PRICES
New Boiler, Great Price – Installed Locally!
NEW BOILER COST
On this page you can find our boiler prices ranging from combination, conventional, system boilers & more. Below our prices you will find and informational blog that will help you understand how any engineer or company will determine the cost of your boiler installation.
Our boiler pricing page is designed to give you clear, upfront information about the cost of a new boiler in Northwich and the surrounding Cheshire areas. We know that choosing a new boiler can feel overwhelming, especially with so many models, brands, and installation options on the market. That’s why we’ve made it simple. Whether you're looking to install a combi boiler, system boiler, or a heat-only boiler, we provide transparent, fixed boiler installation prices—with absolutely no hidden fees or surprise charges.
We have prices for the following fuel types:
Gas boiler, Oil boiler, LPG boiler, Electric boiler, Commercial boiler.
These prices describe how much to change a boiler and the full job complete. the price may be affected if the flue is vertical, the boiler is relocated, the gas pipe needs upgrading more than 3 meters or something unusual. Minor changes and improvements won't alter the price. All prices include a wireless room thermostat controller.
Please be advised that all our prices are plus VAT.
| BRAND | MODEL | PRICE | GUARANTEE | TYPE |
|---|---|---|---|---|
| Ariston | Ariston Clas One 26kw | £1,800.00 | 2 Years | Combi |
| Baxi | Baxi 224 LPG | £2,000.00 | 2 Years | LPG Combi |
| Baxi | Baxi 424 LPG | £2,200.00 | 5 Years | LPG Combi |
| Baxi | Baxi 224 | £2,000.00 | 2 Years | Combi |
| Baxi | Baxi 228 | £2,100.00 | 2 Years | Combi |
| Baxi | Baxi 424 | £2,200.00 | 5 Years | Combi |
| Baxi | Baxi 430 | £2,300.00 | 5 Years | Combi |
| Baxi | Baxi 624 | £2,300.00 | 7 Years | Combi |
| Baxi | Baxi 630 | £2,400.00 | 7 Years | Combi |
| Baxi | Baxi 636 | £2,500.00 | 7 Years | Combi |
| Baxi | Baxi 824 | £2,500.00 | 10 Years | Combi |
| Baxi | Baxi Duotec HE A 24 | £2,300.00 | 7 Years | Combi |
| Baxi | Baxi Duotec HE A 28 | £2,400.00 | 7 Years | Combi |
| Baxi | Baxi Duotec HE A 33 | £2,500.00 | 7 Years | Combi |
| Baxi | Baxi Duotec HE A 40 | £2,600.00 | 7 Years | Combi |
| Baxi | Baxi Platinum HE A 24 | £2,400.00 | 7 Years | Combi |
| Baxi | Baxi Platinum HE A 28 | £2,500.00 | 10 Years | Combi |
| Baxi | Baxi Platinum HE A 33 | £2,600.00 | 10 Years | Combi |
| Baxi | Baxi Platinum HE A 40 | £2,700.00 | 10 Years | Combi |
| Baxi | Baxi Megaflo HE A System 24 | £3,200.00 | 7 Years | System |
| Baxi | Baxi 415 Conventional | £2,400.00 | 5 Years | Heat Only |
| Baxi | Baxi 418 Conventional | £2,500.00 | 5 Years | Heat Only |
| Baxi | Baxi 424 Conventional | £2,550.00 | 5 Years | Heat Only |
| Baxi | Baxi 613 Conventional | £2,600.00 | 7 Years | Heat Only |
| Baxi | Baxi 816 Conventional | £2,850.00 | 10 Years | Heat Only |
| (Baxi) Main | Baxi Main Eco Compact 25kw | £2,100.00 | 5 Years | Combi |
| (Baxi) Main | Baxi Main Eco Compact 30kw | £2,200.00 | 5 Years | Combi |
| (Baxi) Main | Baxi Main Eco Compact 15kw | £2,200.00 | 5 Years | System |
| (Baxi) Main | Baxi Main Eco Compact 18kw | £2,400.00 | 5 Years | System |
