| New boiler, typical UK cost fitted | |
|---|---|
| Cost | £2,500 to £4,000 |
| For a like for like combi boiler swap, supply and fitting (Checkatrade, figures last updated October 2026). Moving or changing boiler type costs more. These are UK figures, not Leeds quotes. | |
A new boiler is one of the bigger bills most Leeds homeowners face, and quotes can vary by thousands of pounds. This guide sets out what a new boiler costs in 2026 using two national cost guides, what changes the price, and what to check before you sign a quote.
How much does a new boiler cost?
There is no published price list for boilers in Leeds, so the figures below come from Checkatrade and MyBuilder. They are UK figures. Use them as a budget, then get at least two written quotes from Gas Safe registered engineers.
| Job | Typical UK cost | Source |
|---|---|---|
| Like for like combi boiler swap, supply and fitting | £2,500 to £4,000 | Checkatrade, October 2026 |
| System or conventional boiler to combi, supply and fitting | about £4,000 | Checkatrade, October 2026 |
| New boiler and installation, all types | £3,000 to £15,000 | Checkatrade, October 2026 |
| Boiler only (supply), most types | £500 to £3,500 | MyBuilder, October 2026 |
| Installation labour | £500 to £1,500 | MyBuilder, October 2026 |
The wide top end of the Checkatrade range covers oil, electric and biomass boilers. For a typical gas combi in a Leeds terrace or semi, the like for like figure is the most useful guide.
New boiler prices by type
| Boiler type | Boiler only (MyBuilder) | Typical total fitted (Checkatrade) |
|---|---|---|
| Gas combi boiler | £600 to £2,000 | about £3,000 |
| System boiler | £500 to £2,500 | about £3,000 |
| Conventional (heat only) boiler | £600 to £3,500 | about £3,000 |
| Oil boiler | £1,000 to £3,500 | about £3,300 to £4,000 |
| Electric boiler | £600 to £2,500 | about £3,000 to £4,200 |
Combi boilers heat water on demand and need no tanks, so they suit most smaller Leeds homes such as back to backs, terraces and flats. System boilers use a hot water cylinder and suit homes with two bathrooms. Conventional boilers use a cylinder and a cold water tank in the loft, and are common in older houses.
What else can add to the cost?
| Extra | Typical cost | Source |
|---|---|---|
| Powerflush of the heating system | about £1,000 (Checkatrade); £450 to £800 (MyBuilder) | Checkatrade; MyBuilder |
| Magnetic filter | £60 to £160 plus £50 to £150 fitting (Checkatrade); £100 to £300 (MyBuilder) | Checkatrade; MyBuilder |
| Smart or wireless heating controls | about £150 (Checkatrade); £150 to £300 (MyBuilder) | Checkatrade; MyBuilder |
| Moving the boiler to a new position | about £1,000 labour | Checkatrade |
| New flue | £300 to £600 | MyBuilder |
| New hot water cylinder | £300 to £1,300 | MyBuilder |
| Labour by the day | about £300 (Checkatrade); £300 to £500 (MyBuilder) | Checkatrade; MyBuilder |
Should you repair or replace your boiler?
MyBuilder’s guide suggests looking at the repair history. If repairs have passed about £500 in total, a new boiler often works out better through lower running costs and fewer breakdowns. Age matters too: parts for older boilers get harder to find. A Gas Safe engineer can tell you whether a repair is worth it.
Grants for a new boiler
The government’s Boiler Upgrade Scheme does not pay towards a new gas boiler. According to GOV.UK, it gives £7,500 towards an air source or ground source heat pump, £5,000 towards a biomass boiler and £2,500 towards an air to air heat pump, in England and Wales. Until March 2027 there is an extra £1,500 for heat pumps in homes heated by oil or LPG with no mains gas. Grant rules change, so check the GOV.UK page before you rely on it.
Getting a new boiler fitted in Leeds
- Get two or three quotes. Ask each engineer to visit, not quote over the phone, and to list the boiler model, warranty length, controls, filter and flush separately.
- Check Gas Safe. Every engineer who works on gas must be on the Gas Safe Register. Check the licence number on their ID card.
- Ask about the warranty. Many manufacturers give longer warranties when their own accredited installers fit the boiler and it is serviced every year.
- Ask for the paperwork. You should get a Building Regulations compliance certificate for the new boiler, and the engineer should register it.
For local firms that fit and repair boilers, see our list of plumbers in Leeds. If your boiler keeps breaking down, our plumbers page also covers when repair beats replacement.
Questions people ask
How much does a new combi boiler cost to fit?
Checkatrade puts a like for like combi boiler replacement at about £2,500 to £4,000 for supply and fitting. MyBuilder gives £600 to £2,000 for the combi boiler itself, with labour on top.
How much does it cost to change a system or conventional boiler to a combi?
Checkatrade gives an average of about £4,000 for supply and fitting, because extra pipework is needed and the hot water cylinder and tanks are removed. It usually takes about two days.
Can I get a grant for a new gas boiler?
The government's Boiler Upgrade Scheme does not pay for gas boilers. It gives £7,500 towards an air source or ground source heat pump and £5,000 towards a biomass boiler in England and Wales. Some energy company schemes help people on certain benefits, so check GOV.UK.
How long does it take to fit a new boiler?
A like for like combi swap is often done in a day. Changing boiler type or moving the boiler usually takes about two days.
Does a new boiler need a powerflush?
Not always, but many installers recommend cleaning the system so sludge does not damage the new boiler. Checkatrade puts a powerflush at about £1,000 and MyBuilder at £450 to £800.
Who can fit a new boiler?
Only an engineer on the Gas Safe Register can fit a gas boiler. Check their ID card and licence number on the Gas Safe Register website before work starts.