Last Updated on March 19, 2026

New boiler costs in the UK in 2026 range between £2,500 and £4,000, including installation, depending on the boiler type, brand, and complexity of the job. A simple combi replacement is usually the cheapest.

A new A-rated condensing boiler can save up to £500 yearly on fuel bills in England, Scotland, or Wales. It can also make your home more comfortable and reduce carbon and greenhouse emissions. For many households, the problem is not deciding whether a new boiler makes sense, but working out how much the job will really cost once installation, labour, upgrades, and extras are included.

Online price ranges often sound clear at first, yet quotes from installers can vary by thousands of pounds depending on the system you have now, the type you want, and how difficult the installation is. Parts, labour, efficiency rules, and grant schemes continue to affect what homeowners pay in 2026.

Exploring the real cost of a new boiler, including installation prices, labour charges, brand differences, conversion costs, and extra work, can give you a clear idea of what you are likely to pay and what affects the final quote.

Key Takeaways on New Boiler Costs in the UK:

• New boiler costs in the UK usually range from £2,500 to £4,000, including installation for a standard replacement.
• The average cost is around £3,700 when replacing an older boiler with a modern A-rated model in a typical home.
• A simple combi boiler replacement is the cheapest, while system changes or relocations increase the price.
• Labour alone often costs £800 to £2,000, depending on installation time and complexity.
• Changing boiler type can raise new boiler costs to £3,000–£6,000+ due to extra pipework and parts.
• Extra work such as flushing, filters, new controls, or pipe upgrades can add £100 to £1,000+.
• Grants or schemes may reduce new boiler costs for eligible households, especially under ECO4 or local authority support.
• Finance options can spread the cost monthly, but interest may increase the total paid.
• A modern A-rated boiler can save up to £500 per year on energy bills compared with an older, inefficient model.
• Getting several detailed quotes is the best way to find the real cost and avoid hidden charges.

Average New Boiler Costs in the UK (2026)

New boiler costs in the UK usually range from £2,500 to £4,000 for a straightforward replacement, including supply and installation. A simple combi swap often sits at the lower end, while larger systems or complex installs increase the price.

Current installer pricing shows most like-for-like replacements fall within this range when no major pipework or system changes are required. Conversions, relocations, or upgrades can push new boiler costs well beyond £4,000.

Energy efficiency guidance suggests replacing an older gas boiler with a modern A-rated model costs about £3,700 on average, including installation and controls. This reflects a typical upgrade in a standard UK home.

Boiler type remains the biggest factor affecting new boiler costs. Combi boilers usually cost less to install, while system, regular, oil, and electric boilers often require more labour or extra components. Brand choice, installation difficulty, and system changes can all increase the final quote.

The table below shows typical 2026 new boiler costs based on current UK installer pricing.

Boiler type	Boiler only	Installed cost
Combi boiler	£700 – £1,800	£2,500 – £4,000
System boiler	£900 – £2,000	£3,000 – £4,500
Regular boiler	£900 – £2,200	£3,200 – £5,000
Electric boiler	£900 – £2,500	£2,500 – £4,500
Oil boiler	£1,500 – £3,000	£3,500 – £6,000

These figures reflect standard installations. Moving the boiler, changing the type, or upgrading the pipework will increase the cost of a new boiler.

Boiler Installation Costs (Labour Only)

Labour accounts for a large share of new boiler costs in the UK. In many cases, installation work alone costs between £800 and £2,000, depending on the time required and the complexity of the job. A simple like-for-like replacement usually takes one day, while system changes or relocations can take two or more.

Installers charge more when pipework needs altering, tanks must be removed, or the boiler moves to a new location. Properties with poor access, older heating systems, or upgraded gas lines often increase labour time and cost. Work on gas boilers must be completed by a Gas Safe-registered engineer, which affects pricing.

The table below shows typical labour-only boiler installation costs in 2026.

