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Cheapest Boiler Installation 2024: Affordable Boiler Options

Hannah Maza
By: Hannah Maza
Updated: 24th May 2024

best cheap boilers in the UK

When it comes to finding cheap boilers in the UK, you want to ensure that the boiler is still good value. But with so many different new boiler makes and models out there, it can get a bit overwhelming trying to find the best possible deal.

To make things even more complicated, they all vary in factors ranging from warranties to new boiler costs. But don't worry, we did all the research for you and found the best cheap boilers in the UK in 2024. Continue reading to find the best and most reliable, affordable boilers.

If you’re simply looking for a cheap boiler, that’s something we can help with. You can quickly get free boiler quotes with Boiler Guide.

Just fill out our 30-second form and we’ll connect you with up to 3 heating engineers near you. Compare the boiler quotes with no obligations to place any orders. This way, you will get the best boiler deals and avoid the risk of being overcharged. Our service is free and non-binding, click below to begin!

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Cheap boiler installation and replacement: costs and process

factors that influence the boiler cost
For those homeowners seeking cheap boiler installation, the cost and process vary based on their needs. Some are balancing the need to meet their hot water demands without breaking the bank. Others are searching among the leading brands to find an energy efficient and cheap boiler replacement.

Whatever your situation is, here are some basic factors that influence the boiler cost:

  • Boiler brand: Prices range from £500 to £3,500. Budget options are under £900, mid-range is £900-£2,500, and premium models cost the most. Opting for a lesser-known boiler brand can also help save money, as long as the quality and warranty meet your needs.
  • Boiler type: Cheap combi boilers are the easiest to find as they are generally the most affordable, with prices starting from £500. System and conventional boiler prices start at £580 and £610 respectively. This is because these boiler types come with additional components which contributes to the installation complexity.
  • Fuel type: Electric boilers tend to be the most affordable, while oil boilers are generally more expensive to install than gas boilers.
  • Installation: Expect a total cost (including boiler, labour, and extras) of £1,500 to £5,000.
  • Labour: Straightforward installations (like replacing a combi boiler with a similar model) cost around £300 per fitter per day. Complex jobs will take longer and cost more.
  • Extras: Upgrading your boiler type (e.g., conventional to combi) can add £800-£1,200. Moving from a back boiler to a combi can add £3,000-£5,000 in total cost. Additional costs like pipework, thermostats, or system flushes may also apply.

Cost-saving tip: Consider multiple quotes from reputable installers and look into government schemes to get the best boiler deals. For example, the Boiler Upgrade Scheme and ECO4 can offer grants of up to £7,500 to help offset the new boiler cost for eligible homeowners.

Knowing the cost breakdown will help you navigate the boiler installation process and make informed decisions.

boiler installation process

  • Assessment: A heating professional will visit your home to understand your needs (property type, size, location) and recommend a suitable boiler size and type within your budget.
  • Getting a quote: You’ll receive a detailed quote outlining the boiler cost, labour charges, and any additional work or components needed.
  • Installation: Depending on complexity, installation can take 4-14 hours. Replacing a combi with a combi is quicker, while back boiler conversions take longer.
  • Additional work: New pipework, boiler relocation, or adding new components will be factored into the process and quote.

Yet it’s worth noting that while a cheap upfront cost might seem appealing, consider long-term savings. A more energy-efficient boiler can save you more money on energy bills in the long run compared to a cheap yet inefficient boiler. Consider consulting a heating engineer before making any purchases.

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Best cheap boilers

To begin with, we’ll point out that buying the cheapest boiler isn’t always the best course of action. Anyone considering a budget boiler should, first of all, browse or ask an installer: “How long does a cheap boiler last?”

The average lifespan of boilers in the UK is between 10-15 years. However, the actual lifespan of a boiler depends on its quality, type, and maintenance.

Cheaper boilers may need frequent repairs and replacements much sooner than more expensive or higher-quality ones. Essentially, you get what you pay for.

Having said that, there are many reliable and affordable boilers available on the market. And many are manufactured by leading boiler brands.

cheap boiler brands

The best boiler brands in the UK which make reliable and affordable boilers are Worcester Bosch, Vaillant, Ideal, Baxi, and Viessmann. There are other cheap boiler brands, however, that are worth your attention such as Glow-Worm, Vokera, and Alpha.

In the rest of this guide, you’ll find the best cheap boilers to buy in 2024 from the best boiler brands on the market, what to look out for when buying cheap boilers, and the best strategy to purchase budget boilers.