| (Baxi) Main | Baxi Main Eco Compact Heat Only 15kw | £2,500.00 | 5 Years | Conventional |
| (Baxi) Main | Baxi Main Eco Compact Heat Only 18kw | £2,550.00 | 5 Years | Conventional |
| (Baxi) Main | Baxi Main Eco Compact Heat Only 24kw | £2,600.00 | 5 Years | Conventional |
| (Baxi) Main | Baxi Main Eco Compact Heat Only 30kw | £2,800.00 | 5 Years | Conventional |
| Glow-Worm | Compact 24kw | £2,100.00 | 5 Years | Combi |
| Glow-Worm | Compact 28kw | £2,200.00 | 5 Years | Combi |
| Glow-Worm | Easicom 24kw | £2,200.00 | 3 Years | Combi |
| Glow-Worm | Easicom 28kw | £2,300.00 | 3 Years | Combi |
| Glow-Worm | Energy 25kw | £2,400.00 | 2 Years | Combi |
| Glow-Worm | Energy 30kw | £2,550.00 | 2 Years | Combi |
| Glow-Worm | Energy 35kw | £2,700.00 | 2 Years | Combi |
| Glow-Worm | Energy 12kw | £2,050.00 | 7 Years | Heat Only Conventional |
| Glow-Worm | Energy 15kw | £2,100.00 | 7 Years | Heat Only Conventional |
| Glow-Worm | Energy 18kw | £2,150.00 | 7 Years | Heat Only Conventional |
| Glow-Worm | Energy 25kw | £2,200.00 | 7 Years | Heat Only Conventional |
| Glow-Worm | Energy 30kw | £2,300.00 | 7 Years | Heat Only Conventional |
| Glow-Worm | Easicom 25kw | £2,200.00 | 3 Years | Heat Only Conventional |
| Glow-Worm | Energy 12kw | £2,050.00 | 7 Years | System |
| Glow-Worm | Energy 15kw | £2,100.00 | 7 Years | System |
| Glow-Worm | Energy 18kw | £2,150.00 | 7 Years | System |
| Glow-Worm | Energy 25kw | £2,200.00 | 7 Years | System |
| Glow-Worm | Easicom 25kw | £2,200.00 | 3 Years | System |
| Glow-Worm | Compact 24kw | £1,800.00 | 3 Years | LPG Combi |
| Glow-Worm | Compact 28kw | £1,900.00 | 3 Years | LPG Combi |
| Glow-Worm | Energy 30kw | £2,300.00 | 7 Years | System |
| Ideal | Ideal Logic 24kw | £2,300.00 | 7 Years | Combi |
| Ideal | Ideal Logic 30kw | £2,500.00 | 7 Years | Combi |
| Ideal | Ideal Logic 35kw | £2,700.00 | 7 Years | Combi |
| Ideal | Ideal Vogue Max 40kw | £2,800.00 | 10 Years | Combi |
| Ideal | Ideal Logic 24kw | £2,600.00 | 7 Years | LPG Combi |
| Ideal | Ideal Logic 30kw | £2,700.00 | 7 Years | LPG Combi |
| Ideal | Ideal Logic 35kw | £2,800.00 | 7 Years | LPG Combi |
| Keston | Combi C30 | £2,900.00 | 5 Years | Combi |
| Keston | Combi C35 | £3,000.00 | 5 Years | Combi |
| Keston | Heat 2 45kw | £4,500.00 | 2 Years | Heat Only Conventional |
| Keston | Heat 2 55kw | £4,800.00 | 2 Years | Heat Only Conventional |
| Keston | System S30 | £2,800.00 | 5 Years | System |
| Mistral | Mistral CC2+ 20-26kw | £6,500.00 | 5 Years | Oil |
| Naiven | NCB 300 28Kw | £2,000.00 | 5 Years | Combi |
| Naiven | NCB 300 37Kw | £2,200.00 | 5 Years | Combi |
| Naiven | NCB 300 41Kw | £2,400.00 | 5 Years | Combi |
| Potterton | Potterton Titanium 24 | £2,100.00 | 7 Years | Combi |
| Potterton | Potterton Titanium 28 | £2,200.00 | 7 Years | Combi |
| Vaillant | Vaillant Ecotec Pro 24 | £2,400.00 | 2 Years | Combi |
| Vaillant | Vaillant Ecotec Pro 28 | £2,500.00 | 2 Years | Combi |
| Vaillant | Vaillant Ecotec Pro 30 | £2,600.00 | 2 Years | Combi |
| Vaillant | Vaillant Ecotec Plus 825 | £2,600.00 | 5 Years | Combi |
| Vaillant | Vaillant Ecotec Plus 832 | £2,800.00 | 5 Years | Combi |
| Vaillant | Vaillant Ecotec Plus 838 | £2,900.00 | 5 Years | Combi |
