New Boiler Costs & Savings
What drives the cost of a new boiler, how much you could save by replacing an inefficient one, and the ways you can spread the cost.
- Last reviewed: July 2026
- Reading time: 6 minutes
Key takeaway
The cost depends on the boiler type, size and brand; replacing an old, inefficient boiler with a high-efficiency one can noticeably lower your bills.
What affects the cost
There is no single price for a new boiler, because every home is different. The main factors are the type and size of boiler you need, the brand you choose, and how straightforward the installation is — for example, whether the new boiler goes in the same place as the old one.
The main things that affect your price
- The type of boiler (combi, system or regular)
- The size and output you need
- The brand and warranty you choose
- How complex the installation is
How much you could save
Replacing an old, inefficient boiler with a modern, high-efficiency one can noticeably reduce your heating bills, because far less of the fuel you pay for is wasted. The exact saving depends on the age and condition of your old boiler and how you heat your home.
- Lower heating bills
- Higher efficiency
- Fewer breakdowns
Financing options
A new boiler does not have to mean paying everything upfront. There are flexible ways to spread the cost, and depending on your circumstances you may qualify for support. The best way to find out is a quick, free eligibility check.
Not sure what you can get?
Answer a few simple questions and we will tell you what support and financing may be available for your home.
Frequently asked questions
How much does a new boiler cost?
Prices vary with the type and size of boiler, the brand and how straightforward the installation is. The only accurate way to know is a free, no-obligation quote based on your home.
Will a new boiler lower my bills?
Replacing an old, inefficient boiler with a modern, high-efficiency one can noticeably reduce your heating bills. The exact saving depends on the age and condition of your old boiler and how you heat your home.
Are there grants or financing?
Depending on your circumstances you may qualify for support, and there are flexible financing options to spread the cost. A quick eligibility check is the easiest way to see what applies to you.
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Last reviewed: July 2026 · Reviewed by: Warmr Heating Team