Most homeowners ask the same question before anything else: how much is this going to cost me?
It's the right question. And the honest answer is — it depends on your home. But that doesn't mean we can't give you real numbers to work with.
Here's a straightforward breakdown of what a new boiler actually costs in 2026, with nothing hidden.
What Affects the Price of a New Boiler?
Before the numbers, it helps to understand what drives them.
Boiler Type and Installation Complexity
Boiler type — combi, system, or regular. Each suits a different home and carries a different price point. A straight swap for an existing combi in the same location is simpler than moving the boiler to a new position or converting from a regular system.
Boiler Brand and Warranty Differences
Brand and model — a Vaillant ecoTEC or Worcester Bosch Greenstar carries a higher upfront cost than a budget alternative, but the efficiency gains and warranty length usually justify it.
Boiler Prices in Sussex & Surrey
Your location — labour costs vary across the UK. In Sussex and Surrey, expect pricing in line with the south east.
New Boiler Cost in the UK — Real 2026 Figures
| Boiler Type | Supply & Install (Typical Range) |
|---|---|
| Combi Boiler | £1,800 – £3,500 |
| System Boiler | £2,200 – £4,000 |
| Regular / Heat-Only | £2,000 – £3,800 |
At Boilers On-Demand, installations start from £1,699, with most jobs running £2,200 to £3,200 depending on the boiler chosen and the complexity of the job.
These figures include removal of your old boiler, full installation, commissioning, and documentation. No hidden extras.
Is Boiler Finance Available?
Monthly Boiler Finance Options
Yes. Spreading the cost of a new boiler into manageable monthly payments is increasingly common — and for good reason.
We offer flexible finance with deposits from 20% and repayment terms from 3 to 10 years. The boiler doesn't change. The installation doesn't change. Only the way you pay does.
If upfront cost is a concern, ask about finance when you request your quote.
What Cheap Boiler Quotes Usually Miss
Why Transparent Quotes Matter
Be cautious. A quote that looks significantly cheaper than the figures above is usually missing something — the flue, the controls, the power flush, or the real cost of the boiler itself.
Always ask for an itemised quote before committing. What you're quoted should be exactly what you pay.
Is a New Boiler Worth the Cost?
Energy Savings with Modern Boilers
In almost every case, yes. An older boiler running at 60–70% efficiency is quietly adding to your bills every single month. A modern A-rated boiler operates at over 90%.
The Energy Saving Trust estimates upgrading from a G-rated to an A-rated boiler can save the average household up to £490 per year on energy bills. Most installations pay for themselves over time — and a 12-year guarantee means you're protected long after the job is done.
Frequently Asked Questions
- How much does a new boiler cost in the UK in 2026?
- A new boiler in the UK costs between £1,800 and £4,000 installed, depending on the boiler type, brand, and complexity of the installation.
- How much does a combi boiler installation cost?
- A combi boiler installation typically costs between £1,800 and £3,500, including supply, installation, commissioning, and removal of your old boiler.
- Do boiler installation prices include labour?
- Yes. Boilers On-Demand quotes include supply, installation, commissioning, removal of the old boiler, and all documentation. There are no hidden extras.
- Can I finance a new boiler?
- Yes. Boilers On-Demand offers flexible finance with deposits from 20% and repayment terms from 3 to 10 years.
- Is replacing an old boiler worth it?
- Yes. Modern A-rated boilers operate at over 90% efficiency. The Energy Saving Trust estimates upgrading from a G-rated to an A-rated boiler can save the average household up to £490 per year on energy bills.
Get a Clear, Itemised Boiler Quote
We don't do vague estimates. When you request a quote from Boilers On-Demand, you receive a full breakdown — boiler, labour, and any additional work — before anything starts.
Gas Safe registered. 36+ years of experience. Up to 12-year guarantee.