| Vaillant | Vaillant Ecotec Plus 938 | £3,400.00 | 5 Years | Combi |
| Vaillant | Vaillant Ecotec Exclusive 832 | £3,100.00 | 5 Years | Combi |
| Vaillant | Vaillant Ecotec Exclusive 843 | £3,400.00 | 5 Years | Combi |
| Vaillant | Vaillant Ecofit Pure 615 | £2,650.00 | 2 Years | System |
| Vaillant | Vaillant Ecofit Pure 618 | £2,700.00 | 2 Years | System |
| Vaillant | Vaillant Ecofit Pure 624 | £2,750.00 | 2 Years | System |
| Vaillant | Vaillant Ecofit Pure 630 | £2,800.00 | 2 Years | System |
| Vaillant | Vaillant Ecotec Plus 637 | £3,100.00 | 5 Years | System |
| Vaillant | Vaillant Ecofit Pure 415 | £2,550.00 | 2 Years | Heat Only Conventional |
| Vaillant | Vaillant Ecofit Pure 418 | £2,600.00 | 2 Years | Heat Only Conventional |
| Vaillant | Vaillant Ecofit Pure 424 | £2,650.00 | 2 Years | Heat Only Conventional |
| Vaillant | Vaillant Ecofit Pure 435 | £3,500.00 | 2 Years | Heat Only Conventional |
| Vaillant | Vaillant Ecofit Pure 430 | £2,700.00 | 2 Years | Heat Only Conventional |
| Vaillant | Vaillant Ecotec Pro 28 | £2,700.00 | 2 Years | LPG Combi |
| Vaillant | Vaillant Ecotec Plus 832 | £2,800.00 | 5 Years | LPG Combi |
| Vaillant | Vaillant Ecotec Plus 618 | £2,500.00 | 5 Years | LPG System |
| Vaillant | Vaillant Ecotec Plus 630 | £2,800.00 | 5 Years | LPG System |
| Viessmann | Viessmann Vitodens 050-W 29kW | £2,450.00 | 3 Years | Combi |
| Vokera | Easi Heat 25C | £1,700.00 | 5 Years | Combi |
| Vokera | Easi Heat 29C | £1,800.00 | 5 Years | Combi |
| Vokera | Easi Heat Plus 18H | £1,800.00 | 5 Years | Heat Only Conventional |
| Vokera | Easi Heat 20S | £1,800.00 | 5 Years | System |
| Vokera | Easi Heat 25S | £1,900.00 | 5 Years | System |
| Vokera | Easi Flow Multi Point | £1,700.00 | 2 Years | Water Heater |
| Worcester | Greenstar 1000 | £1,800.00 | 5 Years | Combi |
| Worcester | Greenstar 1000 | £1,900.00 | 5 Years | Combi |
| Worcester | Greenstar 2000 25kw | £2,100.00 | 5 Years | Combi |
| Worcester | Greenstar 2000 30kw | £2,200.00 | 5 Years | Combi |
| Worcester | Greenstar 4000 25kw | £2,400.00 | 7 Years | Combi |
| Worcester | Greenstar 4000 30kw | £2,500.00 | 7 Years | Combi |
| Worcester | Worcester 8000 Life 30kw | £2,800.00 | 8 Years | Combi |
| Worcester | Worcester 8000 Life 35kw | £3,000.00 | 8 Years | Combi |
| Worcester | Worcester 8000 Life 40kw | £3,200.00 | 8 Years | Combi |
| Worcester | Worcester 8000 Life 45kw | £3,400.00 | 8 Years | Combi |
| Worcester | Worcester 8000 Life 50kw | £3,600.00 | 8 Years | Combi |
| Worcester | Worcester 8000 Style Black 30kw | £2,900.00 | 8 Years | Combi |
| Worcester | Worcester 8000 Style Black 35kw | £3,100.00 | 8 Years | Combi |
| Worcester | Worcester 8000 Style Black 40kw | £3,300.00 | 8 Years | Combi |
| Worcester | Worcester 8000 Style Black 45kw | £3,500.00 | 8 Years | Combi |
| Worcester | Worcester 8000 Style Black 50kw | £3,700.00 | 8 Years | Combi |
| Worcester | Greenstar 4000 12kw | £2,400.00 | 7 Years | System |
| Worcester | Greenstar 4000 15kw | £2,450.00 | 7 Years | System |
| Worcester | Greenstar 4000 18kw | £2,500.00 | 7 Years | System |
| Worcester | Greenstar 4000 21kw | £2,550.00 | 7 Years | System |
| Worcester | Greenstar 4000 24kw | £2,600.00 | 7 Years | System |