Cheap electric boiler brands

Apart from those, there are other brands like Ferroli and Heatrae Sadia that produce cheap electric boilers. Electric Heating Company also has boiler options priced between £681-£2,500.

In the rest of this guide, you’ll find the best cheap boilers to buy in 2024 from the best boiler brands on the market, what to look out for when buying cheap boilers, and the best strategy to buy budget boilers.

Cheap gas boiler brands

According to statistics, around 23 million UK homes rely on gas boilers for central heating and domestic hot water. Combi gas boilers are the most popular choice, making 80% of those 23 million. This is mainly because gas is currently the cheapest fuel type in Great Britain. However, gas boilers in the UK produce 92 million tonnes of carbon dioxide, which isn’t the most sustainable solution.

Yet, together with that, gas boilers dominate the market today, so leading brands are trying to come up with reliable and energy-efficient boilers.

Worcester Bosch, Vaillant, Baxi and Ideal provide models with different sizes and generous warranties - all within a budget of £1,000-£2,000.

Cheap electric boiler brands

Apart from the ones mentioned earlier, other brands like Ferroli and Heatrae Sadia produce cheap electric boilers. Electric Heating Company also has boiler options priced between £1,235 and £1,849 (also having more expensive options of up to £3,261).

In the rest of this guide, you'll find the best cheap boilers to buy in 2024 from the best boiler brands on the market, what to look out for when buying cheap boilers, and the best strategy to buy budget boilers.

Cheap combi boiler deals

cheap combi boilersCombi boilers are often the cheapest type of boiler and tend to be popular because they’re space-efficient and don’t need to be installed alongside any tanks or cylinders. Combi boiler prices start at around £500 and can rise to over £2,000, excluding installation costs.

While it isn’t unheard of for combi boilers to cost more than £2,000, most fall below this figure. Top boiler manufacturers can sell quality boilers at low-cost points. For example, one of the cheapest combi boilers in the UK is Baxi’s 424 combi gas boiler (2nd generation) which sells for £750, excluding installation costs.

So, how do you find deals for cheap combi boilers for sale in the UK? Proper quote comparison by yourself involves a lot of valuable hours spent calling local engineers.

With Boiler Guide, you can streamline this process and get the best boiler deals. Boiler Guide is able to do this through our vast network of Gas Safe registered engineers.

Get access to up to 3 free quotes from this network just by filling in a short form. We then take it from there while you wait to receive boiler quotes. After receiving quotes, you can then choose the best combi boiler deal for you (with no obligation!).

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Best combi boilers under £1,000

If you're looking for the best combi boiler under £1,000, you're in luck because we found 5 from the top manufacturers for you. These provide the best value for their price. You can compare them in the table below.

Best combi boilers under £1,000 overview
Brand Worcester Bosch Glow-Worm Ideal Baxi Viessmann
Model Greenstar 2000 Easicom 24kW Logic Max C24 Baxi 424 Combi Gas Boiler Vitodens 050-W 25kW
Central Heating Output 20kW 24kW 24.2kW 21.8kW 25kW
Domestic Hot Water Output 25kW 24kW 24.2kW 24kW 29.6kW
Efficiency 93% 94% 94% 93% 92%
Warranty Up to 6 years 5 years 10 years 5 years 3 years
Average Price
(Excl. Installation)
£790 £907 £968 £754 £930

Best combi boilers under £2,000

If you have a larger budget than £1,000, then we've also found the 5 best budget combi boilers under £2,000 for you. These boilers offer a higher output size than the slightly cheaper ones but still provide the best value for their price. You can compare them in the table below.

Best system boilers under £2,000 overview
Brand Worcester Bosch Vaillant Ideal Baxi Viessmann
Model Greenstar 8000 Life 30kW ecoTEC plus 832 Vogue Max C32 Baxi 836 Combi Gas Boiler Vitodens 100-W
Central Heating Output 30kW 25.7kW 26kW 26.4kW 25kW
Domestic Hot Water Output 30.2kW 31.8kW 32kW 36kW 31.7kW
Efficiency 94% 94% 93% 93% 94%
Warranty Up to 12 years 10 years 10 years 10 years up to 12 years
Average Price
(Excluding Installation)
£1,300 £1,573 £1,206 £1,509 £1,209

If you're looking for the overall best combi boilers in 2024, and not just the cheapest, we have a guide that can help you find the best one for you.

Cheap system boiler deals

cheap boilers glow warm

The cost of system boilers, on average, ranges from £580 to £3,500, excluding installation costs. System boilers tend to be popular for households that have a high hot water demand because they have an unvented cylinder that stores the hot water. For example, one of the largest system boilers has an output size of 99kW and can reach prices as high as £3,837.

