How to get a cheap boiler

Switching to a new boiler is a great way to reduce the amount of energy you use, and save some money, but there’s a problem: a new boiler can cost between £500 and £2,500.

If one fails at the wrong time, we might find ourselves struggling to pay for new one. However, there are ways to reduce the cost.

Cheap boilers - what you need to know

First thing’s first – check whether you qualify for a free boiler. The Government is working hard to reduce the UK’s carbon footprint and switching to newer, more efficient and cleaner boilers is a great way to do this.

Their free boiler grant is available for people on low incomes and receiving certain benefits. Already, more than a million homeowners have received these grants and even if you don’t qualify for a free boiler you may still be due some help towards the cost of a boiler. Most people in London, for example, can receive £400 cashback when they buy a new boiler. Have a look at our free boiler guide to find out more.

When making your selection, don’t just go for the cheapest option. Shop around to get a number of different quotes for purchase and installation. Make sure you have the right sized boiler for your home. A bigger boiler could be more expensive and provide more energy than you need. It might work well, but it will waste money.

Make sure you get value for money. One boiler might be more expensive than another, but it could be more efficient and use less energy which means it will pay off in the long run. A recognised and reliable brand can be a good way to go – our best boiler guide offers some tips about which boiler is best.

How to get cheap boiler installation

When thinking about the price of a new boiler many people make the easy mistake of focusing on the purchase price rather than the installation cost. The price may vary considerably among different providers, so it’s worth playing the market and shopping around among both local and national providers until you find one that you like.

The cheapest will not always be the best option. Quality is important; if you select someone based only on price, they may not do a particularly good job which could leave you paying the price for further repairs and maintenance.

Cheapest combi boilers from leading manufacturers

The most common type of boiler is what’s called a combi boiler. As the name implies, it combines a boiler and water heater in one simple package saving a lot of space and money.

There are some with smaller outputs which are perfect for smaller homes with one or two bedrooms.

The table below shows cheap combi boilers from leading manufacturers suitable for smaller homes.


Boiler name

Sizes (kW)


Compact 25A
£490 - £525
Main Eco Elite
£565 - £580
Gold 24 Combi
£610 - £625
Ultimate2 30C
£655 - £685
Duo-tech 24 Combi
£680 - £710

If you have a larger house with more than two bedrooms you may need a cheap combi boiler with a larger heat output.

The table below shows some of the best options for larger homes.


Boiler name

Sizes (kW)


Gold 33 Combi
24, 28, 33
£740 - £765
Ultimate2 35c
30, 35
£850 - £870
Unica i36
28, 32, 36
£870 - £900
Duo-tech 33 Combi
24, 28, 33, 40
£905 - £925
Worcester Bosch
Greenstar 29CDi Classic
29, 34, 38. 42
£995 - £1,055

Click here to learn more about combi boiler costs.

Cheapest system boiler from leading manufacturers

A system boiler delivers heat directly for your central heating, while also producing hot water for your cylinder. It pulls together the cistern tank and many other components which means it takes up a lot less space than regular boilers.

The table below shows the cheapest system boilers from leading manufacturers in the UK.


Boiler name

Sizes (kW)


Gold 18 System
18, 24, 28
£560 - £585
Logic System 15
15, 18, 24, 30
£695 - £720
Megaflo 15 System
15, 18, 24, 28, 32
£740 - £775
ecoTEC plus 612
12, 15, 18, 24, 30, 37
£765 - £785

Cheapest heat-only boilers from leading manufacturers

Also known as conventional or traditional boilers, these are useful if you already have a heating and hot water system which is linked to a hot water cylinder. They must also have a cold water tank up in the loft which will feed the hot water cylinder and a tank which maintains the central heating’s water level.

The table below shows cheap heat-only boilers from leading manufacturers.


Boiler name

Sizes (kW)


Mynute 20VHE
15, 20
£500 - £535
Worcester Bosch
Greenstar 12Ri ErP
12, 15, 18, 24, 27, 30
£715 - £740
Worcester Bosch
Greenstar 15Ri
12, 15, 18, 24, 27, 30
£755 - £775
Vortex Eco Utility 15-21
15, 21, 26, 35
£995 - £1,125

What if I can’t afford the upfront costs?

The upfront cost of a boiler may well make some people think twice. The cost of living is on the rise and we don’t all have a thousand pounds and more lying around to invest in a new boiler.

Even so, there are options.

Free boilers:

As mentioned earlier, free boiler schemes are available to people on lower incomes and receiving certain benefits. Even if you don’t qualify for a free boiler you may be eligible for some financial support.

Pay by instalments:

If the upfront cost is too much, think about a finance option. For example, you could pay monthly which would help you to spread the costs.


Renting a boiler also offers an option. For a much lower monthly fee, you can rent a boiler for your house. This avoids a high upfront fee but will cost more in the long-term.

Replacing an old boiler is undeniably both expensive and troublesome, but it’s worth getting right. Check for any financial help you might be entitled to and make sure you get a boiler which is both affordable and good quality to ensure you get full value for money.

See also:

How much does a boiler service cost?

Compare Boiler Quotes in Your Area

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