| Worcester | Worcester Bosch 27I Compact | £2,500.00 | 7 Years | System |
| Worcester | Worcester Bosch 12RI | £2,650.00 | 7 Years | Heat Only Conventional |
| Worcester | Worcester Bosch 15RI | £2,700.00 | 7 Years | Heat Only Conventional |
| Worcester | Worcester Bosch 18RI | £2,750.00 | 7 Years | Heat Only Conventional |
| Worcester | Worcester Bosch 21RI | £2,800.00 | 7 Years | Heat Only Conventional |
| Worcester | Worcester Bosch 24RI | £2,850.00 | 7 Years | Heat Only Conventional |
| Worcester Greenstar | Greenstar Heatslave II 32kw | £6,500.00 | 2 Years | Oil – Combi |
| Worcester Greenstar | Greenstar Heatslave II 32kw | £7,000.00 | 2 Years | Oil – Combi |
| Worcester Greenstar | Greenstar Danesmoor 18kw | £4,500.00 | 2 Years | Oil – Heat Only Conventional |
| Worcester Greenstar | Greenstar Danesmoor 25kw | £5,000.00 | 2 Years | Oil – Heat Only Conventional |
| Worcester Greenstar | Greenstar Danesmoor 32kw | £5,500.00 | 2 Years | Oil – Heat Only Conventional |
| Worcester Greenstar | Greenstar Danesmoor 50kw | £6,000.00 | 2 Years | Oil – Heat Only Conventional |
| Worcester Greenstar | Greenstar Danesmoor 70kw | £7,000.00 | 2 Years | Oil – Heat Only Conventional |
| Worcester Greenstar | Greenstar Danesmoor 25kw | £6.500.00 | 2 Years | Oil – System |
| Worcester Greenstar | Greenstar Danesmoor 32kw | £7,000.00 | 2 Years | Oil – System |
| BRAND | MODEL | PRICE | GUARANTEE | TYPE |
|---|---|---|---|---|
| Baxi | Baxi Duotec HE A 28 | £2,400.00 | 7 Years | Combi |
| Baxi | Baxi 224 | £2,000.00 | 3 Years | Combi |
| Baxi | Baxi 224 LPG | £2,000.00 | 2 Years | LPG Combi |
| Baxi (Main) | Baxi Main Eco Compact 24kw | £2,600.00 | 5 Years | Heat Only Conventional |
| Baxi (Main) | Baxi Main Eco Compact 30kw | £2,200.00 | 5 Years | Combi |
| Glow-Worm | Energy 25kw | £2,200.00 | 7 Years | Heat Only Conventional |
| Glow-Worm | Energy 25kw | £2,400.00 | 2 Years | Combi |
| Mistral | Mistral CC2+ 20-26kw | £6,500.00 | 5 Years | Oil |
Prices May Be Subject To VAT
New Boiler Price
The new boiler price typically refers to the price of the boiler unit itself, before installation is factored in. Combi boilers are generally the most affordable option, with mid-range models priced between £700 and £1,200, while high-end models can reach £2,000+. System boilers, which are suitable for homes with higher hot water demands, usually range from £900 to £1,500, depending on output and brand. Conventional (heat-only) boilers tend to fall in a similar bracket, typically costing between £800 and £1,400. If you're considering an oil boiler, expect prices to start around £1,200, with premium models exceeding £2,500.
Cost To Replace Boiler
It's important to remember that the boiler replacement costs can rise significantly when installation is included. The cost to supply & install a boiler varies depending on complexity, but a straightforward combi-to-combi replacement usually ranges from £1,800 to £2,500 for the full job, while system upgrades or relocating a boiler can cost upwards of £3,000. When comparing new boiler prices, always consider efficiency ratings, warranty length, and aftercare service to ensure long-term value.
Boiler Installation Cost
What Is Included In Boiler Install?
