How Much Is a New Boiler in the UK?

In the UK, a new boiler typically costs between £1,800 and £3,500, including installation. However, the total price can vary significantly depending on the type of boiler, your home setup, and who you hire for the job.

Here’s a general guide:

What Affects the Cost of a New Boiler?

1. Boiler Type and Brand

Combi boilers are often cheaper because they’re more compact and don’t need a hot water tank. Premium brands like Worcester Bosch or Vaillant tend to cost more than budget models.

2. Installation Complexity

If your new boiler is a straight swap in the same location, it’s cheaper. If you’re switching boiler types (e.g. system to combi) or relocating the boiler to another room, expect to pay more.

3. Pipework and System Upgrades

Old homes may need new pipework, flushing of the system, or new radiators to match modern boilers, which increases the cost.

4. Extras and Add-ons

Smart thermostats (like Hive or Nest), magnetic filters, extended warranties or new flues will add to the final price — but may be worth it for long-term efficiency.

What’s Included in the Price?

A typical boiler replacement quote should include:

• The boiler unit itself

• Professional installation

• Pipework and system flushing (if needed)

• Removal of the old boiler

• Warranty (usually 5–10 years)

• Certification and safety checks

• A new thermostat or controls (sometimes included)

Always get this confirmed in writing before agreeing to the job.

Are There Any Grants or Help Available?

Yes. Depending on your circumstances, you might qualify for help through the Boiler Upgrade Scheme (BUS) or Energy Company Obligation (ECO4), particularly if you're on a low income or replacing an inefficient model.

These schemes can partially or fully fund your boiler replacement — especially if you’re switching to a more efficient or eco-friendly system like a heat pump.

How to Get the Best Price

• Get at least 2–3 quotes from Gas Safe registered engineers

• Check for reviews and qualifications

• Ask about energy efficiency ratings (A-rated boilers save more on bills)

• Don’t be swayed by the cheapest option — reliability matters!

You can also use boiler comparison and quote websites to get a rough idea of cost before committing.

Final Thought

A new boiler in the UK costs between £1,800 and £3,500, depending on the type, complexity of installation, and brand. It’s a big investment, but a more efficient model can save you hundreds on your energy bills over time. Always compare quotes, choose a trusted installer, and check if you’re eligible for financial help or grants.