Boiler Replacement Cost in 2026
Wondering what a new boiler will cost? Here are the transparent price ranges we install across Surrey, Berkshire, Buckinghamshire and West London — by tier, by boiler type, and by what's included. Get an instant estimated quote online in 60 seconds.
BOILER REPLACEMENT PRICE RANGES
Includes the boiler, installation and all parts — final quote confirmed by phone
Standard
from £1,930
Worcester Bosch · Vaillant entry
Mid-Range
£2,100 – £3,400
Vaillant ecoTEC · Worcester Greenstar
Premium
£2,600 – £4,250
Worcester CDi · Viessmann 200-W
What's included in the price
Prices are indicative ranges for a like-for-like combi replacement. Relocating the boiler, converting from system/heat-only to combi, or upgrading radiators adds to the cost — all quoted upfront before any work starts.
WHAT AFFECTS THE PRICE OF A NEW BOILER
Boiler type
Combi, system, or heat-only — and the output (kW) you need for your home. A larger property needs a more powerful boiler, which sits at the higher end of each tier.
Position & relocation
A like-for-like swap in the same position is the most affordable. Moving the boiler to a new location means new flue runs, pipework and sometimes electrical work.
Property size & type
Bedrooms, bathrooms and property type (flat or house) determine the output and type of boiler that's right for your home — and the parts needed.
Budget tier & brand
Standard, mid-range or premium brand. Premium boilers cost more up front but often carry longer warranties and higher efficiency.
WHICH BOILER TYPE IS RIGHT FOR YOUR HOME?
The right boiler depends on your hot water demand and property size. Here's a quick guide to help you think about it before your quote.
Combi boiler
Heats hot water on demand with no cylinder. Ideal for flats and homes with 1–2 bathrooms and moderate hot water use. The most common and affordable replacement.
System boiler
Uses a sealed hot-water cylinder, great for homes with 2+ bathrooms that need strong, simultaneous hot water from multiple taps at once.
Heat-only (regular) boiler
Works with a cold-water tank in the loft and a hot-water cylinder. Usually a like-for-like replacement in older homes with traditional systems.
Not sure which you need?
Our engineers will assess your home, hot water use and radiator count, then recommend the right type and output — with a clear, written quote before any work starts.
CHEAP BOILER QUOTES CAN COST MORE
An unusually cheap boiler quote often cuts corners — no system flush, no magnetic filter, unregistered warranty, or hidden extras that appear after the work starts. Every quote from Urban Suburban Gas includes the boiler, full installation, a magnetic filter, system flush, and a registered manufacturer warranty — with the full price agreed before we begin.
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24/7 across Surrey, Berkshire, Bucks & West London
FREQUENTLY ASKED QUESTIONS
How much does a new combi boiler cost in 2026?
A like-for-like combi replacement starts from around £1,930 for a standard brand, £2,100–£3,400 for mid-range, and £2,600–£4,250 for premium. The final price depends on the boiler, position, and your property.
How much extra does it cost to move a boiler?
Relocating a boiler adds to the cost because of the new flue run, pipework and sometimes electrical work. We'll assess the new position and include it in your written quote upfront — no surprises.
How long does a boiler replacement take?
A straightforward like-for-like combi replacement is usually completed within a day. More complex jobs — relocations or system conversions — can take longer, and we'll confirm timings before we start.
Do you offer finance on boiler replacements?
Get an instant estimated quote online in 60 seconds, then speak to our team about the options available for spreading the cost. Final pricing and finance terms are confirmed by phone before any work begins.
Is a more expensive boiler worth it?
Premium boilers often carry longer manufacturer warranties (up to 10–12 years) and higher efficiency, which can lower your gas bills over time. For a long-term home, the extra up-front cost can pay back in reliability and warranty cover.
GET YOUR INSTANT ESTIMATED QUOTE
Answer a few quick questions about your home and get an estimated boiler replacement quote online in 60 seconds — no obligation. Our Gas Safe Registered (594547) engineers install across Surrey, Berkshire, Buckinghamshire and West London.
See our full transparent pricing page