Installation type	Labour cost
Like-for-like combi replacement	£800 – £1,200
System or regular boiler replacement	£1,000 – £1,500
Boiler conversion (tank to combi)	£1,500 – £2,000+
Moving a boiler to a new location	£1,200 – £2,000+
Back boiler removal and replacement	£1,800 – £3,000

Labour costs increase when extra work is required, such as power flushing, pipe upgrades, or fitting new controls. These extras often add several hundred pounds to new boiler costs.

New Boiler Costs by Boiler Type

Boiler type has the biggest impact on new boiler costs. Combi boilers usually cost the least to install, while system and regular boilers cost more because they use cylinders, tanks, or extra pipework. Electric and oil boilers can cost more in some homes due to wiring, fuel storage, or flue requirements.

Choosing the right type depends on the property size, hot-water demand, and the existing heating system. Changing the boiler type often increases installation time, raising total costs.

Combi Boiler Costs

Combi boilers provide heating and hot water without a tank or cylinder. They suit small and medium homes with good water pressure. Installation stays cheaper when replacing an existing combi.

• Combi boiler costs.: £700 – £1,800
• Installed cost: £2,500 – £4,000

System Boiler Costs

System boilers use a hot water cylinder but no cold water tank. They work well in larger homes with higher hot water demand. Installation costs more than a combi because of additional components.

• System boiler costs: £900 – £2,000
• Installed cost: £3,000 – £4,500

Regular (Heat Only) Boiler Costs

Regular boilers work with both a cylinder and a tank. Older homes often use this setup. Replacement costs rise if tanks, pipework, or controls need upgrading.

• Boiler only: £900 – £2,200
• Installed cost: £3,200 – £5,000

Electric Boiler Costs

Electric boilers suit flats, small homes, or properties without gas. Installation can be simple, but running costs are usually higher. Some homes need electrical upgrades.

• Boiler only: £900 – £2,500
• Installed cost: £2,500 – £4,500

Oil Boiler Costs

Oil boilers are common in rural homes without mains gas. Installation costs more because the system needs a storage tank and fuel lines.

• Boiler only: £1,500 – £3,000
• Installed cost: £3,500 – £6,000

Switching from one boiler type to another increases the cost of a new boiler. Conversions often require new pipework, tanks, or controls, which adds labour and materials.

New Boiler Costs by Brand

Brand choice affects new boiler costs more than many homeowners expect. Premium manufacturers charge more upfront, but longer warranties and better efficiency can reduce repair and running costs. Budget brands cost less to buy, though they often include shorter guarantees and fewer features.

Worcester Bosch Boiler Costs

Worcester Bosch boilers sit at the higher end of the market. Installers often recommend them for reliability, long warranties, and strong efficiency ratings. New boiler costs increase when choosing higher output models or extended warranty packages.

Vaillant Boiler Costs

Vaillant boilers cost slightly less than Worcester Bosch in many cases. They offer good efficiency and quiet operation. Installation costs remain similar to other premium brands when the system stays the same.

Viessmann Boiler Costs

Viessmann boilers often provide strong value for performance. Many installers recommend them for modern combi systems. New boiler costs stay competitive, but larger models raise the price.

Ideal Boiler Costs

Ideal boilers sit in the mid-range price bracket. They remain popular for standard combi replacements. New boiler costs stay lower than premium brands, especially in simple installs.

Baxi Boiler Costs

Baxi boilers usually cost less than premium brands but still offer solid reliability. They suit straightforward replacements where homeowners want to keep new boiler costs down.

Alpha Boiler Costs

Alpha boilers are often among the cheapest options. They work well for smaller homes or basic replacements. Lower purchase prices help reduce total new boiler costs, but warranty length may be shorter.

The table below shows typical 2026 price ranges for popular boiler brands in the UK.

