If you get the right size boiler for your home and you get it serviced regularly, your boiler could last up to 15 years. It may even last longer than this, but you’ll find that your boiler begins to become less efficient as it gets older. Also, as technology improves, a boiler older than 15 years may not be the most efficient one on the market.
Average Boiler finance cost
The average cost of replacing your gas boiler is £2,500. Costs differ based on the type and brand of boiler you choose as well as the provider you decide to go with. For example, a small local business may be able to offer a better price than a large national tradesman as they will have fewer overheads. Itâs best to get a range of quotes from different boiler engineers so you can compare prices, reviews and references before going ahead.
Average price per Boiler finance job in 2025
Avg. price low | Avg. price low |
---|---|
Avg. price | Avg. price |
Avg. price high | Avg. price high |
£4600
£3450
£2300
£1150
£0
Boiler finance installation cost in your area 2025
Labour cost | £1,750 | |
Material cost | £625 | |
Waste removal | £125 |
Advantages for Boiler finance
- Lower gas bills each month with the more efficient modern combi-boilers
- When we replace a boiler, the controls usually need an upgrade, too - Modern controls allow you to adjust the heating from your smart phone
- Option to heat water and central heating seperately. Allowing you to just have hot water in the summer
- No more waiting for the cylinder to heat up: there’ll always be hot water whenever you need it
- Modern boilers are often smaller than older types. Give you extra space
Disadvantages for Boiler finance
- Annual boiler services are highly recommend and essential if installed in a rental property
- Carbon monoxide is produced during operation, faulty boilers could leak this into the property
- If you don't have gas already then there will be an additional cost to connect gas to your home
Boiler finance Manufacturers
Boiler finance FAQs
Ad hoc visits from your engineer to fix small issues with your heating system may actually seem cheaper and a lot more affordable, however when a boiler is ripe enough for a change these small issues are always never ending. Over some period of time, these small issues will inevitably get worse and the idea of “mend and make do will be an absolutely false economy. The best course of action in this sort of event is to find a replacement boiler to install as soon as possible. In this article, we’re going to give you some hints that’ll show you when your boiler needs to be replaced. Now let’s take a look!
✓ Insufficient hot water. Here, you’ll have to check the size of your hot water cylinder. It’s crucial to make sure that your boiler is rightly sized to power your heating as well as hot water circuit in line with your demands. You should always seek the advice of a heating expert who can recommend whether to fix or replace the boiler.
✓ Strange noises. It’s normal for components of the boiler to become worn or damaged over time. Replacing the particular component that’s causing the knocking or rattling may seem cost effective at first but more often than not, the noises usually signal a bigger issue which is likely to build up over time. Hence, it’ll be a lot more logical to replace the boiler itself.
✓ Regular repair of your boiler. It’s essential to have your heating system serviced by a Gas Safe engineer on an annual basis. However, when you have to call them more often than once a year for your yearly maintenance, it may be a wise decision to consider getting a replacement.
✓ Other events whereby you may need a new boiler includes when you can’t get the right temperature in your room, when the radiators don’t heat up as they should, when your boiler leaks and if your boiler still has a pilot light.
The A-G scale refers to the energy efficiency of your boiler. G-rated boilers are the least efficient, and give you less heat and hot water for your money. Installing an A-rated boiler will reduce your energy bills and carbon emissions. Don't compromise on cheaper, lower rated boilers, you will save yourself more money longer term with an A-rated model.
When your boiler is being replaced you won’t have hot water or central heating. If you don’t mind this you can stay in your home, and use portable electric heaters if needed. Most installers undertake a power flush before installing a new boiler now and this can cause muck and debris from the pipework, so you may wish to get out of the way while this is happening!
A combination boiler, also referred to as a “combi boiler, delivers both domestic hot water and space heating in a single package so as to save space, and in a lot of cases, money. These great features makes the appliance a very popular choice in UK homes and in fact, it represents more than 50 percent of all new boilers fitted in the UK on a yearly basis.
Most modern and high efficiency combi boilers are usually stainless steel condensing boilers which normally features an in-built secondary heat exchanger to deliver domestic hot water to a home or property. What’s more? When it comes to the heating season or the cold months, the combi boiler will operated as required to heat a structure and offer hot water for showers, sinks as well as other hot water appliances around the house. And when it gets to the warm season or summer months, the combi boiler will only work when there’s a need for domestic hot water which also helps you save more money.