However, 99kW is higher than needed for domestic boilers. For a small household with up to 10 radiators, one of the cheapest regular boilers is the Baxi Megaflo System 15 which costs £843 and has an output of 15kW. Make sure you check what boiler size you need beforehand.

We recommend getting quotes from up to 3 trusted Gas Safe registered engineers so that you can get accurate and reliable prices to compare and avoid overpaying.

The fastest and cheapest way to do this is by using our free quote service. We can help get you up to 3 free comparison quotes from vetted engineers in your area, and it's much faster than if you called around all the heating engineers near you.

The best part is that after receiving quotes, you can choose the best system boiler deal for you (with no obligation).

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Best system boilers under £1,000

In the table below you'll find the 5 best system boilers under £1,000 from the top manufacturers. These provide the best value for their price. You can compare these budget boilers in the table below.

Best system boilers under £1,000 overview
Brand Alpha Glow-Worm Ideal Baxi Vokera
Model InTec2 30SE Energy7 12S Logic System S15 Megaflo System 15 Easi-Heat i 25S
Central Heating Output 9.2kW 12.3kW 15kW 15kW 19kW
Efficiency 93% 94% 93% 91% 94%
Warranty Up to 8 years 10 years 2 years 7 years up to 12 years
Average Price
(Excluding Installation)
£899 £894 £785 £711 £995

Best system boilers under £2,000

If you have a larger budget than £1,000, then we've also found the 5 best budget system boilers under £2,000 for you. You can compare these budget boilers in the table below by their output, efficiency, warranty, and price.

Best system boilers under £2,000 overview
Brand Worcester Bosch Vaillant Ideal Baxi Viessmann
Model Greenstar 8000 Life 30kW ecoTEC plus 624 Vogue GEN2 S32 Platinum+ 32kW Vitodens 100-W B1HC 32kW
Central Heating Output 30kW 24.4kW 32kW 32kW 32kW
Efficiency 94% 94% 93% 92% 94%
Warranty Up to 12 years 10 years 10 years 10 years up to 12 years
Average Price
(Excluding Installation)
£1,609 £1,619 £1,592 £1,032 £1,435

If your budget is larger than £2,000, then you may be interested in our guide on the overall best system boilers in 2024.

Cheap conventional boiler deals

cheap conventional boilerGenerally, conventional boilers, also known as regular or heat-only boilers, range from £600 to £3,500, excluding installation costs. The price typically depends on the size of the boiler you’re installing. Some larger conventional boiler prices can go as high as £3,000.

However, typically you can find a cheap heat-only boiler from reputable brands starting at around £900. For instance, Baxi’s 412 heat-only boiler, costing £909, is the cheapest conventional boiler of the top 5 boiler manufacturers.

The total cost of getting a conventional boiler will increase when the boiler installation is considered. As conventional boilers need to be installed with a hot water cylinder and cold water cistern. This is why it's recommended to get a new conventional boiler only if you’re replacing an existing one and have enough loft space and an airing cupboard.

Ultimately, the installation cost depends on your current heating system. A boiler engineer will be able to give you more accurate quotes for your total boiler cost, including the installation and any extra parts, such as the boiler flue and hot water cylinder.

If you would like to get reliable quotes for cheap new boilers, you could first search for them yourself. Reading the reviews, choosing reliable installers and calling them is the way to do this. But how long would it take? Hours? Days? We bet it's not your dream chore on a Sunday night.

We can help you get up to 3 free quotes so that you can easily compare them. For this, just fill out our 30-second form and we'll connect you with trusted boiler engineers near you. Compare their quotes without having to place any orders. Our offer is free and stores no hidden fees. Click below to begin.

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Best conventional boilers under £1,000

We’ve found the 5 best conventional boilers, also called regular or heat-only boilers, under £1,000 from the top manufacturers for you. These provide the best value for their price. You can compare these budget boilers in the table below.

Best conventional boilers under £1,000 overview
Brand Worcester Bosch Glow Worm Ideal Baxi Vaillant
Model Greenstar 12Ri Glow-Worm Energy7 15R Logic Max Heat H12 Baxi 415 Heat ecoTEC plus 415
Central Heating Output 12kW 15.2kW 12kW 15kW 15.1kW
Efficiency 91% 94% 93% 93% 94%
Warranty Up to 8 years 10 years 10 years 5 years 5 years
Average Price
(Excluding Installation)
£997 £954 £909 £956 £974

Best conventional boilers under £2,000

We’ve gathered the leading manufacturers’ 5 best regular boilers under £2,000 for you. These offer the best value for money. The table below compares several discount boilers.

