Boilers have come a long way since we started making them 60 years ago.

New fuels, technologies, parts, and systems mean that the modern boiler is much more efficient than it used to be. But your boiler doesn’t need to be 60 years old for you to benefit from an upgrade. Changes made in the last 10, or even 5 years, have made a big difference to the amount of energy used – and the amount you spend on your energy bill.

Old boiler vs. new boiler

With prices going up, let’s bring your bills down.

One of the biggest energy savings you can make is by upgrading your boiler. By switching an old boiler out, and replacing it with a new one, you can increase your efficiency, lower your bills, and reduce your carbon footprint.

What this means for you is that, if you upgrade from an old G-rated boiler, you could save up to £840* on your bills.

That’s the equivalent of driving 715.5 miles less, every year.

See our A-rated boiler range
installer with homeowner
woman on phone

How much does it cost to upgrade?

The cost of upgrading mainly depends on your current boiler type, what you’re changing to, and where you are in the country. But as a ballpark figure, you can use the table below:

  • Combi to combi: £1,200 - £3,500
  • Combi to system: £1,200 - £4,000
  • Combi to regular: £1,200 - £4,000
  • System to system: £1,250 - £4,000
  • System to combi: £1,200 - £3,500
  • System to regular: £1,200 - £4,000
  • Regular to regular: £2,500 - £4,500
  • Regular to combi: £2,500 - £4,500
  • Regular to system: £2,500 - £4,500

How else can I save money?

As well as upgrading your boiler, there are other ways to keep your monthly bills manageable:

Better insulating your loft will mean less heat loss through your roof, and up to £590 saved over the year.

Reducing your thermostat by just 1° could save you £145.

Draught-proofing doors and windows will conserve more energy and could save up to £125 every year.

Using smart controls could save you £180 per year.

More ways to reduce your bills
smart controls
boiler upgrade

Should I upgrade my boiler now?

Many boilers can run perfectly even after 15 years of use, but that doesn’t mean you should keep it forever.

We recommend upgrading your boiler as soon as your guarantee has run out, so you don’t get stuck with expensive repair bills as your boiler gets older.

How long is left on my guarantee?

Find a local installer

Each heating system needs custom designing. Find and contact a Worcester Accredited Installer in your area to book a home visit and get a free quote.

Find the right boiler for you

Our Find a New Boiler tool is the easiest way to find and compare Worcester products suitable for your home heating requirements and only takes a few minutes.

Find your perfect new boiler