For those living in London, whether it’s Wembley, Bromley, Ealing, Poplar, Wandsworth, Kensington, Lambeth, Croydon or elsewhere then this webpage gives a guide to the cost of a new boiler. Depending on the current state of your old system, prices may vary a little but we list examples for central heating installations in London installed by a Gas Safe registered heating installer.
As well as the examples below you can customise your own indicative estimate for London by using out replacement boiler cost online calculator. Prices are from April 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 London is 14,100 kWh per year costing £660.73. Explore how this varies by type of home (opens in separate tab).
Example A: Conventional (heat only) boiler replacement
30kW condensing heat only boiler
Powerflush of 10 radiators to remove sludge and improve heating performance.
Adding magnetic filter to radiator circuit to improve life of boiler and improve heating performance of radiators.
Like for like position in home
Note: Assumes that condensate drain already in place and that gas supply pipe sufficient for 30kW boiler.
| Description | Indicative Price inc VAT |
|---|---|
| 1 x Glow-worm Energy 30kW regular heat only (Minimum warranty subject to conditions: 7 years) | £890.81 |
| 1 x Conventional boiler installation: London | £1,020.00 |
| 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 |
| VAT at 20% | included |
| Total inc VAT | £2,332.80 |
new boiler cost london indicative estimate
Example B: Combination boiler replacement with upgrades to the system
24kW condensing combination boiler
Powerflush of 8 radiators to remove sludge and improve heating performance
Adding two new radiators with Thermostatic Radiator Valves (TRVs). Exact costs will depend on the size/style of radiator and the difficulty of accessing the existing heating pipes).
Adding magnetic filter to radiator circuit to improve life of boiler and improve heating performance of radiators.
Like for like position in home.
Note: Assumes that condensate drain already in place and that gas supply pipe sufficient for 24kW boiler.
| Description | Indicative Price inc VAT |
|---|---|
| 1 x Vaillant ecoTEC pro 24 combi combination (Minimum warranty subject to conditions: 2 years) | £923.00 |
| 1 x Combination boiler installation: London | £1,020.00 |
| 2 x Honeywell VT15 RADIATOR THERMOSTAT VALVE @ £11.66 | £27.98 |
| 2 x Install TRV @ £5.00 | £12.00 |
| 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 | £157.58 |
| 2 x Install standard radiator @ £70.00 | £168.00 |
| VAT at 20% | included |
| Total inc VAT | £2,730.56 |
new boiler cost poplar indicative estimate
Example C: Conventional (heat only) boiler replacement with addition of new radiators
18kW 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 18kW boiler.
| Description | Indicative Price inc VAT |
|---|---|
| 1 x Worcester Bosch Greenstar 18Ri heat only (Minimum warranty subject to conditions: 5 years) | £881.04 |
| 1 x Conventional boiler installation: London | £1,020.00 |
| 4 x Honeywell VT15 RADIATOR THERMOSTAT VALVE @ £11.66 | £55.97 |
| 4 x Install TRV @ £5.00 | £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 | £315.17 |
| 4 x Install standard radiator @ £70.00 | £336.00 |
| VAT at 20% | included |
| Total inc VAT | £3,235.18 |
new boiler cost ealing indicative estimate
Locations covered for new boiler cost in the London area include:
Inner and Outer London including : Barking and Dagenham, Barnet, Bexley, Brent, Brentford, Bromley, Camden, Chelsea, City of London, Croydon, Ealing, Enfield, Fulham, Greenwich, Hackney, Hammersmith, Harrow, Havering, Haringey, Hillingdon, Hounslow, Islington, Kensington, Kingston upon Thames, Lambeth, Lewisham, Merton, Newham, Poplar, Redbridge, Richmond upon Thames, Southwark, Sutton, Teddington, Tower Hamlets, Waltham Forest . Wandsworth, Wembley, City of Westminster
See our example estimates for the East Midlands, East of England, London, South East, Wales, West Midlands
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