Brand	Boiler only	Installed cost	Typical warranty
Worcester Bosch	£1,000 – £2,500	£3,000 – £4,500	5–12 years
Vaillant	£1,000 – £2,400	£3,000 – £4,500	5–10 years
Viessmann	£900 – £2,200	£2,800 – £4,200	5–12 years
Ideal	£800 – £1,800	£2,500 – £4,000	5–10 years
Baxi	£750 – £1,700	£2,500 – £3,800	5–10 years
Alpha	£700 – £1,600	£2,400 – £3,800	3–7 years

Premium brands usually cost more to install because installers often pair them with better filters, controls, and some of the best boiler warranties. Larger homes may need higher output boilers, which also increases new boiler costs.

Choosing the cheapest model does not always give the lowest long-term cost. A more efficient boiler can reduce fuel use and lower yearly heating bills.

Check out our best boiler brands guide for the full rundown, and if you are trying to determine who the best boiler installation company is, check out our Warmzilla and Boxt reviews.

Cost to Move a Boiler

Moving the boiler to a new location increases new boiler costs because installers must reroute pipework, flues, and wiring. A simple move in the same room costs less, but moving the boiler to another floor, loft, or garage can add significant labour time.

Relocation often requires a new flue position and longer pipe runs. Some homes need upgraded gas pipes to meet current safety rules. These changes increase both labour and material costs.

The table below shows typical costs to move a boiler in 2026.

Boiler move type	Extra cost
Move within same room	£300 – £800
Move to another wall	£500 – £1,000
Move to another room	£800 – £1,500
Move to loft or garage	£1,000 – £2,000
Move plus system upgrade	£1,500 – £3,000+

Moving the boiler during replacement usually costs less than relocating it later. Installers can complete the work at the same time, which reduces labour hours.

Cost to Change Boiler Type

Changing boiler type increases the new boiler costs more than a standard replacement. Conversions often require new pipework, different controls, and removal of old tanks or cylinders. Labour time usually increases, which raises the total installation price.

Many homeowners switch to combi boilers to save space and improve efficiency. This type of conversion can cost more at first, but it removes the need for tanks and cylinders. Larger homes sometimes move from a combi to a system or regular boilers to handle higher hot water demand.

The table below shows typical conversion costs in 2026.

Conversion type	Typical cost
Combi to combi (upgrade only)	£2,500 – £4,000
Regular to combi	£3,000 – £4,500
System to combi	£3,000 – £4,500
Combi to system	£3,200 – £4,800
Combi to regular	£3,500 – £5,000
Back boiler to combi	£4,000 – £6,000+

Back boiler replacements cost the most because installers must remove the old unit, upgrade pipework, and fit a completely new heating system. Older homes often need extra work to meet current safety and efficiency standards.

Changing boiler type increases labour time, material costs, and installation complexity, which makes it one of the biggest factors affecting new boiler costs.

Extra Costs That Increase New Boiler Costs

Real installations often require additional parts, safety upgrades, or system improvements. Older heating systems usually need more work to meet current standards, which increases labour time and materials.

Installers often include extra items to protect the boiler, improve efficiency, or meet warranty conditions. These additions can raise the total price, but they often prevent future repairs and help the system run more efficiently.

Powerflush Costs

A powerflush cleans sludge, rust, and debris from the heating system before fitting a new boiler. Installers often recommend this when replacing an older boiler, especially if the system has poor circulation or cold radiators. Dirt left inside the system can damage the new boiler and reduce efficiency.

Most manufacturers require a clean system before installation to keep the warranty valid. Skipping a flush can lead to breakdowns or blocked heat exchangers. Powerflushing takes several hours and uses specialist equipment, which increases labour time.

Typical cost: £300 – £600

Magnetic Filter Costs

A magnetic filter removes metal particles from the heating system and protects the boiler from internal damage. Many installers fit a filter during installation because modern boilers have narrow heat exchangers that block easily.

Manufacturers often require a filter to keep long warranties valid. The filter sits on the pipework near the boiler and needs cleaning during servicing. This small extra cost can help prevent expensive repairs later.

Typical cost: £100 – £200

Smart Thermostat and Controls

New heating controls can increase new boiler costs, but they often improve efficiency and comfort. Modern thermostats allow better temperature control and can reduce fuel use. Smart controls let homeowners manage heating from a phone or schedule heating more accurately.

