Boiler Installation Cost in London – A Complete 2025 Guide

Boiler Installation Cost in London

When winter arrives, a reliable heating system isn’t a luxury – it’s essential. If your old boiler is failing or you’re fitting one in a new property, understanding the boiler installation cost London helps you plan with confidence.

At London Plumbers, we’re often asked: “How much does it cost to install a boiler in London?” Here’s a clear breakdown based on current 2025 prices, the factors that affect costs, and tips for choosing the right system.

What Is the Average Boiler Installation Cost in London?

The average cost of a boiler installation in London ranges from £1,800 to £3,500. The exact figure depends on:

  • Type of boiler – combi, system, or conventional

  • Output size – larger homes need higher-capacity boilers

  • Brand and efficiency rating – premium, high-efficiency models cost more but save energy long term

  • Additional work required – new pipework or relocation increases costs

Tip: At London Plumbers, we provide clear, itemized quotes so you know exactly where every pound goes.

Boiler Replacement vs. New Boiler Installation

There’s a key difference between simply replacing an old boiler and installing a completely new system:

Boiler Replacement in London

  • Swapping an old unit for a new one in the same location

  • Lower cost because labour and materials are minimal

New Boiler Installation in London

  • Installing a boiler for the first time or converting from one type to another

  • Higher cost due to extra pipework, tank removal, or system upgrades

Types of Boilers and Their Costs

1. Combi Boilers – £1,800 to £2,500 installed

  • Best for: Flats or small homes with limited space

  • Advantages: Heats water on demand, no storage tank required

2. System Boilers – £2,000 to £3,000 installed

  • Best for: Medium to large homes with multiple bathrooms

  • Advantages: Stores hot water in a cylinder for high-demand use

3. Conventional Boilers – £2,500 to £3,500 installed

  • Best for: Older properties or homes with very high water needs

  • Advantages: Works with separate hot and cold water tanks

We install all major brands – from cost-effective options to premium high-efficiency boilers with extended warranties.

Additional Costs to Consider

When planning your boiler installation cost in London, factor in:

  • Power flushing to clear sludge – £300 to £500

  • Smart thermostat installation – £150 to £300

  • Flue replacement or extension – required if old flue is incompatible

  • Boiler relocation – moving your boiler can add £500 to £800

At London Plumbers, we always provide a full cost breakdown upfront – no hidden charges.

Why Choose London Plumbers?

  • Transparent pricing – clear quotes with no hidden extras

  • Gas Safe engineers – fully accredited for safety and compliance

  • Tailored solutions – boilers matched to your property and budget

  • Long-term reliability – quality installation reduces breakdown risk

  • Local expertise – specialists in London flats, houses, and period homes

FAQs About Boiler Installation Cost in London

1. Is it cheaper to repair or replace a boiler?
If your boiler is over 10–15 years old and frequently breaks down, replacement is usually more cost-effective long term.

2. How long does installation take?
Most replacements take one day, while full new installations take two to three days.

3. Can I spread the cost with finance?
Yes – London Plumbers offers flexible finance options to make new boiler installation affordable.

4. How long does a new boiler last?
A professionally installed, well-maintained boiler lasts 10 to 15 years. Regular servicing extends its lifespan.

Get Your Free Boiler Installation Quote in London

Need a boiler replacement in London, or planning a new boiler installation?
Contact London Plumbers today for expert advice, competitive pricing, and peace of mind.

📞 Call +44 7796 345453
🌐 Visit www.londonplumbers.com

With London Plumbers, you’ll get quality service, certified engineers, and a heating engineer London system built to last.

Location: 43 Sunnyside Rd, London W5 5HT, UK

Comments

Post a Comment

Popular posts from this blog

Expert Solutions for Blocked Drains in London – Fast, Reliable, and Affordable

Image
Blocked drains are one of the most common plumbing issues faced by homeowners and businesses in London. Whether it's a slow-draining sink, a foul-smelling shower, or a complete blockage, the problem can escalate quickly if left untreated. At London Plumbers , we specialise in fast and effective drain unblocking in London , offering expert solutions to both domestic and commercial properties. If you're searching for trusted drainage companies in London , you're in the right place. Why Do Drains Get Blocked? There are many reasons your drainage system might be struggling: Hair, grease, and soap buildup in bathroom drains Food particles and oil in kitchen sinks Tree roots or debris in outdoor drainage systems Limescale and hard water residue in pipes Regardless of the cause, a blocked drain in London should never be ignored. The longer it sits, the worse it gets—and the more expensive it may become to fix. Our Drain Unblocking Process We use advanced tools and proven methods ...
Read more

Which Plumbing Company in London Offers Top-Quality Service?

Image
   When a plumbing emergency strikes, time is everything. Whether it’s a burst pipe, blocked drain or leaking toilet, you need a reliable plumbing company in London that responds fast and gets the job done right — the first time. But with so many options online, how do you know who to trust? If you're searching for plumbing services in London , want a team with great reviews, or just Googled " best plumber near me in London ", this blog is for you. We break down what makes a plumbing company truly exceptional — and why London Plumbers stands out as a top choice across the capital. What Makes a Plumbing Company the “Best”? Choosing the best plumbers in London isn’t just about who’s nearest or cheapest. A truly top-quality plumbing service should offer: Fast response times (especially in emergencies) Transparent pricing — no hidden charges Qualified, insured, and experienced engineers Clear communication from first call to finish A wide range of domestic and commercial ...
Read more