Your boiler installation cost reflects much more than just the boiler itself. It covers a complete, professional service that ensures your heating system is safe, efficient, and fully compliant with current building and gas regulations.The price of new boiler depends on the complexity of the job, the full installation package usually includes:
- Boiler Unit Supply – A new A-rated energy-efficient boiler, suitable for your home size and hot water demand.
- Labour and Installation Work – All professional labour required to fit the new boiler, including safe removal and disposal of your old unit.
- Pipework Modifications – Adjustments or upgrades to your heating and gas pipework, if required, to meet modern standards.
- Flue Kit and Installation – Supply and fitting of a horizontal or vertical flue system to safely vent gases from your new boiler.
- Magnetic System Filter – Installed to protect your new boiler from sludge and debris, improving system longevity.
- System Flush or Chemical Clean(Chemical clean may incur extra charges) – Ensures your radiators and pipework are clean and your new boiler runs efficiently from day one.
- Wireless or Smart Thermostat – Most installations include a new room thermostat or upgrade to smart controls like Hive or Nest.
- Condensate Pipework and Drainage – Proper connection of the condensate pipe to your home’s drainage system, essential for condensing boilers.
- Wiring Up The Boiler and Other Components– Safe wiring of the boiler and any control systems, including integration with smart thermostats if chosen.
- Commissioning and Testing – Full testing and configuration of the boiler and heating system to ensure safe and efficient operation.
- Gas Safety Checks – Pressure checks and leak tests carried out by a Gas Safe registered engineer.
- Building Regulations Notification – The installation is registered with local authorities and a certificate is issued to you.
- Warranty Registration – The engineer will register your new boiler with the manufacturer to activate your warranty (up to 10 years on most models).
Cost Of Replacing Boiler With Combi Boiler
Your boiler replacement cost includes both the boiler unit and all labour required to safely remove your old boiler and professionally install the new one. Prices can vary widely depending on the type of system you're replacing and what you’re upgrading to. Here are some common boiler swap scenarios with typical costs:
Each of these swaps has different labour requirements, and the cost to install a boiler increases with complexity. Always ensure your quote includes a full system flush, magnetic filter, new controls (such as a wireless or smart thermostat), and all relevant safety certification. Choosing an experienced installer is key to making sure your system is not only compliant but efficient and future-proof.
- Combi to Combi: This is the most straightforward swap and typically costs £1,800–£2,500. The boiler is replaced in the same location with minimal changes to pipework, flue, or controls.
- System to Combi: Replacing a system boiler (which uses a separate hot water cylinder) with a combi involves removing the cylinder and modifying pipework. This can cost between £2,400–£4,000+ , depending on access and location.
- Heat Only to Combi: A popular upgrade in older homes, this swap involves removing a cold water tank and hot water cylinder, converting the system to mains pressure. Expect prices from £2,500 to over £3,500+, depending on the complexity and whether new pipework or flue routes are needed.
- Back Boiler to Combi: This is one of the most complex replacements, as back boilers are often located behind fireplaces. Removing them safely and rerouting new pipework for a combi system can push costs to £3,000–£4,500+.
- Combi to System: Rare but sometimes necessary in homes with multiple bathrooms and high hot water demand. Installation can cost £2,800–£5,000+, including the installation of a hot water cylinder.
Cost Of Replacement Boiler
To make boiler replacements more accessible, Engineers offer flexible financing options, including plans over 12 to 48 months or extended terms up to 10 years with competitive APRs. These plans often require no upfront deposit, allowing homeowners to spread the cost into manageable monthly payments.
Feel free to call us if you need advice with finance. Alternatively you can click below and start the process of getting finance for your boiler.
Boiler Replacement Price
Your boiler replacement price is determined on many things such as the complexity of the job, what type of boiler it is, what type of boiler you already have.
Boiler replacement costs typically fall between £1,800 and £3,000, but this can vary depending on the type of boiler you choose and the size or layout of your home.
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Cost of a New Boiler
The cost of a new boiler in the UK in 2025 typically starts from £600/£700 for the boiler unit alone, and can rise to £3,500, depending on what type of boiler you want. Choosing the right boiler can be difficult and may also seem like a huge amount of money to fork out. That's why it is important to get the right boiler and make a solid decision before jumping to conclusions. When comparing boiler quotes, don’t just look at the cheapest price—consider energy efficiency, reliability, and the length of the warranty too.
