If the thermostat is in a room that is not subject to rapid cooling when outside doors are opened then temperatures in the home will drop more.

If you put TRVs on all radiators (with a path somewhere as mentioned above) each room can have a good level of independent control. This applies even to the older mechanical only TRVs and you can keep a living room a bit warmer and not heat radiators unnecessarily saving costs. Works even better with Digital TRVs that also control overall heat demand but installation costs are considerably more expensive as are better controls that measure outside temperature, wind speed etc. It can be argued that the extra expense is better spent on insulation!

adandem

Thanks for all your help everyone.
Can I just confirm something please?
My thermostat is in the lounge and there are 2 radiators in there. If we go down the route of no TRV's in room with thermostat, do we leave them off both?There is also a small radiator in the hall but the thermostat isn't there.
As you can tell, I am not very technical!! Really sorry but thanks again.

adandem

Thanks for all your help everyone.
Can I just confirm something please?
My thermostat is in the lounge and there are 2 radiators in there. If we go down the route of no TRV's in room with thermostat, do we leave them off both?There is also a small radiator in the hall but the thermostat isn't there.
As you can tell, I am not very technical!! Really sorry but thanks again.

ValHaller

adandem wrote: »

My thermostat is in the lounge and there are 2 radiators in there. If we go down the route of no TRV's in room with thermostat, do we leave them off both?There is also a small radiator in the hall but the thermostat isn't there.

If the hall has an undersized rad, that is ideal for a thermostat - your heating will not go off because it is boiling in the hall when it is chilly in the rest of the house - but it will ensure that the heating will go off for a while in early autumn and late spring.

With the thermostat in the lounge, then ideally no TRV's on either radiator, although if the lounge is longer and thinner then it does start to behave like 2 separate rooms and it is less of an issue to have a tRV on the rad away from the thermostat.

Some people like to have the thermostat in the main living room rather than an incidental space like a hall, but my preference is TRVs in the main rooms because TRVs act like a volume control rather than a switch. But it does depend on only adjusting them a tiny amount at any one time. If someone gets too hot or too cold and whacks the TRV to one end stop or the other, you might as well not bother - adjusting them by half a numbered division is a big adjustment.

cyclonebri1

ValHaller wrote: »

I


Some people like to have the thermostat in the main living room rather than an incidental space like a hall, but my preference is TRVs in the main rooms because TRVs act like a volume control rather than a switch. But it does depend on only adjusting them a tiny amount at any one time. If someone gets too hot or too cold and whacks the TRV to one end stop or the other, you might as well not bother - adjusting them by half a numbered division is a big adjustment.

I agree, been trying for years to get my flock into the habit of plus or minus a layer or 2 when things gets chilly, rather than muck about with the heating.