Combi boilers are able to provide domestic hot water in such a way that’s energy efficient due to two primary reasons - the combi units possess a very high operating efficiency and also have a low internal water volume. As a result, in during the hot summer when space heating is not required, you’ll only have to pay to heat up the hot water that you really need and not an entire tank.
Combi boilers also have the following benefits:
✓ Lower costs. Due to the combined nature of the boiler and the lack of tank in the roof space, the installation time and costs are at a minimum.
✓ Saves space in your home as it effectively combines a central heating boiler with a water heater into one unit.
A boiler is simply the most important part of a central heating system as it generates the heat that warms up the home or property. Basically, the appliance or small furnace makes use of gas, LPG or oil in order to fuel its operation. However in the UK, most boilers are usually fuelled by natural gas which is supplied automatically from the national gas grid. And depending on how it operates, there are various types of boilers.
Typically, a gas central heating boiler will have multiple pipes entering from underneath. While one pipe supplies the boiler with gas from the mains gas supply, another pipe allows cold water to enter the boiler to be heated, the last pipe then enables hot water to exit the boiler so it can be distributed around the home.
✓ There are fuel jets and heat exchangers inside the boiler. When the heating is turned on, a valve is opened to allow the mains supply gas to enter a sealed combustion chamber in the boiler. There are multiple little valves which permit the entry of the gas before being ignited by an electric ignition switch. These jets heat a metal component in the boiler known as a heat exchanger which works to transfer the heat to the cold water pipe and heat up the water.
✓ Once the water has been heated to the target temperature, it’s then pumped through a circuit of pipe which runs around your home by an electric pump.
✓ The heated water enter each radiator, is then transmitted via a closed loop and radiates heat into each room.
✓ Once done travelling through all radiators, the water then returns to the boiler at which it must have been cooled. Therefore, the boiler will have to reheat following the same process before circulating. The water can only be drained by a professional Gas Safe engineer
If you’re looking for a reliable or reputable source for your new gas boiler, you definitely won’t find much better than British Gas. Using a big firm like British Gas comes with a plethora of benefits , but of course there are also some drawbacks, with the boiler prices being the main one and biggest turn off for most homeowners. However, just before we delve straight in to the price, let’s look at a thing or two about the big company.
The company, “British Gas are not a boiler manufacturer as you probably would have first imagined. They’re actually a company that specializes in the installation of boilers. As a result, they’re able to install just about any type of boiler you can imagine from any manufacturer. Be it a Worcester Bosch Greenstar 8000 Style or a Baxi 600, they’re able to provide you with the cost of having these boilers installed in your home or property.
Combi boilers are perfect boilers for space-saving and this makes them very popular on the market. They’re also very efficient when it comes to heating water instantly and warm your in few minutes. The price of a new British Gas combi boiler varies on a number of factors. Generally, the installation prices of combi boilers start from £1,800. Therefore, if British Gas are to be competitive with their pricing it should also be around this price.
However, if you have a large house with several rooms with a higher demand for hot water, British Gas will most likely recommend boilers such as Worcester Bosch 440CDi and the likes. Judging from other firms in the market, the price to have these types installed should be in excess of £3,000.
Condensing boilers are the in-thing when it comes to modern heating systems in UK homes and across the globe for a good reason. This is primarily due to the fact that condensing boilers happens to be highly efficient as it enables the fuel you’re burning to heat up your home go a lot further. Having a new high efficiency condensing boiler rather than an old G-rated non condensing boiler will not only enhance your heating controls, but also save you a lot of money annually. In this article, we’re going to take you through the basics of a condensing boiler. Let’s take a closer look!
If you’re interested in getting a greener and more efficient boiler, you simply can’t afford to look beyond a high efficiency condensing boiler. This is purely due to the fact that these condensing boilers happens to make a better use of the heat they’re able to produce from burning fuels like oil or gas ( in other words, they require less heat from the burner, which makes them a lot more efficient).
So how does a condensing boiler work? Unlike a non-condensing heat-nly boiler, some heat will be wasted in form of hot gases which are released from the flue. Meanwhile a condensing boiler captures some of the heat from these gases and puts them to use for heating up water that’s coming back from your central heating system. As a result, it requires just a minimal heat from the burner which make the boiler more efficient.
You should take note that all new modern boilers are condensing boilers. Therefore if you’re planning to replace an old boiler with a new one, you’ll definitely be buying a new condensing boiler and benefit from all the efficiency and savings that comes with it.
How Combi Boilers Work - Plumbing Tips
Our reviews
Average