Some boiler installations need new controls to meet current efficiency rules. Upgrading controls at the same time as the boiler usually costs less than fitting them later.

Typical cost: £150 – £400

New Flue or Flue Extension

A new flue may be needed if the boiler moves, the old flue does not meet current rules, or the existing one cannot be reused. Flue changes are common when switching boiler type or relocating the unit.

Longer flue runs, vertical flues, or roof exits cost more because they take longer to install. Access problems can also increase labour costs, especially if scaffolding is needed.

Typical cost: £150 – £400

Gas Pipe Upgrade Costs

Older homes sometimes have gas pipes that are too small for modern boilers. New high-efficiency boilers often need a stronger gas supply, which means installers must fit larger pipework.

Upgrading gas pipes can take extra time if the pipe run is long or difficult to access. This work must meet safety regulations, which adds to labour costs.

Typical cost: £200 – £500

Condensate Pipe Installation

Condensing boilers produce wastewater that must drain safely through a condensate pipe. Some older systems do not have this pipe, so installers must add one during the replacement.

Long pipe runs, outside routing, or frost protection can increase the cost. This work is required for most modern boilers and cannot be avoided.

Typical cost: £100 – £300

Radiator Replacement Costs

Radiators may need replacing if they are too old, too small, or full of sludge. New boilers often work best with modern radiators that allow better water flow.

Adding radiators increases labour time and material cost, especially if pipework changes are required. Larger homes sometimes upgrade radiators to improve heating performance.

Typical cost: £150 – £350 per radiator

Hot Water Cylinder Replacement

System and regular boilers use a hot water cylinder, which may need replacing during installation. Older cylinders can reduce efficiency or fail to meet current safety rules.

Replacing the cylinder at the same time as the boiler avoids future labour costs. Larger cylinders or high-pressure systems usually cost more to fit.

Typical cost: £400 – £1,000

Scaffolding and Access Costs

Some installations need scaffolding to fit the flue safely. This is common when the boiler sits in a loft, high wall, or difficult location outside the house.

Access problems increase labour time and require extra equipment, which raises the final quote. Not every home needs scaffolding, but when required, it can add a noticeable amount to new boiler costs.

Typical cost: £300 – £1,000

Boiler Grants and Help With New Boiler Costs

Government programmes and energy supplier schemes aim to improve efficiency and lower carbon emissions. Some schemes help with full replacement costs, while others only cover part of the installation. Funding rules change often, so you should check current guidance before applying. The schemes below are the main ones available in 2026.

The Energy Company Obligation (ECO4) Scheme

The ECO4 scheme helps low-income households improve home efficiency. In some cases, the scheme covers most or all new boiler costs if the existing system is inefficient. In February 2026, the government extended ECO4 by nine months to 31 December 2026.

Eligibility depends on income, benefits, and property efficiency rating. Installations must improve the home’s energy performance. Not every household qualifies, but those who do may receive significant support.

Possible support:

• Free boiler replacement in some cases
• Partial funding in others
• Insulation upgrades included

Boiler Upgrade Scheme (BUS)

The Boiler Upgrade Scheme helps homeowners in England and Wales replace old heating systems with low-carbon alternatives. This scheme supports heat pumps and biomass boilers, not standard gas boilers. The grant reduces the upfront cost, but installation still requires a certified installer.

The scheme pays a fixed amount toward the installation, and the homeowner covers the rest. The scheme runs until 31 December 2027, and properties must meet certain energy efficiency rules before applying.

Typical support:

• Up to £7,500 for heat pumps
• Up to £5,000 for biomass boilers
• Recent expansions include £2,500 for air-to-air heat pumps

This scheme can reduce long-term running costs, but installation prices are usually higher than those of a gas boiler replacement.

