How Much Does a New Boiler Cost in Birmingham?
In Birmingham, a like-for-like combi boiler swap costs between £1,999 and £2,899 fitted depending on the model, and converting from an old cylinder system to a combi starts from £2,699, priced in writing after a free survey. Those figures include the boiler, flue, wireless thermostat, magnetic filter, chemicals and Building Regulations notification.
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Free survey and written quote. Combi swaps in the same position from £1,999 fitted (depends on the boiler); conversions to a combi from £2,699. Non-standard work is quoted and agreed before we start.
No travel charge within 10 miles of B20 2JS. Further out, £2 per mile may apply — always agreed before anything is booked. Full price list
Smell gas now? Do not use this form or wait for a reply. Call the National Gas Emergency Service free on 0800 111 999 (24 hours). If you are using a mobile, make the call from outside. Open doors and windows, do not switch electrics on or off, do not smoke or use naked flames, and turn the gas off at the meter if it is safe to do so, unless the meter is in a cellar or basement. Once the supply has been made safe, we can trace and repair the fault.
Fitted prices by model
These are our published prices, not estimates that move at the door.
What changes the price
- Swap or conversion. Reusing existing pipework in the same position is the cheapest job. Removing a cylinder and loft tanks is more work, which is why a conversion starts from £2,699.
- Moving the boiler. A new location means new gas, water, condensate and flue routes. That costs more, and is quoted before we start.
- Gas supply pipe. Older houses frequently have an undersized supply that will not deliver a modern boiler's input. Upgrading the run is common in Victorian terraces.
- System condition. A heavily sludged system needs a power flush from £550 before the warranty is safe.
- Flue routes. Vertical flues, long horizontal runs and plume management kits all add cost.
What should always be included
Compare quotes on what is inside them, not just the headline number. Ours include a horizontal flue, wireless thermostat, magnetic filter, chemical cleanser and inhibitor, removal of the old appliance, warranty registration and Building Regulations notification. A cheaper quote that leaves out the filter and the chemicals is not cheaper — it is the same job with the warranty protection removed.
Is a bigger boiler better?
No. An oversized boiler cycles on and off, wears faster and costs more to run. Output should come from a heat-loss assessment of the property and your hot water demand, checked against the mains flow and pressure at the house, not from counting radiators. Most three-bedroom Birmingham semis are properly served by a 24–30kW combi, not the 35kW that gets sold on the basis that bigger sounds safer.
Warranty is the real long-term number
The Baxi 600 at £2,199 with a 7-year warranty often works out better value than a cheaper unit with 5 years, provided you keep up the annual service. Every one of these warranties is conditional on documented annual servicing — at £95 a year with us, that is the cheapest insurance on a new boiler you will find.
Should you replace at all?
If your boiler is under ten years old and this is its first significant fault, repair is usually the better spend. Past twelve years, on a second or third major part, replacement generally wins. We give both numbers and let you decide.
| Job | Price |
|---|---|
| Baxi / Main Eco Compact — combi swap (5 yr warranty) | £1,999 |
| Worcester Greenstar 1000 — combi swap (5 yr warranty) | £1,999 |
| Baxi 600 — combi swap (7 yr warranty) | £2,199 |
| Worcester Greenstar 4000 — combi swap (10 yr warranty) | £2,699 |
| Vaillant ecoTEC plus — combi swap (10 yr warranty) | £2,699 |
| Worcester Greenstar 8000 — combi swap (10 yr warranty) | £2,899 |
| Conversion to combi (from system/open vent) | from £2,699 |
Written by Saeed Iqbal, the engineer who leads Synergy Gas & Plumbing (Gas Safe registered 594385). Last reviewed August 2026.
What it costs
Updated Sept 2026From £1,999 fitted
Free survey and written quote. Combi swaps in the same position from £1,999 fitted (depends on the boiler); conversions to a combi from £2,699. Non-standard work is quoted and agreed before we start.
No travel charge within 10 miles of B20 2JS. Further out, £2 per mile may apply — always agreed before anything is booked.
Need an engineer?
BirminghamRepair callout, office hours£99
Annual service£95
Landlord CP12£90
Emergency24/7
Answers
Common questions
How much is a new combi boiler fitted in Birmingham?
Between £1,999 and £2,899 for a like-for-like swap, depending on the model. Converting from a cylinder system to a combi starts from £2,699, priced in writing after a free survey.
Are boiler prices different in Birmingham than nationally?
Broadly similar, though labour rates in the West Midlands sit a little below the national average and well below London. Our published prices are the same across Birmingham, Solihull, Walsall, Dudley and Wolverhampton; beyond 10 miles of B20 2JS a travel charge of £2 per mile may apply, agreed before booking.
What size boiler do I need?
Not on radiator count or house size alone. We size from a heat-loss assessment, your hot water demand (bathrooms, and whether two run at once), the measured mains flow and pressure, and what your existing system and shower can work with. A typical three-bedroom semi usually ends up with a 24–30kW combi, but the survey decides. Oversizing costs more to buy and more to run.
Do I need a power flush with a new boiler?
Only if the system is contaminated — but if it is and you skip it, the manufacturer can refuse a warranty claim. We test rather than assume, and every install includes a magnetic filter and inhibitor as standard.
Boiler playing up? Call for a straight answer.
We will tell you honestly when we can get to you, and agree the price before any work goes ahead.