A thermostatic radiator valve (TRV) is the valve on one side of a radiator that has numbered options for the desired heat in the room. Most TRVs can be fitted to either the flow or return (Danfoss RAS-C² are bidirectional angle valves) but it is best to fit to the flow when possible. Think of a TRV as an on / off tap allowing water into the radiator on demand. The numbers refer to the heat in the room and when the room temperature drops below the heat setting, the TRV will allow heat to flow through to the radiator to warm the room to the desired temperature.

0 = Off

* = 7°C

1 = 10°C

2 = 15°C

3 = 20°C

4 = 25°C

5 = 30°C

A lockshield valve is the valve fitted on the other side (normally the return side) of the radiator but like the Danfoss RA-FS valves they are also bi-directional.

How much will it cost to fit TRVs (thermostatic radiator valves)?

Replacing valves for TRVs in your home will be dependent on the amount of hours the heating engineer needs to complete the task as well as the cost of the TRVs. A good quality well known brand like Danfoss RAS-C² bidirectional angle valve can set you back £12 with it coming paired with a lockshield for as little as £18 from stores like Screwfix.

A self-balancing TRV, Danfoss RAS-B2 will cost a bit more from £23 as it is a more upmarket specialised TRV.

How much labour costs to fit a TRV

Per

Average cost

Replacing a valve with a TRV

Per hour 

£40

Upgrading for a new pair of TRV and lockshield

Per hour 

£60 

Replacing a valve with a self-balancing valve

Per hour 

£30

Replacing 5x TRVs

Per job

£160

How do TRVs work?

The TRV is fitted to the side of the water flowing into the radiator. The valve will open and close to adjust flow of hot water into the radiator according to the temperature setting it has been set to.

The visible part of the TRV with numbers printed is referred to as the head and this sits on the valve body.  The TRV works by the valve head expanding or contracting depending on the temperature which in turn adjusts the pin of the valve head allowing more or less water to flow through the valve. An expanding valve due to a warmer room, pushes the pin down, allowing for less water flow in to the radiator which will result in less heat coming off the radiator, therefore the room will cool down and once this happens the valve head will no longer expand, releasing pressure from the pin, lifting the pin, for more water to enter the radiator, to warm the radiator and therefore warm the room until again it reaches the desired temperature with the valve body expanding.

TRVs or either wax or liquid models. Liquid TRVs are the modern valves (Danfoss do liquid sensor valves) and react quicker to heat changes than the older wax TRVs.

TRV vs Danfoss Self-balancing TRV

Now that we understand how TRVs work, what is the difference between a TRV and a self-balancing TRV like the Danfoss RAS-B2? Well, the self balancing valve is a 2-in-1 being even more energy efficient than a standard TRV as it acts as a temperature control and an automatic balancing valve.

Standard TRVs only limit the flow of water but Danfoss RAS-B2 have a differential pressure controller and the balance flow pre-setting saves labour costs by quickly and easily doing this on the TRV rather than on the lockshield. 

Do smart TRVs exist?

Some companies like Danfoss do smart electronic radiator thermostats (the Danfoss Eco™) where each individual room thermostatic radiator valve can be controlled via bluetooth on your smartphone in an app. This means even when you are not home, you can set an individual room to your desired heating. These TRVs are also able to be set manually for those moments where that might be easier.

Do I need to drain down my system to fit TRVs?

This depends on how many radiator valves are being changed. If you are wanting to upgrade your home to TRVs and looking to change a few radiator valves for TRVs then it will be easier to drain the water out of the heating system. Do not forget if draining down, when refilled to replenish your system with a central heating inhibitor to keep it protected from rust debris.

If you are replacing a faulty valve on one radiator, then best to change the TRV without draining down the entire system but rather releasing the pressure and draining down that radiator only. A gas engineer will be able to do this for you as it is a standard common job that they are used to doing in most homes due to replacing faulty valves or old leaky valves and upgrading older valves for modern TRVs.

Should I have TRVs on every radiator?

As TRVs can reduce the cost of energy bills, it is worth having them fitted to most rooms in the house to avoid paying for energy to heat rooms that are not used often. There should be one radiator in the home that is on permanently when the heating is switched on, without being heat adjusted by having a TRV attached to it.

Normally, people leave a bathroom radiator / towel rail without a TRV fitted to it or if there is a radiator near the thermostat, better to cleave that off from TRVs because a TRV on a radiator near the thermostat can leave the thermostat getting confused at whether it has reached temperature or not, and this might cause the thermostat to signal to the boiler to stay on longer giving and wasting more heat.