Best conventional boilers under £2,000 overview
Brand Worcester Bosch Vaillant Ideal Baxi Viessmann
Model Greenstar 8000 Life 30kW ecoTEC Pure 430 Logic Max Heat H30 Assure Heat 30 Vitodens 100-W B1GA 25kW
Central Heating Output 30kW 30.5kW 30.3kW 30kW 25kW
Efficiency 94% 94% 93% 93% 92%
Warranty Up to 12 years 10 years 10 years 2 years 5 years
Average Price
(Excluding Installation)
£1,609 £1,619 £1,592 £1,035 £1,435

What not to do when finding a cheap boiler

When looking for a cheap new boiler, it is good to keep in mind that there are some trade-offs and risks you take with getting the cheapest boiler. You may save on upfront costs, but you take the risk of incurring higher repair costs in the future. Cheap gas boilers for sale also tend to have shorter warranties, lower energy efficiency, and lower quality parts. This is also why gas boilers might get phased out, read more about this in our ‘are gas boilers being phased out?’ guide.

However, when getting a cheap boiler, you can minimise some of this risk if you don’t get a cheap boiler from an unreputable brand. Another way to minimise the risk of high repair costs is by not forgetting to get an annual boiler service.

Ultimately, when looking for a cheap boiler, you should never skip the boiler comparison step, as you may risk overpaying. If you want to compare multiple boilers at once, you can use the simple Boiler Guide boiler comparison tool.

Cheapest boiler to run

One of the cheapest boilers to run is a highly efficient combi boiler like the Ideal Logic Max Combi 24kW (94% efficiency). This is because it uses less energy to heat your home, resulting in lower energy bills. You can maximise your savings by pairing such a boiler with a cheap fuel source like gas.

How can you find the best cheap boiler?

how to find cheap boilers

When trying to find the best cheap boiler, it is good to know what makes one boiler more expensive than another. There are several factors that affect the price:

  • Output rating (heating demand)
  • Warranty period
  • Heating controls
  • Complexity of the installation
  • Manufacturer
  • Additional parts (e.g. magnetic filter, smart thermostat)

You can save more money by arranging a cheap boiler installation during the summer. Heating engineers tend to be less busy during the summer months, which can reduce costs.

Plus, replacing your boiler when you're less likely to need heating will reduce disruption and you'll have a new, efficient heating system in place before winter comes around.

In addition to these factors, you also need to consider how and where you’re looking for cheap boiler prices. You may be eligible for a government boiler grant that can help cover some, if not all of the cost. Alternatively, boilers on 0% finance option to save on your boiler investment. An often overlooked strategy to find the best cheap boiler deals is to compare prices from up to 3 boiler engineers near you.

By comparing quotes from heating engineers, you can be confident that you're getting a fair price. If you were to receive a single quote you wouldn't know if you were being overcharged. If you’re looking for reliable quotes, we can help save you time and give you advice by providing you with up to 3 free quotes from local heating engineers.

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FAQ

Which type of boiler is cheapest?

Combi boilers tend to be the cheapest type of boiler as they are compact and don't require any extra tanks or cylinders. They are also the most popular boiler type in the UK.

How much do boilers cost to replace?

Firstly, you need to account for the costs of the boiler itself, which can range from £500 to £3,000. It then typically costs between £500 - £1,000 in installation costs to replace your old boiler with a new boiler. However, this can be a lot more if you are changing the boiler type (i.e. from a combi boiler to a system boiler) or live in an area with high installation rates.

How much is the cheapest combi boiler?

One of the best cheap combi boiler deals that you can find starts at £549. The price of a combi boiler can range anywhere from around £500 to £3,000 depending on the manufacturer and size.

What if you can't afford a new boiler?

If you’re on a budget, there are many ways to find a cheap or free boiler. You can receive a grant to help cover part of the costs, or you may even be eligible for a free boiler if you qualify under a government scheme. There are also pay-monthly and 0% finance schemes that can help you spread out the costs.

Which is the cheapest boiler to run?

Defining the cheapest boiler to run usually depends on the fuel efficiency and fuel type. Since gas is the most affordable fuel in Great Britain, highly efficient gas boilers are the most effective boilers to run.

Hannah Maza

About the author

Hannah Maza

Hannah is our resident home heating expert with experience writing about cost-effective and energy-saving solutions. She spends her time researching UK energy trends, the future of heating, and renewable energy as the landscape changes.

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