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Great Home

Independent Advice On Improving Your Home

What is the cost of a new boiler in Wales?

For those living in Cardiff, Swansea, Newport, Rhondda, Barry and Cwmbran or elsewhere in Wales this page gives three indicative estimates of the the cost of a replacement central heating boiler. The estimates assumes the use of a Gas Safe registered installer putting in the system to the latest guidelines. Prices will vary depending on the current state of your existing heating system, which generally requires an on-site survey to establish.

Replacement Boiler Cost Calculator

As well as the examples on this page, you can also customise your own indicative estimate for Wales  by using out replacement boiler cost online calculator. Prices are for 2019.

When replacing a boiler, its always worthwhile exploring whether the heat demand from the home can be reduced. The typical gas demand for a home in Wales is 12,200 kWh per year costing £584.73. Explore how this varies by type of home (opens in separate tab).


Example A: Conventional (heat only)  boiler replacement

18kW condensing heat only boiler
Like for like position in home
Note: Assumes that condensate drain already in place and that gas supply pipe sufficient for 18kW boiler.

DescriptionIndicative
Price
inc VAT
1 x Worcester Bosch Greenstar 18Ri heat only (Minimum warranty subject to conditions: 5 years)£881.04
1 x Heat Only boiler installation: Wales£780.00
VAT at 20%included
Total inc VAT£1,661.04
new boiler wrexham indicative estimate

Example B: Combination boiler replacement with upgrades to the system

25kW condensing combination boiler
Powerflush of 6 radiators to remove sludge and improve heating performance
Adding two new radiators with eight Thermostatic Radiator Valves (TRVs). Exact costs will depend on the size/style of radiator and the difficulty of accessing the existing heating pipes).
Magnetic filter to extend boiler life
Like for like position in home
Note: Assumes that condensate drain already in place and that gas supply pipe sufficient for 25kW boiler.

DescriptionIndicative
Price
inc VAT
1 x Worcester Bosch Greenstar 25i combination (Minimum warranty subject to conditions: 5 years)£936.04
1 x Combination boiler installation: Wales£720.00
8 x Honeywell VT15 RADIATOR THERMOSTAT VALVE @ £11.66+VAT£111.94
8 x Install TRV @ £5.00+VAT£48.00
1 x Powerflush labour and materials£300.00
1 x Adey Magnaclean Professional Magnetic Cleaner 22mm£91.99
1 x Install magnetic filtration£30.00
2 x Stelrad Softline Radiators P+ Double Panel Single Convector Rad 1000×600 @ £65.66+VAT£157.58
2 x Install standard radiator @ £70.00+VAT£168.00
VAT at 20%included
Total inc VAT£2,563.55
 new boiler cardiff indicative estimate

Example C: Conventional (heat only)  boiler replacement with addition of new radiators  

30kW condensing heat only boiler.
4 new radiators with TRVs (costs are indicative. Exact costs will depend on the size/style of radiator and the difficulty of accessing the existing heating pipes)
Powerflush of 6 existing radiators to remove sludge and improve heating performance.
Magnetic filter to extend boiler life.
New programmer and wireless room thermostat
Like for like position in home.
Note: Assumes that condensate drain already in place and that gas supply pipe is sufficient for 30kW boiler.

DescriptionIndicative
Price
inc VAT
1 x Ideal Logic Max Heat H30 heat only (Minimum warranty subject to conditions: 10 years)£1,110.00
1 x Heat Only boiler installation: Wales£780.00
4 x Honeywell VT15 RADIATOR THERMOSTAT VALVE @ £11.66+VAT£55.97
4 x Install TRV @ £5.00+VAT£24.00
1 x Honeywell Sundial RF² Pack 2 Wireless Enabled Programmer and Thermostat£151.01
1 x Install Programmer and Thermostat£30.00
1 x Powerflush labour and materials£300.00
1 x Adey Magnaclean Professional Magnetic Cleaner 22mm£91.99
1 x Install magnetic filtration£30.00
4 x Stelrad Softline Radiators P+ Double Panel Single Convector Rad 1000×600 @ £65.66+VAT£315.17
4 x Install standard radiator @ £70.00+VAT£336.00
VAT at 20%included
Total inc VAT£3,224.14
 new boiler swansea indicative estimate

Locations covered for new boiler cost in Wales include:

Caernarfonshire: Caernarfon, Bangor, Conwy, Llandudno, Porthmadog, Pwllheli

Carmarthenshire: Carmarthen, Ammanford, Kidwelly, Llandovery, Llanelli, St Clears

Denbighshire: Ruthin, Abergele, Denbigh, Llangollen, Wrexham

Flintshire: Mold, Connah’s Quay, Buckley, Flint, Holywell, Prestatyn, Rhyl, St Asaph

Glamorgan: Cardiff, Swansea, Barry, Bridgend, Caerphilly, Merthyr Tydfil, Neath, Pontypridd, Port Talbot, Rhondda, Aberdare

Monmouthshire: Monmouth, Newport, Abergavenny, Blackwood, Chepstow, Cwmbran, Tredegar, Pontypool

Pembrokeshire: Pembroke, Fishguard, Haverfordwest, Milford Haven, Tenby, St David’s

Radnorshire: Presteigne, Knighton, Llandrindod Wells, New Radnor, Rhayader

See our example estimates for the East Midlands, East of England, London, South East, Wales, West Midlands

Comments

  1. Jamie Gumery says

    May 20, 2015 at 8:12 pm

    hello

    i wish to have a quotation on upgrading my circa 25 year old system to a more modern efficient system.

    thank you

    Reply

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