Would highly recommend
Would highly recommend, they found me a firm which I was happy with a quote they give me and went ahead and had my job done within 2 days of enquiring.

Good easy way to find a selection of…
Good easy way to find a selection of trades you need all in one place.

Love LeadsDoWork it's a big part of my …
Love LeadsDoWork it's a big part of my Business I would recommend to anyone
Latest boiler finance reviews

Glowarm Central Heating
Based: in Mitcham, CR4Glowarm is a friendly family run business which has been established for over 25 years and has grown...
Latest review
Michael G., KT4
20th June 2025
Heating | Gas | Boiler Replacement in Worcester Park
Very friendly good advice given

WarmZilla
Based: in Cardiff, CF10The modern way to buy a new boiler
Save yourself time and money buying your new boiler by choosing ...
Latest review
Michael G., KT4
20th June 2025
Heating | Gas | Boiler Replacement in Worcester Park
Still to re contact

M.A.C. Heating Services
Based: in Shepperton, TW17Professional, sole trader, with vast knowledge and experience of domestic central heating systems. I...
Latest review
Michael G., KT4
20th June 2025
Heating | Gas | Boiler Replacement in Worcester Park
Still to re contact

Cordy Heating
Based: in Cwmbran, NP44Cordy Heating is based in Cwmbran and have 2 positive reviews
Latest review
Alan J., CF62
3rd October 2024
Heating | Gas | Boiler Replacement in Barry
Unfortunately the local guides website didn’t allow for the correct request so we w...

Diligent Energy Solutions
Based: in Birmingham, B30Here at Diligent Energy Solutions Limited, where excellence meets warmth. With a team of skilled pro...
Latest review
Mary B., B46
20th May 2024
Heating | Gas | Boiler Replacement in Birmingham
Good service very pleasant staff across the board would reconmend

Glow Green
Based: in Bournemouth, BH8Glow Green is one of the UK's leading providers of energy efficient products that focus on the need ...

Walsh Plumbing
Based: in Stevenage, SG1Walsh Plumbing Ltd
We understand that buying a new boiler can be an expensive purchase, which is ...
Latest review
Rod C., MK41
25th September 2023
Heating | Gas | Boiler Replacement in Bedford
Attentive management: Sensible prices without quibbles re minor changes : Excellent p...

Hometech-Group
Based: in Chester, CH4HomeTech is a company with 50 years of combined experience in gas engineering and plumbing. Our team...
Latest review
H., CH64
4th August 2023
Heating | Gas | Boiler Replacement in Neston
I would not hesitate in recommending this firm. 100% on every aspect of service and i...

Invictus Energy Group
Based: in St.helens, WA11Invictus Energy Group are energy efficiency experts, helping North West households with:New Boilers ...

