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1 October 2020

Main Boiler Guide

Find out how reliable Main boilers are, what owners think of their Main boilers and what trusted boiler engineers make of the Main brand
Matthew Knight

Main has more than 75 years' experience in the UK domestic gas boilers market, and says it provides excellent service and care to customers. Main is part of the BDR Thermea group, which operates in more than 70 countries worldwide.

The Main range of boilers is exclusively available from independent heating and plumbing merchants, and includes the Main Eco Elite Combi and Main Eco Elite System. You can find more details about the individual products in these ranges in our Main boiler reviews.

More than 7,000 members of the general public take part in our annual boiler brand reliability and customer satisfaction survey, enabling us guide you to the best and worst boiler brands. We also conduct a survey with more than 153 trusted boiler engineers to get their independent views on which boiler brands are the best.

Which? verdict on Main boilers

Below, we've collated all of our survey results for Main boilers, including how their owners rate them, what trusted heating engineers think of their build quality and much more.

Which? members can log in to view what owners and engineers make of Main in the table below. If you're not already a member, sign up for a trial to Which? to unlock our table. You'll also get access to all of our online reviews, including our boiler reviews.

How good are Main boilers?
Brand data for Main boilers

Overall score

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Customer score
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Engineer recommendation
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Build quality
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Availability of parts and spares
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Ease of fixing a common fault
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Ease of servicing
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Table notes

The reliability and customer score are based on responses from a May and June 2020 survey of 7,500 boiler owners.

Engineer recommendation, build quality, availability of parts and spares, and ease of fixing a common fault and ease of servicing are based on responses to a June 2020 survey of 153 Which? Trusted Traders heating engineers.

How much do Main boilers cost?

Main Heating does not sell boilers direct to consumers. They are supplied to Gas Safe-registered installers through plumbing and heating merchants. Main boilers cost from in the region of £570 to £750, depending on type and output. The cost of installation will vary from home to home and depends on the amount of work the installer needs to do to complete the installation to Building Regulations standards.

Main boilers installation

Expect to pay up to £1,500 for a new boiler in a new position. See our guide to the cost of installing a boiler for more.

Main servicing and warranties

Main offers warranties for boilers up to 10 years. For warranties to be valid boilers must be registered within 30 days of installation and the installer must complete the Benchmark Commissioning Checklist and give it to the householder when handing over the boiler. The boiler must also have an annual service.

The warranty terms and conditions can be found here and carry the Plain English Campaign Crystal Mark: http://warranty.baxi.co.uk/terms   

Boiler parts and repairs

Main boilers are backed by Baxi Customer Support and a nationwide network of its own fully trained Baxi engineers, providing help and support when you need it, 365 days a year. The services provided by the Baxi Customer Support engineers have been assessed and approved by Which? Trusted Traders.

Main contact details

You can contact Main at the following address: 


Brooks House, Coventry Road

Warwick, CV34 4LL

Email: info@mainheating.co.uk

Website: www.mainheating.co.uk

Main general enquiries

0344 871 1570

Main servicing and repairs

0344 871 1545