Service hub
New Boiler Installation across London
Boiler installation from a directly-employed team, dispatched 24/7. Same fixed pricing, same 30 to 60 minute target response, same 12-month guarantee, every borough.
Specialist guides
Boiler installation: deeper dives
Per-job guides covering scope, pricing, and how we handle the awkward bits.
Symptoms
Signs you should replace rather than repair
Spotting the early signs saves money. Each of these symptoms is a reason to call a qualified engineer before it becomes an emergency.
⚠️ Boiler over 12 years old
Even well-maintained boilers from the early 2010s are now beyond design life. Efficiency drops, parts harder to source, breakdowns more frequent.
⚠️ Multiple repairs in the past 24 months
Repair frequency increases sharply on dying boilers. If you've had 3+ repairs, replacement is usually cheaper across 2 years.
⚠️ Repair quote >50% of replacement cost
Rule of thumb. £700 repair on a 12-year-old boiler vs £2,400 new install? Replace.
⚠️ Boiler won't hold pressure (after multiple fixes)
Often indicates internal corrosion that won't resolve. Replacement timing.
⚠️ Hot water output unable to keep up with demand
Family grown, second bathroom added, old combi can't deliver. System upgrade or larger combi.
⚠️ Energy bills creeping up year on year for the same usage
Heat exchanger fouling, fan slowing, gas valve drift, efficiency loss invisible without FGA testing.
⚠️ Banging, kettling or knocking noises that survived a power flush
Heat exchanger damage from limescale. Replacement of heat exchanger often costs as much as a new boiler.
⚠️ Boiler model on the manufacturer's 'end of life' / 'end of parts' list
Several major manufacturer lines (older Potterton, older Baxi, older Glow-worm) are now parts-restricted. Replace before parts become unobtainable.
How we work
Our boiler installer process.
No surprises, no “I'll need to come back tomorrow”. This is the exact path every boiler installation job follows.
- Free site surveyMeasured heat-loss calculation, gas pressure test, mains-water flow test, flue route assessment. Typically 60–90 minutes on site.
- Recommendation & written quoteSpecific manufacturer and model recommended for your property. Quote breaks down boiler, ancillaries (filter, controls, flue), labour, removal and disposal.
- Booking confirmed with installation dateMost installs scheduled within 1–2 weeks of quote acceptance. We hold stock of major models for fast installs.
- Day of installation, strip out and prepOld boiler isolated, drained and removed. Pipework prepped. Power flush carried out before new boiler is fitted.
- New boiler fitted & commissionedInstallation per manufacturer specification. Flue installed and pressure-tested. Magnetic filter fitted. Inhibitor dosed.
- Smart controls integratedWhere supplied, Hive / Nest / Tado paired and configured. OpenTherm enabled where supported.
- Commissioning & flue gas analysisGas pressure check, FGA, system temperature checks, flow/return balance. All recorded on Benchmark certificate.
- Customer hand-over & controls walk-throughWe don't leave until you're confident operating the new system. Manuals printed and digital copies sent.
- Manufacturer registration & Building Control notificationSubmitted same day. Certificates issued within 30 days.
- Aftercare12-year manufacturer warranty (Worcester Bosch top tier) + our 12-month workmanship guarantee. Annual service required to maintain warranty, we'll remind you.
London context
Boiler installation in London: what makes it different.
Mains gas pressure variability. Inner-London gas pressure is generally good but varies, some Edwardian terraces still have ¾ inch black-iron supply with reduced flow, restricting boiler choice. We measure flow rate before specifying.
Mains water pressure for combi boilers. A combi needs reasonable mains water pressure (1.5+ bar at peak) for full DHW output. Many central London mansion blocks have shared risers with poor peak-time pressure. In these cases we'll specify a system boiler with cylinder rather than combi.
Hard water and scale management. London water hardness destroys combi plate heat exchangers within 5–7 years if untreated. We always specify Sentinel X100 inhibitor + magnetic filter + (in hard-water postcodes) in-line scale reducer or full water softener.
Flue routing in conservation areas. Some conservation areas restrict visible flue terminations on principal elevations. We coordinate flue routing with conservation requirements where applicable.
Need a 24/7 emergency engineer?
30 to 60 minute response across every London borough. Gas Safe registered. 12-month workmanship guarantee.
Borough coverage
Boiler installation in your borough
Every London borough has its own page with local postcodes, scenarios, and pricing. Pick yours below or use the postcode checker on the homepage.
Boiler installation in Barking and Dagenham
Coverage across RM6, RM8, RM9, RM10 and the rest of the borough.
See Barking and Dagenham →Boiler installation in Barnet
Coverage across EN4, EN5, HA8, N2 and the rest of the borough.
See Barnet →Boiler installation in Bexley
Coverage across DA1, DA5, DA6, DA7 and the rest of the borough.
See Bexley →Boiler installation in Brent
Coverage across NW2, NW6, NW9, NW10 and the rest of the borough.
See Brent →Boiler installation in Bromley
Coverage across BR1, BR2, BR3, BR4 and the rest of the borough.
See Bromley →Boiler installation in Camden
Coverage across NW1, NW3, NW5, WC1 and the rest of the borough.
See Camden →Boiler installation in City of London
Coverage across EC1, EC2, EC3, EC4 and the rest of the borough.
See City of London →Boiler installation in Croydon
Coverage across CR0, CR2, CR3, CR4 and the rest of the borough.
See Croydon →Boiler installation in Ealing
Coverage across W3, W5, W7, W13 and the rest of the borough.
See Ealing →Boiler installation in Enfield
Coverage across EN1, EN2, EN3, EN4 and the rest of the borough.
See Enfield →FAQ
Boiler installation: your questions
How fast can a boiler installer reach me?
How does boiler installation pricing work?
Do you charge to come out and look?
Are you Gas Safe registered?
Do you guarantee the work?
Read next
More on boiler installation
Boiler Installation Costs
Boiler Installation Costs: What to Expect Understanding the boiler installation costs involved in replacing or upgrading your home’s heating system is crucial for effective budgeting. Several factors influence the final…
14 May 2026 · 3 min read
Choose Right Boiler
How to Choose the Right Boiler for Your Home Selecting a new boiler can feel like a daunting task. With so many options available, it’s important to understand the key factors involved to ensure you choose the right…
2 May 2026 · 4 min read
Energy Saving Tips
Energy Saving Tips to Reduce Your Bills Are you looking for ways to reduce your energy consumption and lower your bills? With energy prices constantly on the rise, finding effective energy saving tips is more important…
14 Apr 2026 · 3 min read
How much does a new boiler cost in London?
Combi vs system vs heat pump: real London-installed prices, including VAT and warranty terms.
20 Feb 2026 · 8 min read
Need a boiler installer now?
Lines open every hour of every day. An engineer can be on the way to you in the time it takes to get a quote elsewhere.