A-Rated Boilers

The Red Van Plumbers are passionate about green technologies and we offer a full range of eco-friendly solutions through a dedicated division, the Heppelthwaite Green Building Solutions. Biomass boilers, A-rated boilers and solar are just some of the solutions we offer.

A-rated boiler

In most home and business property heating systems, a boiler heats the water, which is then pumped around the property to radiators, and also provides the hot water to kitchen and bathroom taps.

According to a 2017 research paper, your boiler accounts for up to 60% of what you spend annually on energy bills. Upgrading to an efficient condensing boiler can make a massive impact to your fuel bill and carbon emissions. By extracting heat from the flue gases, modern A-rated boilers are now over 90% efficient.

So, what is an A-rated boiler?

In the UK, boilers are rated on a scale from A to G. The A-rated boilers are considered as the most energy-efficient, with the G-rated boilers at the bottom of the pile as the least environmentally friendly. Therefore, highly efficient A-rated boilers allow you to save on energy bills. This, together with the reduction in carbon emissions makes A-rated boilers a great investment.

A-rated boiler energy rating

According to the Seasonal Efficiency of a Domestic Boiler in the UK scale (SEDBUK scale), A-rated boilers are 90% or more energy efficient.

Benefits of a Modern A-Rated Boiler

There are several benefits to having a modern a-rated boiler in your property:

  • Reduced fuel and energy bills
  • Reduced carbon emissions
  • Long warranties and durability (most A-rated boilers come with a 5 year warranty)
  • Modern boilers are better designed, making them easier to maintain and repair
  • A-rated modern boilers are often smaller, freeing up valuable space in your property.
  • Potential benefits from the RHI (Domestic Renewable Heat Initiative)
  • For all the reasons listed above, A-rated boilers give you a great return on investment

More than Just a Green Solution

Replacing your old boiler with an A-rated condensing boiler can prove to be highly beneficial to your month-on-month costs as well as your energy-efficiency. Together with playing your own part in the protection of our planet, you will be saving noticeable amounts of cash. This justifies the moderate initial investment in replacing an existing boiler system.

A modern condensing boiler has a larger heat exchanger, and as a result it recovers much more heat, and sends the cooler gases through the flue. Often, these flue gases are cool enough so that the water vapour condenses out, which is where the term “condensing boiler” actually comes from. When this process occurs, energy is recovered via the vapour, and the energy-efficiency of the A-rated boiler improves even more.

What are the best A-rated boilers?

Now that you are aware of the benefits of installing an A-rated boiler, let’s deep into the best condensing boilers in the market.

Worcester Bosch

Worcester Bosch is an industry leading and award winning boiler manufacturer. This leading manufacturer has built an impressive reputation manufacturing high quality and reliable A-rated boilers, as well as providing excellent customer care.

Glow Worm

Glow Worm create innovative and dependable boilers which will help you to use fuel efficiently and lower your carbon footprint, looking after both the environment and your pocket. More importantly, Glow Worm A-rated boilers have a long warranty of 7 years, making these boilers an extremely safe investment. In addition, Glow Worm boilers


Boilers from Vaillant offer outstanding performance with low energy consumption and ultra-quiet operation. Vaillant’s A-rated boilers are very high-end and they are usually more expensive than the alternatives above. However, if you’re after a modern, condensing boiler with amazing quality, then this is a great option for your property.

Boiler Installation

a-rated boiler installation

We have teamed up with the leading manufactures to ensure we are able to provide our customers the best A-rated boiler option for their homes, and at amazing prices.

Please check out our latest offers, and review some of the boilers we are able to provide.

For more information on A-Rated boilers or any of our boiler and heating services, please call us 01628 533 550. Alternatively click below and book an appointment online.


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