Mac Gas
Based: in Bedworth, CV12Mac Gas is based in Bedworth and have 1 positive reviews
Latest review
LIND S., LE7
31st July 2023
Heating | Gas | Boiler Replacement in Leicester
MacGas is a very honest company, accredited by Worcester-Bosch. I was offered quotes ...
Rated Local heating engineers

Glowarm Central Heating LTD
Based: in Mitcham, CR4 4BEGlowarm is a friendly family run business which has been established for over 25 years and has grown to be one of London’s and the Home Counties leading central heating companies. We take pride in treating our clients on an individual basis, taking...

M.A.C. Heating Services
Based: in Shepperton, TW17 9BEProfessional, sole trader, with vast knowledge and experience of domestic central heating systems. Installing new gas boilers daily e.g. gravity fed to combi conversions, combi to combi etc..warm air system conversions to include installation of new ...

Walsh Plumbing Ltd
Based: in Stevenage, SG1 3EEWalsh Plumbing Ltd We understand that buying a new boiler can be an expensive purchase, which is why Walsh Plumbing strive to provide our customers with outstanding satisfaction in our boiler packages and installations. We are the experts in ou...

NEW World Plumbing & Heating
Based: in Stockport, SK6 1JJNEW World Plumbing & Heating based in Stockport, offer services in Heating. They have an average rating of 4.9166666666667 from 3 review(s). See their latest 5 star review below

Central Energy Residential LTD
Based: in Motherwell, ML3 6DACentral Energy Heating are experts in boilers, central heating and hot water solutions. We are fully qualified in renewable energy technologies and have been operating in the domestic and commercial heating markets for over 15 years. With head office...

Cordy Heating
Based: in Cwmbran, NP44 4SXCordy Heating based in Cwmbran, offer services in Heating. They have an average rating of 4 from 2 review(s). See their latest 3 star review below

Holland Gas Services Bournemouth Ltd
Based: in Wimborne, BH14 0JRAt Holland Gas we specialise in boiler/heating service and repairs as well as installation. Our Engineers are also fully NVQ City & Guilds Qualified Plumbers. We are an honest, fair and reasonable company who are proud of our high customer service. ...

John Wilkinson Heating And Services LTD
Based: in Warrington, WA3 5BEIn need of Heating Engineers in North West England? Well with over 30 years of experience, look no further! And when it comes to central heating, we understand that things should work seamlessly, which is why our customers are at the ethos of who we ...

Essex Gas Solutions Limited
Based: in Clacton-on-sea, CO15 5AXOur team are qualified to the highest standards & work in a clean today and professional manner at all times. Our Google reviews speak for themselves We are big enough to cope while being small enough to care

