Gas Boiler Replacement London
Professional gas boiler replacement across London and the M25. We remove old, inefficient boilers and install new high-efficiency units — commercial and domestic — with Gas Safe registered engineers and same-day response.
Gas Boiler Replacement London — What's Included
UK Gas Plumbers delivers gas boiler replacement london across London and the M25 corridor for commercial and domestic clients. Every job is carried out by a Gas Safe registered engineer.
Commercial & Domestic Gas Boiler Replacement
When a boiler reaches the end of its working life, replacement is usually more cost-effective than repeated repairs. Our Gas Safe registered engineers assess your existing system, calculate the correct heat output for the property, and recommend a high-efficiency replacement that reduces fuel bills and breakdown risk. We replace boilers in offices, schools, restaurants, care homes, blocks of flats and family homes across London.
Our Boiler Replacement Process
Every replacement follows a structured process to guarantee safety, efficiency and compliance.
Survey & Specification
We survey the property, review the existing flue, gas supply and controls, and specify the right boiler for your heat and hot water demand.
Safe Removal
The old boiler is disconnected, drained down and removed from site. All waste is disposed of responsibly.
Installation & Commissioning
The new boiler is installed to manufacturer instructions, Gas Safe registered, Benchmark commissioned and handed over with full documentation.
All Boiler Types & Major Brands
We replace all types of gas boilers including combi, system, regular and commercial wall-hung or floor-standing units. Our engineers work with Worcester Bosch, Vaillant, Ideal, Baxi, Viessmann, Remeha, Potterton Commercial, Hamworthy and more. Whether you need a single domestic combi swap or a multi-boiler commercial cascade, we have the qualifications and experience to deliver.
Related Gas Services
Boiler Installation
New boiler installations for homes & businesses
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Servicing & PPM contracts
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Fast same-day boiler repairs
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Servicing & PPM contracts
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Temporary boiler hire & rental
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Keeping an existing boiler serviced and safe
Learn moreTrusted by 15,000+ Homes & Businesses
UK Gas Plumbers is Gas Safe registered, Checkatrade verified, and fully insured. Every engineer carries valid ID and credentials.
Gas Safe Registered
All engineers hold current Gas Safe registration verified on every job. Registration number available on request.
Checkatrade Verified
Independently verified member with 547+ genuine customer reviews and a 4.9/5 average rating.
Fully Qualified & Insured
Public liability insurance up to £5 million. All work guaranteed with 12-month warranty on parts and labour.
5-Star Google Rating
Consistently rated 5 stars on Google with verified customer reviews for reliability and professionalism.
Commercial Certifications
Qualified for CP42, CP44, CP15, CP16, and CP17 commercial gas safety certifications.
24/7 Emergency Service
Round-the-clock emergency response across London and the M25. Average response time under 60 minutes.
Why choose us
24/7 Emergency Response
Round-the-clock emergency service for homes and businesses. Our Gas Safe engineers respond within 60 minutes across London for boiler breakdowns, gas leaks, and heating emergencies.
Fixed Price Quotes
No hidden costs or surprise charges. We provide transparent, fixed-price quotes for domestic boiler repairs, landlord certificates, and commercial gas installations.
10 Years Expertise
Trusted gas engineers with a decade of experience serving homeowners, landlords, restaurants, hotels, offices, and industrial facilities across London.
Frequently Asked Questions
Get In Touch Today
Need immediate assistance or want to schedule a service? Contact our experienced team of Gas Safe registered engineers for domestic and commercial work.
Emergency Hotline
24/7 Emergency Service
0208 935 5572
Call now for immediate assistance
WhatsApp Support
Quick response via WhatsApp
Email Us
info@ukgasplumbers.com
Service Areas
Central, West, East, North & South London
Surrey, Kent & Essex
Business Hours
Mon-Fri: 8:00 AM - 6:00 PM
Weekend & Emergency: 24/7
Payment Terms
- • Emergency Call-Outs: Full upfront payment for the first hour
- • Quoted Works: Full upfront payment required before work commences
- • Invoice Payment: Due within 14 days of invoice date
Important: Late payment will invalidate the 12-month labour guarantee and warranty claims.View full terms
