Intergas boilers review

We've revealed gas boiler brands' customer scores to Which? subscribers and non-subscribers alike.

Intergas gets a middling three-star customer score, which puts it behind a lot of other brands and ahead of others. But this only represents 20% of the overall total – a brand must also have a good record of reliability, plus engineer approval to be a Best Buy.

Only Which? members can access our full results. Log in now or join Which? to find out the best boiler brands and how Intergas boilers stack up against the competition. 

Intergas gas boiler score

While most (76%) Intergas boiler owners told us they were satisfied, this proportion is lower than average. 

It gets a middling three-star customer score.

But this is only 20% of the story. We survey boiler engineers to find out what they think of the brand, and include the results of our reliability study to complete the picture.

Find out the full results by subscribing to Which?.

Intergas boiler engineers' reviews

Only Which? members can see engineers' reviews of Intergas boilers.

We asked 230 expert engineers to score gas boiler brands on:

• The ease of sourcing spare parts 
• How easy it so to change a common component (a heat exchanger)
• The ease of servicing the brand's boilers
• The build quality of the brand's boilers
• The quality of technical support provided by the manufacturer
• Whether or not engineers would recommend the brand to consumers (we filter out incentivised and brand affiliated engineers).

We aggregate all of these scores and use them to create our 'overall engineers' score' which is 40% of our total brand score.

Which? members can see how engineers rated Intergas gas boilers on all of these tests by logging in, while others can sign up to Which? to unlock our full analysis.

Intergas boiler reliability

Boilers are major purchases you should only make once every 10 - 20 years. You can keep yours for longer if you get it regularly serviced and if you get faults fixed quickly.

We've asked people who bought a boiler in the past six years whether theirs is fault-free. When faults are reported, we measure how serious they are, how long it took for the first fault to happen, and we confirm that it was fixed by an engineer.

Using this data, Which? members can see which brands produce boilers that are less prone to fault than others.

Sign up for all the results.

Where to buy Intergas boilers

It's easy to rush into making a decision, especially if your boiler breaks down in winter, but we recommend getting a couple of quotes from a qualified heating engineer and comparing costs. Our Trusted Trader service can link you up with vetted boiler installers in your area.  

You could also buy a boiler yourself and hire an installer, though make sure you seek expert advice before doing so, to have your current heating system assessed and identify the type of boiler that meets your specific needs. 

If you buy a boiler without having an installer lined up, you could find yourself struggling to find someone willing to set it up for you. An installer may have access to trade or wholesale prices, and will be able to recommend a model based on a holistic assessment of your home and heating system.

Only a Gas Safe Registered engineer/installer can install a new boiler: it's both dangerous and illegal to do so yourself if you're not qualified.  

Where to buy a boiler – find out what your options are

Are Intergas boilers efficient?

New boilers must be A-rated, but how efficiently your boiler works in practice depends on several factors, including how you use it and how well it's installed. Use a Which? Trusted Trader for your boiler installation and regular maintenance.

Visit Intergas to find out more about Intergas boilers.