How Much To Fit A Boiler
Here are some well-known boiler brands, along with average pricing and what sets them apart. These new boiler prices are an approximate price depending on the complexity on the install and also for a combi-combi swap
New Boiler Installation Cost
Worcester Boilers
- Price range (boiler only): £900 – £1,900
- Installed price: £2,000 – £3,500
- Why they are recommended: Worcester Bosch is often seen as a premium brand. Their boilers are known for excellent reliability, long warranties (up to 12 years), and strong after-sales support. Ideal for homeowners who want peace of mind.
Vaillant Boilers
- Price range (boiler only): £850 – £1,700
- Installed price: £2,000 – £3,500
- Why they are recommended: German-engineered and known for efficiency, low noise, and advanced features. Vaillant boilers are highly rated for build quality and come with strong warranties.
Baxi Boilers
- Price range (boiler only): £700 – £1,400
- Installed price: £1,700 – £3,200
- Why they're a solid choice: Baxi offers mid-range prices with robust UK manufacturing and good support. A reliable choice for landlords or budget-conscious households.
Boiler Replacement Price
Your boiler replacement price is determined on many things such as the complexity of the job, what type of boiler it is, what type of boiler you already have.
Boiler replacement costs typically fall between £1,800 and £3,000, but this can vary depending on the type of boiler you choose and the size or layout of your home.
New Boiler Price
Each type of boiler is designed for different needs as well as location of your property and other factors. Here's a breakdown of the main types and what kind of homes they’re best suited to:
Cost To Replace Combi Boiler
Cost For Gas Central Heating Installation
- Typical replacement cost: £1,800 – £4,000+ (supply & install)
- Best for: Small to medium homes with 1 bathroom but larger models can perform up to around 2-3 taps at once. Please note that running 3 hot taps at once with a combi system will result in pressure loss.
- How it works: Provides heating and hot water on demand, without the need for a separate hot water cylinder or cold water tank.
Why it’s cost-effective: Fewer components, quicker installation, lower space requirements.
| Home Size | Combi Size | Combi Cost (Unit) | Combi Cost (Installed) |
|---|---|---|---|
| 1 Bathroom 1-2 Bedroom | 24 kW - 30 kW | £600 - £2,000 | £1,800 - £3,500 |
| 2-3 Bathroom 3-4 Bedroom | 35 kW - 40 kW | £750 - £3,000 | £2,200 - £4,500 |
| Larger Homes & Buildings | 45 kW+ | £2,500 + | £4,000 + |
Cost To Replace System Boiler
Cost For Gas Central Heating Installation
- Typical replacement cost: £2,000 – £3,200+
- Best for: Medium to large homes with multiple bathrooms
- How it works: Heats water in a storage cylinder and provides central heating; no cold water tank required.
Why it's more expensive: Additional components like the hot water cylinder add to the installation time and cost.
| Home Size | System Boiler Size | System Boiler Cost (Unit) | System Boiler Cost (Installed) |
|---|---|---|---|
| 1 Bathroom 1-2 Bedroom | 10 kW - 18 kW | £750 - £2,000 | £1,800 - £3,000 |
| 2-3 Bathroom 3-4 Bedroom | 18 kW - 26 kW | £750 - £2,500 | £1,800 - £3,500 |
| Larger Homes & Buildings | 30 kW+ | £750 - £2,500 | £1,800 - £4,000 |
Cost To Replace Conventional Boiler (Heat-Only Boiler)
Cost For Gas Central Heating Installation
- Typical replacement cost: £2,200 – £3,500+
- Best for: Older properties with traditional heating systems
- How it works: Requires a hot water cylinder and a cold water storage tank (usually in the loft).
Why it costs more: Involves more components and longer installation, especially if relocating or replacing tanks.
| Home Size | Heat Only Boiler Size | Heat Only Boiler Cost (Unit) | Heat Only Boiler Cost (Installed) |
|---|---|---|---|
| 1 Bathroom 1-2 Bedroom | 12 kW - 15 kW | £600 - £1,500 | £1,800 - £3,500 |
| 2-3 Bathroom 3-4 Bedroom | 18 kW - 24 kW | £750 - £2,000 | £2,000 - £3,000 |
| Larger Homes & Buildings | 28 kW+ | £1,000 - £2,500 | £2,200 - £3,500 |
Gas Boiler Prices
Gas boiler cost varies based on the type, output, brand, and efficiency rating. Entry-level combi gas boilers typically start from £500 to £700, while mid-range models from trusted brands like Ideal or Baxi usually fall between £750 and £1,400. Premium models from manufacturers like Worcester Bosch or Vaillant can exceed £1,500, but often come with longer warranties and better efficiency.
