
Boiler installation
Welcome to Axiom Heat – Your Trusted Boiler Installation Experts
At Axiom Heat, we understand that installing a new boiler is a major investment for London homeowners. Whether you’re upgrading an old system, moving into a new home, or facing an emergency breakdown, choosing the right boiler and installation service is essential.
With years of experience serving customers across London, our Gas Safe registered engineers provide professional, efficient, and hassle-free boiler installation services. In this guide, we’ll walk you through everything you need to know about boiler installation, from choosing the right system to understanding costs and regulations.If you’re ready to upgrade your heating, contact Axiom Heat today for a free consultation!
Why Choose Axiom Heat for Your Boiler Installation in London?
✔ Gas Safe Registered Engineers – All our installers are fully qualified.
✔ Fast & Reliable Service – We aim to complete installations within 24-48 hours.
✔ Competitive Pricing – Transparent pricing with no hidden fees.
✔ Top-Quality Boilers – We install energy-efficient boilers from trusted brands.
✔ Up to 12 Years Warranty – Get peace of mind with our long-term guarantees.
Combi boilers provide instant hot water and heating without the need for a separate tank.
✅ Pros:
- Energy-efficient and cost-effective
- Compact and ideal for flats and small homes
- No need for a separate water tank
❌ Cons:
- May struggle with high water demand
- Not ideal for large households
Installation Process:
- Site assessment and boiler sizing
- Removal of old boiler (if applicable)
- Installation of new combi boiler
- System flushing and water treatment
- Controls setup and system testing

System boilers store hot water in a cylinder, making them ideal for homes with multiple bathrooms.
✅ Pros:
- Provides strong water pressure
- Can supply multiple taps at once
❌ Cons:
- Requires space for a hot water cylinder
- Takes longer to heat water than a combi boiler
Installation Process:
- Assessment of hot water needs and cylinder sizing
- Installation of boiler and hot water cylinder
- Connection to existing pipework or installation of new pipes
- System pressure testing and balancing
- Setup of controls and programmers
System boilers offer scalability, making them suitable for growing families or homes with changing needs.

Conventional (or regular) boilers need both a cold water tank and a hot water cylinder.
✅ Pros:
- Best for homes with high water usage
- Works well with older central heating systems
❌ Cons:
- Takes up more space
- Requires more complex installation
Installation Process:
- Assessment of existing system and property layout
- Installation of boiler and connection to existing tanks
- Upgrade of any outdated components
- System balancing and efficiency optimization
- Setup of controls and thermostats
While conventional boilers require more space for tanks, they offer reliable heating and hot water for larger or older properties.

Electric boilers are an excellent alternative for properties without access to the gas network or in areas with restrictions on gas boiler installations.
Benefits:
- No Gas Connection Required: Ideal for properties off the gas grid.
- Compact and Versatile: Can be installed in various locations due to their small size.
- Quiet Operation: Electric boilers run silently, perfect for open-plan living spaces.
- Eco-Friendly Potential: Can be paired with renewable energy sources like solar PV systems.
Installation Process:
- Assessment of property’s electrical capacity
- Installation of boiler in chosen location
- Connection to electrical supply and existing heating system
- Installation of necessary safety devices
- System testing and control setup
While electric boilers can have higher running costs, they offer a safe and efficient heating solution for many properties.

💡 Not sure which boiler is best for your home? Call Axiom Heat on 020 3769 3973 for expert advice!
How the Boiler Installation Process Works
At Axiom Heat, we make the installation process simple and stress-free.
Step 1: Free Home Assessment
One of our expert engineers will assess your home and recommend the best boiler for your needs.
Step 2: Transparent Quote
We provide a fixed-price quote with no hidden charges.
Step 3: Boiler Installation
Our team will:
✔ Safely remove your old boiler
✔ Install your new, energy-efficient system
✔ Test the system to ensure everything runs perfectly
Step 4: Certification & Aftercare
You’ll receive a Gas Safe certificate, warranty details, and tips on keeping your boiler running efficiently.
📞 Ready to book your boiler installation? Call us on 020 3769 3973 today!
Boiler brands we install
At Axion Heat, we pride ourselves on installing only the highest quality boilers from renowned manufacturers. Our selection ensures you’ll find the perfect boiler to meet your needs, whether you’re looking for efficiency, reliability, or cutting-edge technology.
How Much Does Boiler Installation Cost in London?
Boiler installation costs depend on several factors, including the type of boiler and complexity of the job.
Boiler Type | Price Range (Incl. Installation) |
Combi Boiler | £1,500 – £3,000 |
System Boiler | £2,000 – £3,500 |
Conventional Boiler | £2,500 – £4,500 |
💰 Ways to Save:
✔ Government Grants: Check if you qualify for ECO4 or Boiler Upgrade Scheme funding.
✔ Flexible Finance Options: Spread the cost over manageable payments.
✔ Energy-Efficient Boilers: Reduce energy bills with an A-rated boiler.
🚀 Want a free, no-obligation quote? Contact Axiom Heat today!
Considerations for All Boiler Installations
Regardless of the boiler type you choose, there are several important factors to consider:
- Energy Efficiency: Modern boilers are highly efficient, potentially saving you money on energy bills. Look for A-rated models for maximum efficiency.
- Property Size and Hot Water Demand: Ensure your chosen boiler can meet your household’s heating and hot water needs.
- Future-Proofing: Consider potential changes in your household size or energy usage when selecting a boiler.
- Regulatory Compliance: All our installations meet current safety standards and building regulations.
- Maintenance Requirements: Regular servicing is essential for all boiler types to ensure longevity and efficiency.
- Smart Controls: Many modern boilers can be integrated with smart home systems for enhanced control and efficiency.
Boiler Installation Regulations in London
✅ 1. Gas Safe Certification
All boiler installations must be carried out by a Gas Safe registered engineer – it’s the law. Axiom Heat ensures all installations meet the highest safety standards.
✅ 2. Energy Efficiency Requirements
Under the Boiler Plus regulations, all new gas boilers must have:
✔ A minimum efficiency of 92%
✔ Smart controls for better energy management
✅ 3. Planning Permission & Building Regulations
Listed buildings or conservation areas may need approval
Most installations don’t require planning permission
Frequently Asked Questions (FAQ)
1. How long does boiler installation take?
Most installations take 1-2 days, but more complex jobs may take longer.
2. Can I install a boiler myself?
No – only Gas Safe registered engineers can legally install a boiler in the UK.
3. What’s the best boiler for a London flat?
A combi boiler is ideal due to its space-saving design and efficiency.
4. How often should I service my boiler?
Boilers should be serviced once a year to maintain efficiency and safety.
5. Are there grants available for new boilers?
Yes! Schemes like ECO4 and the Boiler Upgrade Scheme help eligible homeowners with the cost.
📞 Got more questions? Call Axiom Heat at 020 3769 3973 – we’re happy to help!
Get Your Boiler Installed by Axiom Heat Today!
At Axiom Heat, we take the stress out of boiler installation. Our expert team provides fast, reliable, and affordable boiler installations across London.
✔ Free Consultation
✔ Gas Safe Certified Installers
✔ Up to 12-Year Warranties
✔ Finance Options Available
📞 Call us today on 020 3769 3973 for your free quote!
🚀 Or visit www.axiomheat.co.uk to book online.