We use cookies to allow us and selected partners to improve your experience and our advertising. By continuing to browse you consent to our use of cookies. You can understand more and change your cookies preferences here.

Coronavirus Read our latest advice
Reviews based on facts
Our rigorous tests find the facts, and our impartial reviews tell you the truth about how products perform. First month £5, then £9.99 per month, cancel anytime.
Try Which?
1 October 2020

Alpha Boiler Guide

Find out whether we think Alpha boilers are a good investment. Our research reveals how reliable Alpha boilers are, and what their owners and heating engineers think of them
Matthew Knight

Alpha boilers have been available in the UK for the past 50 years, and the company says that choosing an Alpha boiler is an assurance of quality and the best technology money can buy.

Alpha offers a range of combi, heat-only, and regular and system boilers in a variety of sizes to suit almost any type of home. You can find more details about the individual products in these ranges in our Alpha 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 Alpha boilers

Below, we've collated all of our survey results for Alpha boilers. These results will tell you how their customers 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 Alpha boilers in the table below. If you're not already a member, sign up for a trial to Which? to unlock our table and get access to all of our online reviews, including our boiler reviews.

How good are Alpha boilers?
Brand data for Alpha boilers

Overall score

Reliability n/a
Customer score
Member icon
Engineer recommendation
Member icon
Build quality
Member icon
Availability of parts and spares
Member icon
Ease of fixing a common fault
Member icon
Ease of servicing
Member icon

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 Alpha boilers cost?

Alpha boilers can cost anywhere between £700 and £2,250, depending on the size and type.

Alpha boilers installation

Expect to pay up to £1,500 for a new boiler installed in a new location. For more information about how much you should expect to pay, see our guide to the cost of installing a boiler.

Alpha servicing and warranties

Alpha offers two-year, three-year, five-year or seven-year warranties on its boilers, depending on the accreditation level of the installer.

Alpha warranties

0844 871 8760

Alpha contact details

You can contact Alpha at the following address: 


Nepicar House

London Road

Wrotham Heath

Sevenoaks, Kent

TN15 7RS

Or through the Alpha website.

Alpha general enquiries

0844 871 8760