Estimates for common heating engineer jobs;

Job Estimate
Cost to replace a hot water immersion heater £275
Cost to fit underfloor heating £250
Cost to replace a vented hot water cylinder £330
Cost to replace a heating programmer £180
Cost to powerflush a central heating system £500 Visit
New combi or system boiler installation – like for like replacement £500
Cost to install a ground source heat pump £3750
Cost of gas £110.00 per month
Cost to fix a boiler fault error code £85
Cost to replace an unvented hot water cylinder, e.g., Megaflo £305
Cost to fit thermostatic radiator valves (TRVs) £94
Cost to fit smart heating controls £100
Cost to fit a radiator £80
Boiler service cost £90
Boiler repair costs (e.g. pump, diverter valve or heat exchanger) £333
Cost to install an air source heat pump £556
Replacement of a vented system £580

Rates for other trades

Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) cost in the UK
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) cost in the UK (excluding VAT or callout charges)
Location in UKFit Danfoss RAS-C2 thermostatic radiator valves (TRVs) cost
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Aberdeen£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Amber Valley£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Angus£86
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Arun£106
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Ashfield£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Aylesbury Vale£114
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Barnsley£88
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Basildon£108
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Basingstoke & Deane£128
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Bassetlaw£84
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Bath & North East Somerset£96
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Bedford£112
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Belfast£80
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Birmingham£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Blackburn£114
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Blackpool£88
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Bolton£106
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Bournemouth£102
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Bracknell Forest£128
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Bradford£88
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Braintree£104
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Breckland£86
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Bridgend£88
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Brighton£108
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Bristol£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Broadland£102
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Broxtowe£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Bury£106
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Caerphilly£82
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Calderdale£84
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Cambridge£104
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Canterbury£102
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Cardiff£84
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Carmarthenshire£72
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Charnwood£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Chelmsford£104
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Cheltenham£102
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Cherwell£104
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Chester£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Colchester£102
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Conway£78
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Coventry£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Crewe & Nantwich£88
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Dacorum£120
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Derby£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Doncaster£88
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Dover£104
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Dudley£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Dumfries & Galloway£82
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Dundee£96
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near East Ayrshire£86
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near East Devon£82
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near East Dunbartonshire£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near East Hampshire£104
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near East Hertfordshire£114
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near East Lindsey£82
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near East Riding£84
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Eastleigh£102
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Edinburgh£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Elmbridge£130
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Epping Forest£126
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Erewash£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Exeter£86
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Falkirk£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Fife£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Flintshire£88
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Gateshead£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Gedling£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Glasgow£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Gloucester£156
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Guildford£126
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Gwynedd£74
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Halton£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Harrogate£86
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Havant & Waterloo£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Highland£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Horsham£120
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Huntingdonshire£102
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Ipswich£146
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Isle of Wight£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Kings Lynn & West Norfolk£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Kingston-upon-Hull£84
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Kirklees£86
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Knowsley£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Lancaster£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Leeds£86
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Leicester£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Lisburn£80
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Liverpool£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near London£128
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Luton£118
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Macclesfield£88
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Maidstone£104
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Manchester£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Mid Bedfordshire£112
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Mid Sussex£116
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Middlesbrough£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Milton Keynes£114
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Neath Port Talbot£88
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near New Forest£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Newbury£130
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Newcastle-under-Lyme£86
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Newcastle-upon-Tyne£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Newport£82
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near North Ayrshire£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near North East Lincolnshire£82
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near North Hertfordshire£116
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near North Lanarkshire£96
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near North Lincolnshire£86
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near North Somerset£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near North Tyneside£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near North Wiltshire£112
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Northampton£108
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Norwich£100
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Nottingham£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Nuneaton & Bedworth£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Oldham£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Oxford£106
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Pembrokeshire£68
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Perth & Kinross£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Peterborough£100
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Plymouth£82
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Poole£100
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Portsmouth£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Powys£104
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Preston£118
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Reading£128
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Redcar & Cleveland£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Reigate & Banstead£132
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Renfrewshire£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Rhondda, Cynon, Taff£84
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Rochdale£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Rochester-upon-Medway£104
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Rotherham£86
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Salford£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Salisbury£102
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Sandwell£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Scarborough£82
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Scottish Borders£110
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Sefton£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Sevenoaks£118
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Sheffield£88
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Slough£122
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Solihull£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near South Ayrshire£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near South Bedfordshire£112
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near South Cambridgeshire£106
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near South Gloucestershire£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near South Kesteven£96
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near South Lanarkshire£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near South Oxfordshire£114
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near South Somerset£80
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near South Tyneside£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Southampton£100
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Southend-on-Sea£102
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near St Albans£122
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near St Helens£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Stafford£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Stockport£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Stockton-on-Tees£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Stoke-on-Trent£86
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Stratford-on-Avon£102
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Stroud£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Suffolk Coastal£160
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Sunderland£96
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Swale£104
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Swansea£84
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Tameside£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Teignbridge£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Tendring£130
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Test Valley£100
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Thamesdown£110
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Thanet£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near The Wrekin£96
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Thurrock£108
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Torbay£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Trafford£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Vale of Glamorgan£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Vale of White Horse£102
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Vale Royal£86
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Wakefield£88
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Walsall£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Warrington£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Warwick£96
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Waveney£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Waverley£122
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Wealden£110
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near West Lancashire£92
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near West Lothian£102
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near West Wiltshire£112
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Wigan£94
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Windsor & Maidenhead£122
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Wirral£90
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Wokingham£128
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Wolverhampton£96
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Wrexham Maelor£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Wychavon£98
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near Wycombe£126
Fit Danfoss RAS-C2 thermostatic radiator valves (TRVs) near York£86