If your home has access to mains gas, a gas boiler is almost always the best-value heating option—both in terms of installation cost and day-to-day running costs.
Why Gas Boilers Are the Best Option
Lower Installation Costs
Compared to oil or electric systems, gas boilers are quicker and cheaper to install, especially if you're replacing an existing gas boiler. A straightforward gas combi boiler replacement typically costs between £1,800 and £2,500, including installation, controls, and safety certification. This all is determined by if you have access to gas where your property is. Most countryside houses or farms usually don't have access to gas which leads to a different discussion of LPG or Oil.
Lower Running Costs
Mains gas is currently the cheapest fossil fuel available to UK households. As of 2025, heating your home with gas costs significantly less per kilowatt-hour (kWh) than electricity or LPG. This means your monthly energy bills are generally lower with a modern, energy-efficient gas boiler—especially if it's an A-rated condensing model.
Reliable and Efficient
Modern gas boilers are compact, quiet, and over 90% efficient, converting most of the fuel into usable heat. Combination (combi) boilers provide heating and hot water on demand, eliminating the need for water tanks or cylinders and saving valuable space in smaller homes.
Widely Supported and Easy to Maintain
Gas boilers are the most common type of heating system in the UK, which means parts, servicing, and support are widely available. Most Gas Safe engineers are fully qualified to install and maintain gas boilers, keeping repair costs low and response times fast.
Gas Boiler Cost
Ariston Clas One 26kw
Budget-Friendly Option
- Installed Cost: £1,800 – £2,000
- Best For: 1–2 bedroom homes, flats, or properties with 1 bathroom
- Details: The Ariston Clas One 26kW Combi Boiler is a budget-friendly option that combines affordability with reliable performance, making it suitable for small homes or flats. Typically used by landlords
Baxi Main Eco-Compact 30kw
Mid-Range Option
- Installed Cost: £1,800-£2,500
- Best For: 2–3 bedroom homes with moderate hot water demand
- Details: A Staple UK boiler brand that is reliable and has a reputable name. Comes with a 5 year warranty when installed by an approved engineer. Ideal for homeowners who want quality and peace of mind.
Worcester Bosch 8000 Life 35kW Combi Boiler
Premium Option
- Installed Cost: £2,000-£4,000
- Best For: 2–3 bedroom homes with moderate hot water demand
- Details: A well known brand among the UK. Trusted by many homeowners & is one of the biggest names in the boiler business. Comes with a 12 year warranty. Ideal for homeowners who want a reliable, well known brand.
How Much To Move A Boiler
Move Boiler Cost
The cost to move a boiler depends on how far you're relocating it and whether you're upgrading the system at the same time. If you're simply moving the same boiler to a new location, such as from the kitchen to the utility room, prices typically start from £900 to £1,200, covering new pipework, flue adjustments, and labour. However, if you're moving the boiler and replacing it with a new model, the cost usually increases to £2,500–£3,500+, depending on the type of boiler being installed. In cases where you're relocating or removing a hot water cylinder, such as when converting from a system boiler to a combi, expect costs to rise to £3,000 or more, due to additional plumbing work and an extra day in time it may take in addition to the boiler installation. Every move requires a Gas Safe engineer, and final pricing depends on access, boiler type, and how far services like gas and water need to be rerouted.
How Much To Fit A Boiler Labour Only
If you’ve already purchased a boiler and just need it professionally installed, the labour-only cost to fit a boiler generally ranges from £700 to £1,250, depending on the complexity of the job. A straightforward combi-to-combi swap in the same location will be at the lower end of the scale, while installations that require flue adjustments, gas pipe upgrades, or electrical work will push costs higher. Labour-only installations typically include the removal of the old boiler, fitting and connecting the new unit, testing, and commissioning the system to ensure it’s safe and efficient. However, you’ll need to supply all materials, including the boiler, flue kit, filters, thermostat, and any pipework needed. Make sure your installer is Gas Safe registered, and that they provide a Building Regulations certificate once the job is completed.
