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Our Combi Boiler Range

If you’re looking for an efficient boiler that delivers central heating and hot water in an instant, then a combi boiler could be the right choice for you. Our range of combi boilers deliver excellent performance, efficiency, and control meaning reduced bills and energy usage.

Built in our RoSPA gold award-winning Derbyshire manufacturing plant, all of our boilers are extremely quiet, so much so that most have been Quiet Mark accredited meaning that the clanging, banging, boiler noises are a thing of the past to help you enjoy a less stressful domestic soundscape.

Learn more about the Vaillant combi boiler range below.

ecoTEC exclusive with Green iQ combi

Our premium combination boiler

  • Winner of the Housebuilder Products Awards 2018
  • The best in boiler performance, control, and efficiency
  • Eco-friendly and 85% recyclable
  • Fully compatible with vSMART™ heating control


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ecoTEC plus combi

The all-rounder for every home

  • Precision heating to reduce your bills
  • Delivers hot water in just five seconds
  • 5-year guarantee as standard
  • ErP efficiency rating of “A”


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ecoTEC plus combi store

High-performance for larger homes

  • The perfect solution for homes with 3-4 bedrooms
  • Integrated hot water storage delivers up to 20 litres of hot water per minute*
  • High efficiency pump for reduced energy consumption
  • ErP efficiency rating of “A”

*Dependent on the distance of the boiler from the taps


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ecoTEC pro combi

Smart heating for mid-size homes

  • Perfect for homes with up to 3 bedrooms and 1 bathroom
  • Precision heating to reduce your fuel bills
  • Fully compatible with vSMART™ heating control
  • ErP efficiency rating of “A”


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ecoFIT pure combi

Compact yet mighty

  • Compact enough to fit in a kitchen cupboard
  • Precision heating to reduce your fuel bills
  • 2 years guarantee as standard
  • ErP efficiency rating of “A”


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What is a combi boiler?

A combination, or ‘combi’ boiler does two things; heats water and provides central heating for your home in one compact unit.

How does a combi boiler work?

To heat hot water a combi boiler works by taking water directly from the mains, igniting the gas burner and heat exchanger, and transfers this energy to the water to heat it up within seconds.

To heat your home, a combi boiler uses control valves to allow water to flow through your central heating system at your desired temperature. When hot water is required, the control valves will divert the hot water to your hot water tap as needed.

What are the benefits of a combi boiler?

Combi boilers are one of the most popular choices for homeowners in the UK due to their size, efficient delivery of central heating and hot water, and lower installation costs.

Their compact size means that they don’t dominate the room as some alternatives might do. Also, unlike system boilers and regular boilers, a combi boiler doesn’t need a water tank or hot water cylinder to deliver hot water around your home. Hot water cylinders take up extra space which some smaller homes may not have, which is why a combination boiler is often favoured by homeowners. With no need for a hot water cylinder, less pipework is needed to install a new or replacement combi boiler making installation typically cheaper than system or regular boilers.

Combi boilers are available in a range of sizes and outputs, making them suitable for everything from studio flats all the way up to large family homes with multiple bathrooms. If you have any questions about what boiler is best for your home you can talk to our support team on 0330 100 3150 for free, no-obligation, advice.

Learn more about combi boilers

When it comes to boilers, we’re the experts but it’s your home. This is why we’ve asked our experts to share their knowledge with you to help you make the right decision for you, your home, and your family.

  • What is a combi boiler? if you're looking for more information on combination boilers, including the advantages of a combi boiler, points to bear in mind, expected lifetime of a combi boiler and more.
  • All About Boilers will help you understand how the different types of gas boilers work, and what the right choice is for you.
  • Alternative Energy Solutions if you are interested in exploring the alternatives to gas including environmental heat energy and solar thermal options.

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