🔥 Boiler Replacement Cost UK 2026 Guide
Boiler Replacement Cost UK 2026 Replacing a boiler is one of the biggest home expenses in the UK. As we enter 2026, boiler prices and installation costs remain high due to labour rates, new energy regulations, and rising material costs.
Boiler Replacement Cost UK 2026
This guide covers:
- 2026 boiler replacement prices
- Combi, system & regular boiler costs
- Installation fees
- Labour charges
- Same-day replacement prices
- Government boiler grants (2026)
- Cheapest places to buy boilers
Let’s break it down clearly.
💷 Average Boiler Replacement Cost UK (2026)
Here are the latest typical prices for a full boiler replacement in 2026:
| Boiler Type | Boiler Price | Installation Cost | Total Cost (2026) |
|---|---|---|---|
| Combi Boiler | £800–£1,500 | £700–£1,000 | £1,500–£2,500 |
| System Boiler | £900–£1,800 | £900–£1,300 | £1,800–£3,100 |
| Regular/Conventional Boiler | £900–£1,900 | £1,000–£1,500 | £2,000–£3,400 |
| Electric Boiler | £600–£1,500 | £600–£1,000 | £1,200–£2,500 |
⭐ Average Across UK:
Most households spend £1,800–£2,800 in 2026.
🔄 Boiler Conversion Costs (2026)
If you’re changing boiler type, expect higher prices:
| Conversion Type | Typical Cost (2026) |
|---|---|
| System → Combi | £2,500–£3,500 |
| Regular → Combi | £2,700–£3,800 |
| Back Boiler → Combi | £3,500–£5,000 |
Conversions require extra pipework, flue changes, and labour.
🔧 Labour Costs for Boiler Installation (2026)
Labour is one of the biggest cost factors.
| Task | Cost |
|---|---|
| Boiler installation (standard) | £600–£1,000 |
| Boiler conversion | £1,000–£2,000 |
| Removal of old boiler | £100–£200 |
| New thermostat | £80–£150 |
| Magnetic filter added | £100–£180 |
| Power flush (recommended) | £300–£600 |
Labour is more expensive in:
- London
- Manchester
- Birmingham
Cheaper in:
- Yorkshire
- Wales
- North East England
🏠 Combi Boiler Replacement Cost (2026)
The most popular boiler type in UK homes.
⭐ £1,500–£2,500 total
Includes:
- New combi boiler
- Installation
- Thermostat
- Inhibitor
- Labour
Ideal for: small–medium homes.
🏡 System Boiler Replacement Cost (2026)
⭐ £1,800–£3,100 total
Includes:
- Hot water cylinder
- Pump & tank
- Pipe connections
- Labour
Ideal for: large homes & multiple bathrooms.
🏘️ Regular (Heat-Only) Boiler Replacement Cost (2026)
⭐ £2,000–£3,400 total
Includes:
- Tank + cylinder
- Existing pipe network
- Labour (usually more complex)
⚡ Electric Boiler Replacement Cost (2026)
⭐ £1,200–£2,500 total
Cheap to install but expensive to run long-term.
🔋 High-Efficiency Boiler Brands & Prices (2026)
| Brand | Price Range |
|---|---|
| Worcester Bosch | £1,100–£2,100 |
| Vaillant | £1,000–£1,900 |
| Ideal | £900–£1,600 |
| Baxi | £850–£1,500 |
| Viessmann | £900–£1,800 |
| Glow-worm | £750–£1,300 |
Worcester Bosch & Vaillant remain premium brands in 2026.
🔥 Same-Day Boiler Replacement Cost (2026)
Emergency boiler replacements are more expensive:
⭐ £2,500–£4,500
This includes:
- Call-out charges
- Fast installation
- Premium labour rates
- Higher winter demand
🏛 Boiler Grants & Funding (2026)
✔ Boiler Upgrade Scheme (BUS)
Government incentive (England & Wales):
- £7,500 grant for heat pumps
- Helps reduce overall costs of switching
✔ ECO4 Scheme
Available for certain benefits:
- Free or discounted boiler upgrades
- Home insulation
- Heating improvements
Check eligibility:
💡 Tips to Save Money on Boiler Replacement in 2026
- Compare at least 3 quotes
- Install during summer (cheapest season)
- Choose Ideal or Baxi for value
- Avoid unnecessary add-ons
- Use registered Gas Safe engineers
- Check for grant eligibility
❓ FAQs — Boiler Replacement 2026
How long does boiler installation take?
4–8 hours for straight swap, 1–2 days for conversion.
Is a combi boiler cheaper to run?
Yes, for homes with 1–2 bathrooms.
How long do boilers last in the UK?
12–15 years on average.
Do I need a power flush?
Recommended if your radiators have cold patches.
Is boiler finance available?
Yes, many companies offer 0% APR over 12–24 months.
📌 Conclusion
In 2026, the average cost of replacing a boiler in the UK ranges between:
⭐ £1,500 and £3,000
(depending on type & labour)
Combi boilers remain the most cost-effective choice, while conversions and emergency replacements cost more. Always compare quotes and check for available grants to keep costs down.