Boiler Comparison: Prices & Quotes UK in 2025

Boiler Comparison: Prices & Quotes UK in 2025

How do different types of boilers and brands compare? Here we'll compare boiler prices and boiler quotes so you know how much you can expect to pay.

Are you trying to find out who offers the best boiler prices in the UK?

There are several types of boilers, but in the UK combinations, also called combi boilers are by far the most popular among households.

The prices of boilers are impacted by a range of different factors including:

Typically, the average price for a mid-range, medium-size combi boiler is between £700 - £900.

You then need to factor in the cost of professional installation, which can range from £500 to £1,500  depending on the area and complexity of the job. 

Please note: Ultimately an accurate boiler installation cost depends on a variety of factors personal to your situation.

In this guide, we will compare boiler prices on a variety of different boiler models from some of the UK’s best boiler brand manufacturers including Worcester Bosch, Vaillant, Baxi, Viessmann, Intergas, Ideal, Alpha, Potterton, Glow-Worm and Vokera.

Important point: You do not have to buy your boiler from the company that provides your gas or energy bills.

Check out our updated price tables below to get an idea of how much you can expect to pay for a brand-new boiler based on the type of boiler and installation scenario. 

Found a cheaper like-for-like quote for your new boiler? We'll match it, without question.

Want a fixed-price boiler quote that includes installation and any other necessary work? Get a fixed quote online in under 60 seconds

Compare Boiler Quotes - Important Factors to Consider

Here are the major factors you need to consider when comparing combi boiler prices in the tables below:

Property Size

If you are looking for a new boiler and want to compare boiler prices, it is important to choose a model appropriately sized for your property.

You may be able to get a smaller-sized boiler cheaper, but if it doesn’t meet the demands of your property, it’s going to fail the first hurdle – i.e. providing adequate warmth and hot water for you and your family.

Awards & Accolades

Boiler awards

You are going to want to secure your home with a reliable boiler that is going to last the test of time and has minimal issues along the way.

Which? Best Buy Awards is a respected consumer organisation that is known for providing balanced product testing and reviews, so it may be worth prioritising award-winning boilers.

Warranty Period

A 10-year warranty is pretty much standard at present, but not with all models and/or brands.

The warranty is going to ensure your boiler manufacturer will cover repairs if a component does malfunction during the warranty period, so the longer the better.

Who Offers the Cheapest Boiler Deals? 

The reality is that every company in the industry are constantly changing their boiler prices in response to normal market pressures, so it's impossible to say who is the cheapest at any given moment in time. 

It also depends on other factors, such as your location, the complexity of the installation and the brand of boiler you choose to install. That's why getting a range of quotes is typically advised. 

If you find a cheaper like-for-like quote, we'll match it without question.

New Boiler Price Range (exc. fitting)

Boiler Type

~ Price

Combi boiler

£600 - £2,000

System boiler

£700 - £2,500

Regular boiler

£500 - £2,500

Electric boiler

£500 - £2,500

Biomass boiler

£7,000 - £15,000

Boiler Installation Costs

Do not forget that the prices above are for the actual boiler unit alone and do not include the cost of professional Gas-safe installation or any other associated work that may be required for your circumstances.

The installation costs can vary depending on the complexity of your scenario e.g. the type of boiler you are having installed and whether or not you may be converting to a different type of boiler completely. 

Common Boiler Installation Cost Scenarios:

With that said, here are some common boiler installation examples and their associated costs: 

Boiler

~ Price

Combi Boiler Installation

£1,300 - £2,500

Regular Boiler Installation

£1,500 - £3,500

System Boiler Installation

£1,500 - £3,500

Boiler Conversion

~ Price

Combi Boiler Conversion

£2,000 - £3,500

Back Boiler Conversion

£3,000 - £5,000

What type of boiler do you need? 

The type of boiler that is most appropriate for your home will depend on a variety of factors, including your hot water demands, property size and available water pressure.  

Combi boiler - Approximate cost - £600 - £2,000

The majority of UK homes use gas combi boilers. They are popular due to their small, space-saving designs and the fact they provide hot water and heating from a single unit, meaning they do not require additional tanks. 

However, they are typical, and not suitable for more significant properties with multiple bathrooms/or a high hot water demand. They also may not be suitable for areas that suffer from low mains water pressure. 

