How Much Does a New Boiler Cost?

A Guide to New Boiler Costs

This cost guide contains everything you need to know about new boiler costs. From the price of different boiler types, to how to hire the right heating engineer in your area.

In this cost guide we will talk about:

1. Average new boiler costs
2. Cost of hiring a heating engineer for a new boiler
3. Different boiler types and their costs
4. Cost of replacing vs repairing a boiler
5. Hidden costs when you’re getting a new boiler
6. Find new boiler installers near you on MyBuilder
7. FAQ: Common questions about new boiler costs

Average New Boiler Costs

If you’re struggling with cold winters or surprise repair bills, it might be time to upgrade to a more reliable heating system. Costs typically range from £500–£3,500 for the unit itself, plus installation extras depending on your setup.

In metropolitan areas in the UK like London, prices can be higher, often by 20–30%, due to increased demand and labour costs.

Different boilers come with different price tags:

Boiler type	Average cost
Combi boiler	£600–£2,000
System boiler	£500–£2,500
Conventional boiler	£600–£3,500
Oil boiler	£1,000–£3,500
Electric boiler	£600–£2,500
Biomass boiler	£7,000–£15,000

Don’t forget: It’s essential to weigh the cost against long-term benefits, like energy efficiency and savings on energy bills, when selecting the best boiler for your home.

Cost of Hiring a Heating Engineer for a New Boiler

Hiring a Gas Safe registered heating engineer for a new boiler install typically costs £500–£1,500 in labour across the UK, depending on job complexity, location, and boiler type.

This covers site survey, old boiler removal, pipework adjustments, system flushing, and commissioning.

What influences boiler cost:

• Boiler type: Combi boilers suit most homes; system or regular models add £200–£400 for extra components.
• Job scope: Basic swaps in easy-access spots hit the low end; flue rerouting or power flushing pushes to £1,200+.
• Location: London/South East premiums add 20–30%. Rural areas may include travel fees.
• Extras: Old radiator upgrades or controls like smart thermostats tack on £100–£500.

Once installed, regular maintenance is essential to keep your boiler running efficiently. For a full breakdown of what servicing might cost, visit our boiler service cost guide.

Different Boiler Types and Their Costs

Each boiler type offers distinct advantages, so it’s essential to consider your home’s specific needs and budget when deciding.

Conventional boilers:

Conventional boilers are a popular choice, requiring a hot water cylinder and cold-water storage tank, making them ideal for properties with existing systems. The cost of conventional boilers generally ranges from £600 to £3,500, excluding installation.

Combi boilers:

Combi boilers are popular due to their compact nature and ability to provide hot water on demand without a storage tank. This makes them suitable for homes with limited space.

Combi boiler costs typically fall between £600 and £2,000 for the unit itself. Installation costs are an additional expense, usually depending on the complexity of the installation process.

System boilers:

System boilers are favoured for their efficiency and ability to supply hot water to multiple outlets simultaneously. They are an excellent choice for homes requiring lots of hot water. The cost for system boilers typically ranges from £500 to £2,500.

If you aren’t sure which boiler will suit your home, it’s important to get advice from a boiler installation professional. Post your job on MyBuilder today and ask any questions you may have, then verified heating engineers in your area will get in touch.

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Cost of Replacing vs Repairing a Boiler

Replacing a boiler is a big upfront cost, but repeated repairs on an old one can add up over time. Here’s a quick guide to help you decide.

When to repair:

• Breakdowns are rare and the cost of heating your home stays low.
• Your boiler is newer (under 10 years old) and parts are cheap.

When to replace:

• Repairs top £500.
• Breakdowns happen often.
• Your boiler is over 10 years old.
• A new model would be more efficient, which can lower your energy bills over time.

Review your boiler’s repair history closely. If the bills are stacking up or have passed £500 in total, a reliable new model often pays off through lower energy costs and fewer breakdowns.

If you’re not sure whether to repair or get a new boiler, just post your job on MyBuilder.

Need to replace your thermostat as well as your boiler? Visit our price guide for all thermostat replacement costs.

Hidden Costs When You’re Getting a New Boiler Installed

When planning a boiler replacement, it is easy to overlook potential extra costs that can arise during the process. Understanding these hidden costs can prevent unexpected surprises and ensure that you budget appropriately.

Here’s a list of hidden costs and their implications:

• Labour costs: Hiring installers can add an extra £300–£500 per day, with regional differences affecting prices.
• System power flush: Essential for maintaining heating efficiency, costing £450–£800.
• New hot water cylinder: Might be necessary if upgrading system type, costing between £300–£1,300.
• Magnetic filter: Helps to protect your boiler, costing £100–£300.
• Boiler flue pipe: May need replacement, costing £300–£600.
• Wireless heating controller: Adds convenience but costs £150–£300.

To get a clearer picture of what you might pay for installation, check out our heating engineer cost guide.

Find heating engineers

Find Boiler Installers On MyBuilder

Need a new boiler this winter? Find verified boiler installation professionals on MyBuilder. It only takes a couple of clicks to post your job and compare quotes from new boiler installers near you.

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FAQ: Common Questions About New Boiler Costs

Are there any government incentives or grants available for boiler replacements?

Yes, but support is changing. The Energy Company Obligation (ECO4), which funded boilers for some low-income households, is ending in 2026 with no ECO5 to replace it. From 2027, support is due to move to the government’s Warm Homes Plan, including the council-run Warm Homes: Local Grant. If you’re considering a heat pump instead of a new boiler, the Boiler Upgrade Scheme gives £7,500 towards an air source or ground source heat pump in England and Wales. Check GOV.UK for the latest eligibility rules before you apply.

How often should a boiler be replaced and what signs indicate it’s time for a new one?

Typically, a boiler should be replaced every 10 to 15 years, but this depends on its maintenance, model, and usage. Key signs that indicate it might be time for a replacement include: frequent breakdowns, increasing repair costs, and the boiler not heating your home efficiently.

What are the common challenges faced during boiler replacement?

The common challenges during boiler replacement include finding a reputable installer, ensuring the new boiler meets the needs of your household, and managing the costs associated with the replacement. Installation can also disrupt your home temporarily while work is completed.

How can I choose the right type of boiler for my household needs?

Choosing the right boiler depends on several factors: the size of your home, hot water demand, and energy efficiency preferences. The three main types of boilers are combi, system, and conventional boilers:

• Combi boilers are suitable for smaller homes with lower hot water demands, as they don’t require a separate tank.
• System boilers are ideal for homes with higher hot water needs, as they have a separate cylinder but no tanks.
• Conventional boilers are best for larger, older homes with an existing tank and cylinder setup, or where mains water pressure is low.