Boiler Brands

The 6 best boiler brands and how to pick one that’s right for your home

Confused about which brand of boiler to choose?

Comparing boilers can seem complicated, worse than trying to choose a dessert from a glass display cabinet filled with a mouth-watering selection of sweet treats.

Firstly, decide what type of boiler you need.

Combi Boilers

These are a type of condensing boiler. They combine water and central heating, making them compact.

System Boilers

This is another type of condensing boiler, but it needs a water cylinder which makes them better for homes with more than one bathroom.

Conventional Boilers

These boilers are known as heat only boilers and are best for homes that already have a heating and hot water system linked to a hot water cylinder.

Oil and LPG Boilers

These boilers are for homes that aren’t or can’t be connected to gas mains. Oil or LPG needs to be delivered to your home on a regular basis.

If you’re boiler is ten years old or more then you might want to look at updating it. The older your boiler, the less efficient it will be, and the more it’s costing you in energy bills.

It’s time to replace your boiler if:

• It breaks down frequently
• It’s noisy (noisier than usual)
• It smells
• It takes too long to heat your home
• Your energy bills keep going up.

Are boilers going to be banned?

Maybe you’re panicking after hearing about a gas and oil boiler ban. Don’t worry, this is only for new builds from 2025.

The government has said no one will be forced to remove their existing fossil fuel boiler with a low-carbon alternative.

By replacing your gas or oil boiler with a new one, it will be more energy efficient, so it will heat your home better, reduce your bills, and it’s better for the planet.

A lot of modern boilers can be converted to run of more renewable fuel sources if the time comes to do this.

How to Choose a Boiler

There are several factors to consider when purchasing a new boiler.

Boiler Warranty or Guarantee

Some brands call it a warranty, some a guarantee. There is a slight difference (the guarantee is better), but both mean they will repair your boiler if it breaks down within a certain time.

The longer your warranty or guarantee, the less likely you will have to pay for repairs.

Longer warranties indicate how confident a brand is that their boilers have a long-life expectancy otherwise they would be out a lot of money.

Warranties are usually only valid if a branded engineer is used to install the boiler, it is serviced once a year, and it is registered within 30 days.

Boiler prices

How far your money can stretch is a big factor in choosing a boiler.

A new boiler can cost between £2500 and £3800 for an internal, heat-only boiler, and between £3400 and £4500 for an internal combi boiler.

There are, however, flexible payment schemes and government home energy grants to consider.

It is not only the upfront cost that you need to take into account, but the running cost too.

The average running cost for a gas boiler starts at £90 per month and an oil boiler costs around £83 per month.

Space for a boiler

How much space you have to house a boiler will dictate what size of boiler you can get.

If you live in a flat or small property, a combi boiler which will fit in a cupboard out of the way will be better.

Boiler efficiency rating

New boilers carry an ErP energy label which rank it from A to G. Most new boilers will have an A rating but there is also a SEDBUK rating system which gives a percentage, making it easier to see which boiler is more efficient. For new boilers it will range from 80% to over 90%. The more energy efficient your boiler is, the less heat is wasted and the more money you save.

Our top 6 boiler brands

Worcester Bosch

Worcester Bosch are the UK market leaders in domestic boilers.

You’ll find Worcester make it to the top of most lists for being a quality boiler brand for their reliable boilers, customer service, and their long warranty.

They have even received a Royal Warrant for supplying boilers to Her Majesty The Queen’s Sandringham Estate.

Who makes Worcester boilers?

Founded in 1962, Worcester has its headquarters and manufacturing in the UK.

What boilers do Worcester make?

Worcester has a range of gas and oil boilers, hot water cylinders, heat pumps, and solar water heating systems.

Their boilers come in gas, propane, and oil and they have combi boilers, system boilers, and regular boilers.

Some of their Greenstar range has wireless connectivity with the thermostat and easy-to-use colour displays.

What warranty or guarantee do Worcester have?

When you get your boiler installed with a Worcester accredited installer, such as Add Heat, you get an extended warranty of 12 years. The longest guarantee you will get with a boiler.

Worcester Bosch Review Rating

Worcester Bosch earns a 4.6 rating out of 28,826 reviews on Trustpilot.

Grant

GrantUK have been manufacturing heating products for nearly four decades and have won awards for their oil-fired condensing boilers.

They are endorsed by The Energy Saving Trust which promotes energy efficiency.

Grant state they have developed some of the most efficient oil-fired boilers in the UK, achieving energy efficiencies of up to 94.5% which reduce bills, and carbon emissions.

Who makes Grant boilers?

GrantUK was founded in 1970 by Stephen Grant and they are made in the UK.

What boilers do Grant make?

They have Vortex and Vortex Blue oil-fired condensing boilers for internal, external, combination, boiler house, and wall hung models.

What warranty or guarantee do Grant have?

Grant offer warranties from 3 to 10 years, depending on the specific boiler.

Grant Review Rating

Grant received a 4.4 rating out of 1,990 reviews om Trustpilot.

Valliant

Valliant are classed as a Superbrand, joining companies such as Rolls Royce and Coca-Cola.

They were the first heating tech product to be awarded the Quiet Mark approval, but other heating companies now also have this.

Who makes Valliant boilers?

Valliant were founded in 1874 in Germany.

What boilers do Valliant make?

Valliant offer a range of gas boilers, combi boilers, system boilers, and regular (open vent) boilers.

What warranty or guarantee do Valliant have?

Valliant offer guarantees from 2 up to 10 years.

Valliant Review Rating

Valliant received a 4.6 rating out of 16,276 reviews on Trustpilot.

Ideal

Ideal Heating is endorsed as a Which? Trusted Traders approved service.

Just like Valliant they have also been awarded the Quiet Mark approval and are endorsed by the Energy Saving Trust.

Who makes ideal boilers?

Founded in 1906, for over 100 years they have been manufactured in the UK.

What boilers do Ideal make?

Ideal have a range of combi boilers, system boilers, and heat only boilers.

What warranty or guarantee do Ideal have?

Ideal have a warranty of 2 to 12 years.

Ideal Review Rating

Ideal have a 4.8 rating out of 16,254 reviews on Trustpilot.

Viessmann

Viessmann are a family-owned company with a Which? Best Buy status.

Just like other German products, their boilers are engineered to be quiet and efficient, with the company putting an importance on innovation.

Who makes Viessmann boilers?

Made in Germany, this company was founded in 1917 and had a UK office since 1989.

What boilers do Viessmann make?

Viessmann offer gas condensing and oil condensing boilers.

What warranty or guarantee do Viessmann have?

The warranty for Viessmann boilers ranges from 3 to 12 years.

Viessmann Review Rating

Viessmann have a 4.5 rating out of 3,182 reviews on Trustpilot.

Baxi

Baxi are a part of BDR Thermea which is one of Europe’s largest companies for domestic and commercial heating systems.

Who makes Baxi boilers?

Baxi have been around since 1866 and are manufactured in the UK.

What boilers do Baxi make?

They have a range of natural gas and LPG combi boilers, system boilers, and heat only boilers.

What warranty or guarantee do Baxi have?

Baxi boilers offer a 3 to 10-year warranty.

Review Rating

Baxi has a 4.5 rating out of 10,341 reviews on Trustpilot.