If you recently found out that you have a condemned boiler it can be a bit of a shock, if you are still considering what to do, refer to our guide on whether to replace or repair your boiler

Regular (heat-only) boiler - Approximate cost - £500 - £2,500 

Regular or heat-only boilers are composed of three main components, the boiler itself, a hot water storage tank and a cistern in the attic. They are a superb option for large properties with significant hot water demand. 

System boiler - Approximate cost - £700 - £2,500 

System boilers are essentially an upgraded version of the regular boiler and so are also work together with a hot water storage tank. They are ideal for larger properties with multiple bathrooms/water outlets. 

Whatever type of boiler you decide to install, you can buy any of them with Gas Safe installation via Heatable. 

Combi Boiler Prices, Quotes & Fixed Prices

When you are looking to get your boiler replaced, it is understandable that you want to know what price the boiler is going to be.

However, it is important to be aware that a complete boiler installation quote is going to include the cost of the boiler itself, additional materials, as well as the engineers time and labour.

That is why it is a great idea to get your new boiler from a provider that offers a fixed price, since this means it includes everything for a single price.

This means the price is non-negotiable and includes both the boiler installation and cost of the boiler.

Want a fixed price boiler quote that includes installation and any other necessary work? Get a fixed quote online now.

Compare new boiler costs and quotes online

Comparing new boiler costs and quotes online could not be easier and with boilers on finance, it is easier than ever to pay for your boiler in easy to manage monthly payments.

Heatable compares your new boiler options for you, whether you need a combi boiler, system boiler or a heat only boiler. O% interest boilers may also be available, allowing you make payments over a 24-month period.

Unlike other online boiler providers, we don’t only provide a fixed price, but we can match any quote like-for-like, so if you receive a quote from a boiler installer, but would rather our experts take care of it, we will be happy to match the price.

We also offer installation as fast as 24 hours, only ever use Gas Safe engineers and provide award winning boilers with 10-year warranties at highly competitive prices.

Oh, and don’t just take our word for it…. we have fantastic reviews on TrustPilot.com too.

Many of the boilers we supply have been winning Which? Best Buy Awards for 10 consecutive years in a row, so you can feel confident that your boiler will last for years and that if something does go wrong, the manufacturer will be there to offer their assistance.

Pay Monthly Boiler Finance Summary:

  • No deposit required (up to 50% optional)

  • Make overpayments with no penalty

  • Spread the cost for up to 10 years

Compare Boiler Prices FAQ

Is a Combi Boiler right for your home?

Combination boilers or combi boilers are pretty much the standard type of boiler installed in most UK households.

Combi boilers provide both hot water on demand and heat your home from a single unit, they do not have a hot water storage tank or cylinder.

This means they are designed to be extremely compact allowing them to be easily stored and hidden away, which is especially useful in homes with limited space.

New combi boilers are far more efficient than the older models, meaning they are better able to utilise the heat they generate and produce less waste.

In practical terms, this means you use less energy in comparison, helping you to reduce your energy consumption and as a result save more money.

For example, if you replaced an old G rated gas boiler with a modern A rated gas boiler, you could save as much as £315 a year on your fuel bill.

When are Combi Boilers not suitable?

Typically, a combi boiler is deemed not suitable in large homes and/or homes with a higher than average hot water demand e.g. homes with multiple outlets such as those with multiple bathrooms and more than 6 radiators.

Combi boilers would struggle to provide an adequate amount of hot water to multiple outlets instantaneously.

For this reason, system boilers or regular boilers are usually recommended in such scenarios, which come with an additional hot-water storage tank or cylinder.

Compare Boiler Prices & Quotes Conclusion

Getting a new boiler installation is a big decision, so before settling for your new combi boiler deal, make sure you are getting a healthy blend of the following…

  • Gas Safe installation within 24 hours

  • Thousands of happy customers – an average score of 4.9 on Trustpilot (that’s better than the market leader)

  • Price match guarantee – if you find a cheaper quote, we will match (must be like for like).

  • Multiple payment options - interest-free available

  • 10-year guarantee

  • Fixed price guarantee – no hidden costs

  • Save your quote until later

  • Use this clickable form to get a fixed price on the screen instantly

At Heatable, we only fit boilers which offer that beautiful blend.

Heat Happy. 

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