Affordable Warmth Scheme, Northern Ireland

The Affordable Warmth Scheme (delivered by the Northern Ireland Housing Executive) targets low-income households facing fuel poverty and energy inefficiency. It provides grants of up to £7,500 (or £10,000 for solid wall insulation measures) for energy efficiency improvements, including insulation, central heating, boiler replacements, and new windows.

Eligibility focuses on private-sector homeowners/occupiers or private renters with a total gross annual household income of under £23,000, living in Northern Ireland as their main home.

Warmer Homes Scotland

The Warmer Homes Scotland programme is funded by the Scottish government and delivered via Home Energy Scotland. It supports households in or at risk of fuel poverty with energy-saving improvements worth £10,000 or more. This includes central heating such as a new gas boiler, an electric storage heater, or an air-source heat pump.

The home improvements offered to you will depend on your home’s assessment and your eligibility. Warmworks’ installers carry out the work, and in most cases, the Scottish Government will meet all the costs. You cannot get funding for work that’s already completed.

Local Authority Grants

Some councils offer local energy efficiency grants or home upgrade schemes. These can help with heating upgrades, insulation, or low-carbon systems. Availability varies by region, and funding may be limited each year.

Local schemes often focus on older homes, low-income households, or properties with poor energy ratings. Checking with the local council can reveal support that national guides do not list.

Support varies by area:

• Partial grants
• Full funding in rare cases
• Help with insulation and heating together

Energy Supplier Schemes

Some energy companies offer discounts, finance deals, or replacement schemes for customers. These offers change often and may depend on the type of boiler or the efficiency of the home.

Supplier schemes usually reduce new boiler costs rather than covering the full price. Installers may include finance plans or fixed-price packages through energy providers.

Possible offers include:

• Discounted installation
• Monthly payment plans
• Efficiency upgrade deals

Boiler Finance Options and Monthly Payment Costs

Finance options can spread new boiler costs over several months or years instead of paying the full amount upfront. Many installers offer payment plans, interest-free deals, or low monthly instalments. This makes it easier to replace a broken or inefficient boiler without delaying the work.

Finance agreements vary between installers, but most plans depend on the total cost, credit checks, and the length of the repayment period. Longer terms reduce monthly payments but increase the total paid over time. Some deals include interest, while others offer limited interest-free periods.

Interest-Free Boiler Finance

Some installers offer 0% finance for a fixed period, often between 12 and 24 months. This allows homeowners to spread new boiler costs without paying extra interest. These deals usually require a good credit score and may need a deposit.

Interest-free plans often apply to selected boilers or approved installers. Missing payments can cancel the offer, so the terms should be checked carefully before signing.

Typical example:

• Boiler cost: £3,000
• 12-month finance: about £250 per month
• 24-month finance: about £125 per month

Monthly Payment Plans With Interest

Longer payment plans usually include interest. These plans can run from three to ten years, depending on the installer and finance provider. Monthly payments stay lower, but the total cost increases over time.

This option suits homeowners who need a replacement quickly but cannot pay up front. Interest rates vary, so quotes should show the full repayment amount.

Typical example:

• Boiler cost: £3,000
• 5-year finance: about £60–£80 per month
• Total paid: higher than the original price

Buy Now Pay Later Options

Some installers offer buy-now-pay-later boiler finance with delayed payment plans. These allow the boiler to be installed immediately, with payments starting later. Interest may apply if the balance is not cleared within the agreed period.

These plans help when a boiler fails suddenly, but the terms must be checked carefully. Late payments can increase the total cost.

Typical features:

• No payment for several months
• Interest added after the delay period
• Available on selected boilers only

Finance can make installation more affordable in the short term, but it often increases the total amount paid. Interest, fees, and longer repayment periods add to the final cost. Comparing finance offers with standard quotes helps avoid paying more than necessary.

What a Boiler Quote Should Include

Boiler quotes can vary by thousands of pounds, even for the same type of installation. Some quotes include every part and upgrade, while others show only the basic boiler and fitting. Checking what the price covers helps avoid unexpected costs later.

Below are the main items every boiler quote should show.

