A combi heats water as you use it, with no tank, which suits most smaller homes with one bathroom. If several taps or showers run at once, it can struggle.
New Boiler Installation in Grantham
New boiler installation in Grantham, from a like-for-like combi swap to a full change of system. Ask for a quote and we pass it to a local Gas Safe registered installer.
Compare boiler costs- Tell us what is wrongCall, or pick the problem above and send it
- A Gas Safe engineer calls backOne local engineer who covers your area
- Price agreed, problem fixedYou agree the price before any work starts
Combi, system or heat-only?
System and heat-only boilers store hot water in a cylinder, which suits bigger homes and busy bathrooms. The installer looks at your home and how you use hot water before suggesting one.
Typical 2026 costs and what affects them
Price sheetChecked
| Service | Published price |
|---|---|
| New combi boiler, fittedUK guide, Fantastic Services (2026 rates, outside London) | £1,800 to £3,000 |
A UK cost guide puts a new combi, fitted, at £1,800 to £3,000 outside London at 2026 rates. That is a guide, not a Grantham quote. Moving the boiler, changing system type or new pipework all add to it.
Boiler Service and Repair Costs in Grantham, 2026The Boiler Upgrade Scheme and heat pumps
The government's Boiler Upgrade Scheme pays £7,500 towards an air source or ground source heat pump in England and Wales. It doesn't cover gas or oil boilers, and the installer applies for it on your behalf.
The Boiler Upgrade Scheme and heat pumpsHow long an install takes
Swapping a combi for a new combi in the same place is usually a one-day job. Changing system type or moving the boiler takes longer and means more disruption, and the installer talks you through it before starting.
Boiler Repair in GranthamAreas Covered Around GranthamQuestions people ask
How much is a new boiler in Grantham?
A UK guide puts a fitted combi at £1,800 to £3,000 outside London at 2026 rates. Your price depends on the boiler and how much work the install needs, and the installer quotes after seeing your home.
Do I need a new boiler or a repair?
An engineer can usually tell after one visit. Our Boiler Repair in Grantham page covers what tips it either way.
Is there a grant?
The Boiler Upgrade Scheme, run by Ofgem, gives £7,500 towards a heat pump, not a boiler. Some households on certain benefits can get help through other schemes, so ask the installer.
How long is the warranty?
It depends on the make and model. Most manufacturers ask for the boiler to be registered and serviced every year to keep the warranty valid, so check the terms on your quote.
Thinking about a new boiler? Get a Grantham quote
Call or send your details and a local installer will ring you to arrange a look at your home.
01476 852260