Gator Gas
Based: in Poole, BH15 4BDMy name is Paul and I run Gator Gas , we have over 20 years experience , so for a fast reliable friendly service contact us for all your plumbing and heating needs
Similar Customer Enquiries for Boiler finance
Heating | Gas | Boiler Replacement
Bridgwater - TA5
Enquiry from: Blessing E
Start Date: Immediate
Call anytime Extent of work: New Boiler Type of building: Semi-detached Fuel: Mains gas Number of radiators: 2 Quote requested on boiler replacement
Heating | Gas | Boiler Replacement
Aberdeen - AB12
Enquiry from: Brian C
Start Date: Immediate
Boiler replaced Asti is leaking
Heating | Gas | Boiler Replacement
Luton - LU3
Enquiry from: Menhaj U
Start Date: Immediate
Call anytime Extent of work: New Boiler Type of building: Terraced Fuel: Mains gas Number of radiators: 9 Quote requested on boiler replacement
Heating | Gas | Boiler Replacement
Reigate - RH2
Enquiry from: Charles D
Start Date: Immediate
New Gas Boiler to replace our Worcester Bosch Greenstar
Heating | Gas | Boiler Replacement
Kinlochleven - PH50
Enquiry from: Robert M
Start Date: Immediate
Replace Grant external combi oil boiler with Grant 26Kw combi external oil boiler..
Heating | Gas | Boiler Replacement
Stockton-on-tees - TS16
Enquiry from: Brian J
Start Date: Immediate
Call back anytime. Extent of work: New Boiler Type of building: Semi-detached Fuel: Mains gas Number of radiators: 8 Quote requested on boiler replacement
Heating | Gas | Boiler Replacement
Hook - RG27
Enquiry from: Doug S
Start Date: Immediate
customer requested quotes for gas boiler replacement from a heating engineer around hook. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the in...
Heating | Gas | Boiler Replacement
Skelmersdale, Wigan - WN8
Enquiry from: M
Start Date: Immediate
New Combi Boiler Installation Where do you need it? *** What type of property is this for? House What boiler type would you like? Combination (combi) Where would you like the boiler located? I...
Heating | Gas | Boiler Replacement
Ammanford - SA18
Enquiry from: David E
Start Date: Immediate
Reconditioned combi oil boiler
Heating | Gas | Boiler Replacement
Dundee - DD1
Enquiry from: Ajit T
Start Date: Immediate
Need quote for installing a complete gas central heating system for 2 bedrooms, living room, small bathroom, hallway and kitchen. Combi boiler or conventional boiler prices for comparison.
Heating | Gas | Boiler Replacement
London - SE28
Enquiry from: Abu K
Start Date: Immediate
Call back anytime. Extent of work: New Boiler Type of building: Semi-detached Fuel: Mains gas Number of radiators: 9 Quote requested on boiler replacement
Heating | Gas | Boiler Replacement
Prescot - L34
Enquiry from: Denise M
Start Date: Immediate
Call anytime. Extent of work: New Boiler Type of building: Semi-detached Fuel: Mains gas Number of radiators: 0 Quote requested on boiler replacement
Heating | Gas | Boiler Replacement
Crawley - RH11
Enquiry from: Ashraf M
Start Date: Immediate
Call any time. Extent of work: New Boiler Type of building: Terraced Fuel: Mains gas Number of radiators: 0 Quote requested on boiler replacement
Heating | Gas | Boiler Replacement
Worcester Park - KT4
Enquiry from: Michael G
Start Date: Immediate
Combi Boiler replaced in upstairs cupboard
Heating | Gas | Boiler Replacement
Peterborough - PE4
Enquiry from: Lesley D
Start Date: Immediate
Thinking of replacing old boiler
Heating | Gas | Boiler Replacement
Rochester - ME1
Enquiry from: Moshahid A
Start Date: Immediate
Call back anytime. Extent of work: New Boiler Type of building: Terraced Fuel: Mains gas Number of radiators: 9 Quote requested on boiler replacement
Heating | Gas | Boiler Replacement
Stonehouse - GL10
Enquiry from: Danielle H
Start Date: Immediate
A quote and availability please for a combi boiler replacement please. Current model: Vaillant turbomax vuw 242, 24 kW, non-condensing, 78% efficient Combi. Horiz flue. There are 9 radiators, mostly...
Heating | Gas | Boiler Replacement
Aberdeen - AB10
Enquiry from: Maria S
Start Date: 1 to 3 months
customer in aberdeen area has requested that we arrange quotes for their gas boiler replacement project.mrs are considering various options and would like to discuss with a heating engineer directly.p...
Heating | Gas | Boiler Replacement
Enfield - EN3
Enquiry from: Joseph M
Start Date: Immediate
Call back anytime. Extent of work: New Boiler Type of building: Flat Fuel: Mains gas Number of radiators: 4 Quote requested on boiler replacement
Heating | Gas | Boiler Replacement
Southall - UB1
Enquiry from: Gurnam S
Start Date: Immediate
Owner Terraced bedroom 3 Combi boiler 5+ years old 1-3 months
Local & reliable heating engineers near me
Tell us about your boiler finance project
Answer a few quick questions, so we can match you with local heating engineers who can help.
Find up to 4 heating engineers in your area
Get free, no-obligation local boiler finance quotes from 4 verified heating engineers working in your area.
Hire with confidence
Compare customer reviews, services and prices, and choose the right tradesperson for you.