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Tell us about your home and heating requirements, then we’ll guide the rest of the process.
Expert boiler replacements tailored to your home. Get a fast, free quote and stay warm with reliable heating and hot water all year round.

From quote to installation, we make boiler replacement clear, quick and professionally managed.
Tell us about your home and heating requirements, then we’ll guide the rest of the process.
Choose from high-quality, energy-efficient boilers that suit your property and budget.
Select a convenient date and we’ll send a professional engineer to complete the installation.
Enjoy reliable heating and hot water throughout the year with your brand new boiler.

Enhance your home’s heating infrastructure with a high-performance system designed for efficiency, reliability and long-term comfort.
Upgrade to a smarter system that reduces wasted energy and helps lower your home’s carbon footprint.
Modern boilers are built with the latest technology to help prevent breakdowns and deliver long-term performance.
Enjoy consistent warmth and dependable hot water across your property with a correctly sized system.
Discover the different boiler types available and choose the option that matches your home and hot water needs.
Ideal for small to medium homes, providing heating and hot water directly from the boiler.
Suitable for larger homes that need a steady supply of hot water from a separate cylinder.
Perfect for homes with multiple bathrooms and higher hot water demand.
Gap Project provides practical survey advice, trusted workmanship and professionally managed boiler installation from first quote to handover.
Guide prices only, based on typical UK installations. Your final price is confirmed after a free survey and depends on property type, system size and site conditions.
| Option | Typical cost | What affects it |
|---|---|---|
| Combi boiler swap | £1,900 to £2,800 | Like-for-like replacement in the same position. |
| System boiler with cylinder work | £2,600 to £3,800 | Homes with a hot water cylinder. |
| Boiler relocation or system conversion | from £3,500 | New pipework, flue routing and additional labour. |
A straight swap is usually completed in a day. Moving the boiler or changing system type can take two to three days.
Sizing is based on the number of bathrooms, radiators and your hot water demand, not simply the size of the old boiler.
Manufacturer warranties commonly range from 7 to 10 years, subject to annual servicing by a qualified engineer.
Combis suit homes with one bathroom and no cylinder. System and regular boilers suit higher simultaneous hot water demand.
Yes. Removal, safe disposal and full commissioning and Building Regulations notification are included.
Finance is available for boiler installation, subject to status and credit checks, through our regulated finance partner.
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Learn moreSpeak to Gap Project for a fast, free boiler replacement quote tailored to your property.