Boiler Model and Output

The quote should state the exact boiler make, model, and output size. Different outputs suit different homes, and larger boilers cost more. The model name allows easy comparison between installers.

Quotes without a model number make it difficult to check warranty length, efficiency rating, or real price. Always confirm the boiler size matches the property.

Installation Labour

Labour should appear as part of the total price, even if not listed separately. The quote should confirm whether the price includes full installation, testing, and commissioning.

Extra labour may be needed if pipework changes, the boiler moves, or the system needs upgrades. These costs should appear before work starts.

Flue, Filter, and Controls

Most new boilers need a flue kit, a magnetic filter, and modern controls. Some quotes include these as standard, while others add them later.

Filters protect the boiler, and controls improve efficiency. Many manufacturers require both to keep the warranty valid.

System Cleaning or Powerflush

Installers often recommend a power flush or chemical clean before fitting a new boiler. This removes sludge that could damage the new unit.

The quote should say whether cleaning is included. If not, the installer may add the cost after inspection.

Pipework or Gas Supply Upgrades

Older homes sometimes need new gas pipes or changes to heating pipework. These upgrades can increase new boiler costs and should appear in the quote if required.

If the installer cannot confirm this at first, the quote should explain that extra work may be needed.

Warranty Length and Registration

The quote should show the warranty length and confirm that the installer will register the boiler. Warranty periods vary by brand and installer approval level.

Longer warranties often require filters, servicing, and correct installation. These conditions should be clear before the job starts.

Removal of Old Boiler

The price should include the removal and disposal of the old boiler. Some quotes leave this out, which can add extra charges later.

Back boiler removal or tank removal usually costs more, so this should be listed separately if required.

Comparing detailed quotes helps prevent hidden charges. The cheapest quote is not always the lowest final price. A complete quote often costs more at first but avoids extra work later. Getting at least three quotes gives a better idea of the real cost and helps spot missing items before installation begins.

How Long Does Boiler Installation Take?

Installation time affects new boiler costs because longer jobs require more labour. A simple replacement often finishes in one day, but conversions or relocations can take several days. Extra work, such as pipe upgrades, tank removal, or system cleaning, also increases the time required.

Most installers give an estimated duration before starting work. This estimate helps explain why some quotes cost more than others. Jobs that take longer usually involve more materials, more labour, or more complex system changes.

Installation type	Typical time
Like-for-like combi replacement	1 day
System or regular replacement	1–2 days
Regular to combi conversion	2–3 days
Moving the boiler	1–2 days
Back boiler replacement	2–3 days
Full system upgrade	3+ days

Larger homes often take longer because pipe runs are longer and systems are more complex. Older properties may also need extra work to meet current safety and efficiency rules.

Shorter installation times usually mean lower labour costs, but this is not always the case. High-quality installations can take longer when installers fit filters, upgrade controls, or clean the system properly.

When You Should Replace Your Boiler

Replacing a boiler at the right time can prevent breakdowns and control new boiler costs. Many boilers last between 10 and 15 years, but efficiency drops as parts wear out. Older boilers often cost more to run and may fail without warning, especially during winter.

Frequent repairs usually mean the boiler is near the end of its life. Paying for multiple callouts each year can cost more than installing a new system. Parts for older models can also become harder to find, which increases repair prices.

Efficiency is another reason to replace a boiler. Modern A-rated condensing boilers use less fuel than older models. Lower fuel use can reduce heating bills and improve comfort, especially in poorly heated homes.

Warning signs that replacement may be needed include:

• Boiler over 10–15 years old
• Rising energy bills
• Strange noises or leaks
• Uneven heating or poor hot water
• Frequent breakdowns

Upgrading before a complete failure allows time to compare quotes and plan the installation.

Best Ways to Reduce New Boiler Costs

New boiler costs can vary widely, but several choices can keep the price lower without reducing quality. The cheapest option is usually a like-for-like replacement, where the new boiler fits in the same place and uses the same system type. This avoids extra pipework, tank removal, or system changes, which keeps labour costs down.

