If you’re wondering how much does a new boiler cost, you’ll quickly find that there isn’t one straightforward answer. New boiler prices can vary considerably depending on the type of boiler you choose, the size of your property and how straightforward the installation is.
The cost of a new boiler also goes beyond the appliance itself. Labour, existing pipework, heating controls and whether you’re moving or changing your boiler type can all affect the final boiler quote.
In this guide, we’ll break down new boiler costs for 2026, including typical prices for combi, system and conventional boilers. We’ll also explain what affects boiler installation costs, whether grants are available and when boiler replacement is actually worth the investment.
At Nu Age, we provide professional boiler installation and heating services across Coventry, Leamington Spa, Solihull and the surrounding areas.
The cost of a new or replacement boiler can range from around £600 to £2,500 for the appliance itself, depending on the type, size and model you choose. However, this doesn’t include the cost of boiler installation, which means the final amount you’ll pay will usually be higher.
As a general guide, the average cost of a new gas boiler including installation is around £3,700. A straightforward boiler replacement in the same location may cost less, while changing the boiler type, moving it elsewhere or upgrading existing pipework can increase the overall installation cost. This is why it’s important to compare like-for-like boiler quotes rather than looking at the boiler price alone.
One of the biggest factors affecting new boiler prices is the type of boiler you need. Combi, system and conventional boilers provide heating and hot water in different ways, which can affect both the price of the appliance and how much work is involved during installation.
| Boiler type | What to know |
|---|---|
| Combi boiler | Provides heating and hot water without a separate hot water cylinder. A standard combi boiler replacement can be one of the simpler options. |
| System boiler | Works with a separate hot water cylinder and can suit homes with greater hot water demand. |
| Conventional boiler | Usually works with a hot water cylinder and cold water tank, and is commonly found in older heating systems. |
The final new boiler cost will also depend on the boiler brand, output and whether you’re replacing the existing boiler with a similar model or changing your heating system. A qualified installer can assess your property and recommend the right boiler based on your heating and hot water requirements.
A combi boiler is one of the most common choices for UK homes, providing heating and hot water from a single appliance without needing a separate hot water cylinder. Combi boiler costs vary depending on the brand, output and installation, with a straightforward combi boiler replacement in the same location generally costing less than converting from another boiler type. They’re compact and can be particularly suitable for smaller homes with one bathroom.
A system boiler works with a separate hot water cylinder, allowing it to store hot water for use when needed. This can make a new system boiler suitable for larger properties or households where several people may need hot water at the same time. The boiler cost itself varies by model and output, while the installation cost can increase if a new cylinder, pipework or other changes are required.
A conventional boiler, also known as a regular or heat-only boiler, typically works alongside a hot water cylinder and a cold water tank. These systems are often found in older or larger properties and can cope with greater hot water demands. A like-for-like replacement boiler may be relatively straightforward, but changing from a conventional boiler to a new combi boiler can increase boiler installation costs because additional pipework and system changes may be needed.
Gas boilers aren’t the only option when buying a new boiler. Electric, oil and biomass boilers may be suitable for properties without access to mains gas, although boiler prices and running costs can differ considerably.
The right option will depend on your property, heating system and access to different fuels. It’s worth comparing both the upfront cost and ongoing running costs before making a decision.
Electric boilers use electricity to provide heating and hot water without burning gas at the property. They’re compact and don’t require a flue, which can make installation simpler in some homes. However, electricity typically costs more per unit than gas, so running costs can be higher.
Oil boilers are commonly used in rural properties without access to mains gas. They require a suitable tank for fuel storage, which can add to the overall installation cost if one isn’t already available. Oil boiler prices also vary depending on the type, output and work required.
Biomass boilers burn organic materials, such as wood pellets, to provide heating and hot water. The upfront cost is generally much higher than a standard gas boiler replacement, and you’ll also need sufficient space for the boiler and fuel storage.
The cost of boiler installation can vary considerably between properties. A straightforward replacement is generally cheaper than a new boiler installation requiring significant changes to your central heating system.
Factors that can affect boiler installation costs include:
The boiler brand and model will also affect the final price. For an accurate figure, it’s best to get a boiler quote based on your property and the work actually required.
Keeping a replacement boiler in the same location is usually the most cost-effective option. A straightforward swap can allow installers to use much of the existing pipework and connections, reducing the amount of additional work required.
Moving the new boiler elsewhere may involve changes to the gas pipe, flue, condensate drainage, electrics and heating pipework. This can increase the installation cost, although relocation may still be worthwhile if the current position is inconvenient or no longer suitable.
Choosing the right boiler isn’t simply a case of buying the largest model you can afford. Boiler size refers to its output in kilowatts (kW), and the right output depends on the heating and hot water demands of your home.
When recommending a new boiler, an installer will consider factors such as:
A correctly sized boiler should provide enough heating and hot water without being unnecessarily powerful. A qualified installer can assess your property and recommend the right boiler for your needs.
Buying a new boiler can be a significant upfront cost, so replacement won’t always be the best option. Many boilers can last around 10 to 15 years when properly maintained, and an older boiler that’s safe, reliable and working efficiently doesn’t necessarily need replacing just because of its age.
However, boiler replacement may be worth considering if your old boiler regularly breaks down, repairs are becoming expensive or replacement parts are difficult to find. It may also make sense if your current boiler is inefficient or no longer meets your household’s heating and hot water requirements.
If the problem is relatively minor and your boiler is otherwise in good condition, a repair may be more economical than replacement. However, repeatedly paying for repairs on an unreliable older boiler can eventually make a new boiler better value. A professional boiler service and repair can help identify the fault and determine whether repairing or replacing the boiler is the more sensible option.
Replacing an inefficient old boiler with a modern, energy efficient model could help reduce your energy bills. Modern boilers are designed to use fuel more efficiently, while improved heating controls can give you greater control over when and how your home is heated.
How much you could save depends on your current boiler, property and heating habits. For example, the Energy Saving Trust estimates that replacing a G-rated gas boiler with an A-rated boiler and full heating controls could save around £420 a year in Great Britain. However, actual savings will vary between homes.
There isn’t a universal grant that provides everyone with a free boiler, and eligibility for heating upgrades depends on the scheme and your circumstances. The Boiler Upgrade Scheme, for example, doesn’t fund a standard new gas boiler. Instead, it provides support towards eligible low carbon heating systems in England and Wales.
Current Boiler Upgrade Scheme grants include:
Other support may be available depending on your household, property and location, so it’s worth checking current eligibility before assuming you’ll need to cover the full upfront cost.
Before agreeing to a new boiler installation, check exactly what your boiler quote includes. The cheapest headline price isn’t necessarily the cheapest overall if additional work is charged separately later.
Depending on the installation, your quote may include:
If you’re comparing boiler prices from different installers, make sure the quotes cover similar work so you can make a fair comparison.
The cost of a new boiler depends on the type of boiler, your property and how much work is required during installation. Getting a professional assessment can help you understand your options and choose the right boiler for your heating and hot water needs.
At Nu Age, our Gas Safe registered engineers provide professional boiler installation across Coventry, Leamington Spa, Solihull and the surrounding areas. We can assess your current heating system, discuss suitable boiler models and provide a quote based on the work required.
If you’re considering buying a new boiler, call 02476 950 000 or contact us to discuss your boiler replacement.