Please note that some engineers may decline to install a boiler that was purchased a long time ago or if there is uncertainty regarding its condition or origin.
Oil Fired Boiler Replacement Cost
The cost of replacing an oil fired boiler usually starts at £3,500 and goes upwards of £6,500, depending on the boiler type, size, and complexity of the installation. Oil boilers tend to be more expensive than gas or electric systems because they require an external oil storage tank, longer pipe runs, and specialist installation. They’re most commonly used in rural homes or off-grid properties without access to mains gas.
There are two main types of oil boilers:
- Oil Combi Boilers – These provide heating and hot water on demand, with no need for a separate hot water cylinder. Best for smaller homes or properties with 1 bathroom.
- Conventional & Heat Only Oil Boilers – These store hot water in a tank and are ideal for larger homes with higher hot water demand, such as properties with multiple bathrooms.
Cost To Replace Oil Boiler
- Typical replacement cost: £3,000 – £8,000+ (Heat only Boilers usually are around £2,500-£3,500)
- Best for: Rural homes not connected to the gas grid
- How it works: Runs on heating oil stored in an external tank; available as combi or system boilers.
- Installation notes: Needs space for the oil tank and regular fuel deliveries.
| Home Size | Oil Combi Size | Oil Combi Cost (Unit) | Oil Combi Cost (Installed) |
|---|---|---|---|
| 1 Bathroom 1-2 Bedroom | 18kW - 20kW | £1,500 - £3,000 | £3,000 - £6,000 |
| 2-3 Bathroom 3-4 Bedroom | 21kW - 32kW | £1,500 - £3,500 | £3,000 - £6,500 |
| Larger Homes & Buildings | 32kW+ | £2,000 - £4,500 | £4,000 - £8,000 |
Other Fuel Options
If the oil boiler replacement cost is too high for your budget, there are alternative heating systems worth considering:
- LPG Boilers – Cheaper to install than oil but higher cost to run. A good option for off-grid homes.
- Electric Boilers – Ideal for small homes or flats, with lower installation costs (but higher running costs).
- Air Source Heat Pumps – A renewable alternative for well-insulated homes, with long-term energy savings and grant support available.
Choosing the right heating system depends on your home size, hot water needs, and whether you’re connected to the gas grid.
Cost To Replace Electric Boiler
- Typical replacement cost: £1,500 – £2,500+
- Best for: Flats and small homes with no access to gas or oil
- How it works: Uses electricity to heat water for central heating and taps.
- Pros & cons: Lower installation costs, but higher running costs unless paired with solar or off-peak tariffs.
| Home Size | Electric Boiler Cost (Unit) | Electrical Boiler Cost (Installed) |
|---|---|---|
| 1 Bathroom, 1-2 Bedroom | £600 - £2,000 | £1,800 - £4,000 |
| 3-4 Bedroom, 2-3 Bathroom | £1,200 - £3,000 | £2,400 - £5,000 |
Commercial Boiler Installation
Commercial boiler installation is essential for buildings that have higher heating and hot water demands than a standard home. You will usually need a commercial boiler in places like offices, schools, hotels, warehouses, care homes, and large flat complexes. These larger boilers typically range from 50kW to 500kW+, and are built to heat multiple rooms, large spaces, and support constant hot water usage.
The cost of commercial boiler installation varies depending on the size of the system, type of fuel (gas, oil, or electric), and how complex the installation is. On average, prices range from £5,000 to £50,000 and even more when more equipment is needed. This is to fully supply and fit, including the boiler, labour, flue systems, pipework, and safety testing.
Because of the scale and technical requirements, commercial boiler installations must be carried out by qualified engineers with commercial Gas Safe (or OFTEC for oil systems) certification. Proper installation ensures your building meets safety regulations, runs efficiently, and avoids costly downtime.
If you're upgrading an existing plant room or installing a commercial boiler in a new building, working with an experienced, accredited installer is key to getting reliable performance and long-term energy savings.
Due to the complexity and variation of commercial plumbing systems, accurate pricing requires detailed calculations and an in-person assessment to ensure all requirements are properly accounted for.
If you need any further help discussing boiler options or you would like to get booked in for a boiler installation, fill in the contact form below for one of our team to contact you. Alternatively you can give us a direct call on 07960838210.
Our team are always happy to give advice and discuss your options with you to make sure you make the right choice for your home
Written By Corey Willis
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