Choosing a mid-range boiler instead of a premium model can also reduce the total price. Many standard boilers offer good efficiency and long warranties without the higher cost of top brands. The correct size boiler matters as well, since oversized models cost more to buy and install.

Getting more than one quote is one of the most effective ways to control new boiler costs. Prices can differ between installers depending on labour time, included parts, and warranty length. Comparing detailed quotes makes it easier to spot missing items or unnecessary upgrades.

Other ways to keep costs lower include:

• Replace the boiler in the same location
• Keep the same boiler type if possible
• Install during non-emergency situations
• Check eligibility for grants or support
• Avoid unnecessary system changes

Planning the replacement early often leads to lower prices. Emergency installations usually cost more because installers must complete the work quickly and may have fewer boiler options available.

Final Thoughts on New Boiler Costs in the UK

New boiler costs in the UK depend on the boiler type, brand, labour, and any extra work needed. Understanding these factors makes it easier to plan the replacement and avoid unexpected costs.

Most homes fall within the middle of the price range, especially when replacing a boiler with the same type in the same location. Costs increase when the system changes, the boiler moves, or older pipework needs upgrading. Extras such as filters, flushing, and new controls can raise the total, but they often improve efficiency and reliability.

Checking quotes carefully helps prevent paying more than necessary. A clear quote should include the boiler model, installation, controls, filter, flue, and any upgrades. Comparing several installers gives a better idea of the real price and helps spot missing items before work begins.

Running costs matter as much as the installation price. A modern A-rated boiler can use less fuel and reduce yearly energy bills, which can offset part of the upfront cost. Choosing the correct size and installing the system properly helps keep running costs low.

Planning the replacement early usually leads to lower new boiler costs. Emergency installs often cost more and give fewer choices. Checking for grants, comparing quotes, and understanding what affects the price makes it easier to get the right boiler at the right cost.

FAQs on New Boiler Costs in the UK 2026

What Is the Average Cost of a New Boiler in the UK?

The average cost of a new boiler in the UK is usually between £2,500 and £4,000, including installation. A simple combi replacement often costs less, while conversions, relocations, or larger systems can push the price above £4,500. The Energy Saving Trust places a typical replacement at around £3,700 for a standard upgrade in an average home.

How Much Is a Boiler Service in the UK in 2026?

A boiler service in the UK in 2026 usually costs between £80 and £120 for a standard gas boiler. Prices can be higher for oil boilers or older systems that need more time to check. Annual servicing helps keep the warranty valid, improves efficiency, and reduces the risk of breakdowns.

Can I Get a Grant for a New Boiler in the UK?

Some households can get help with new boiler costs through government or energy supplier schemes. The ECO4 scheme may cover part or all of the cost for eligible low-income homes. The Boiler Upgrade Scheme offers grants for heat pumps and biomass systems, not standard gas boilers. Local authority grants may also be available in some areas.

How Much Is a New Boiler in the UK From British Gas?

British Gas prices are often higher than those of independent installers. A new boiler from British Gas usually costs between £3,000 and £5,500, depending on the boiler type, warranty, and installation work required. Prices may include longer guarantees and finance options, which can increase the total cost.

How Much Is a New Bosch Boiler?

A new Worcester Bosch boiler usually costs between £1,000 and £2,500 for the boiler only. Installed prices often range from £3,000 to £4,500, depending on the model, output size, and installation difficulty. Boilers with longer warranties or higher output tend to cost more.

Is It Worth Replacing a 15-Year-Old Boiler?

Replacing a 15-year-old boiler is often worth the cost. Older boilers run less efficiently and can increase energy bills. Modern A-rated condensing boilers use less fuel and usually run more reliably. Frequent repairs, rising energy costs, or uneven heating are signs that replacement may save money over time.

Sources and References

• Energy Saving Trust – Boiler types explained
• GOV.UK – Extending the ECO4 end date
• Northern Ireland Housing Executive – Affordable Warmth Scheme
• Home Energy Scotland – Warmer Homes Scotland