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Tricky Boiler Installations:

Difficult, long, inaccessible boiler flues & new gas pipe runs for new boiler installations in South & West London

London properties, particularly those within the extended ULEZ zone, are much more likely to pose new boiler installation obstacles and challenges than properties further out, whether that be suburbs, smaller towns, villages or countryside.

This is generally a result of trickier access due to the age and configuration of properties – Access to the boiler flue, the gas pipework running through the property or the fabric of the building and the position of the gas meter. And locating the water stopcock. As London properties are tight for space, often terraced or flats several stories up this means getting to the outside of the building where the flue exits can be far from straightforward.

Lots of London’s Victorian properties and mansion blocks have been altered, renovated, re-fitted, re-decorated, had lay-out changes, you name it, over the last 100+ years of their existence so that locating where essential supply pipes are and how they can be accessed and worked on can often prove a challenge.

Some property owners have no idea where their main stopcock is, whether they share it with other properties in the block, whether it actually works or if they have the tools to get to it and turn it. There are still plenty of old buried lead mains with seized valves and stopcocks on lurking under London streets and in London cellars or basements.

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WPJ Heating have been rising to this challenge for over 20 years
in SW, SE and W postcodes in the capital.

Hidden and boxed in gas & water utility supply pipes are our speciality.
Restoring and updating Victorian plumbing so that it is safe and functional for modern city living.

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New Flue Installation

All gas boilers need servicing and maintenance over their lifetime and they also will eventually need replacing at some point too. All new boilers must have a new flue installed too. So flue access is paramount. Due to space constraints and home-owners wanting to maximise the available space in their premises, we encounter boilers tucked away and hidden in the most inappropriate spots – in tight concealed high level voids and loft eaves, behind panelling or right at the back of kitchen corner units under worktops. It’s then up to us to service and check them for safety which means getting up and in to find and trace them. We can then advise the customer accordingly.

Installing a new flue for a boiler in such positions can also be challenging. The flue may run through concealed voids that require opening up or may exit high up the building meaning a scaffold or special techniques are needed to reach it, replace it and make sure it is weatherproof externally. They may also run up old chimneys or through other people’s flats – both of which can mean potentially dangerous situations.

The gas meter or water stopcock feeding many London properties may be hidden or remote. Again we are experts in locating these. Meters may be in different parts of the block, in car ports or locked basements, or in under street vaults. Liaising with property management and porters to help locate them is a common occurrence for us.

We are experts with all of this!

We even use rope access and abseilers on the exterior if needs be. Access to other neighbouring properties is a further challenge we face. Rear gardens belonging to a flat underneath the property may need to be accessed so we can get ladders through or make good any building fabric that needs addressing.

Lots of new boiler installations need adjustments, alterations or upgrades to the old gas pipe serving the appliance. New boilers combust and use gas in a different way and this often means we need to run new sections of gas pipe up through the property from the gas meter to the boiler. This again takes experience and know how to carry out in the least disruptive way possible if drilling through rooms, communal hallways, up the exterior of buildings. We aim to minimise any making good or re-decoration required by the homeowner.

  • We have a tried and tested solution on hand for pretty much all scenarios as there’s not much we haven’t seen given the 20,000 London homes we have worked in so far.
  • We have completed 5000 London new boiler installations and still look after many of those happy 5000 customers.
  • Lack of parking proximity to the job, traffic wardens, red routes, ferrying heavy tools and equipment in to premises, organising deliveries to site are all part of the job no matter if flats and apartments are high up in buildings with no lifts.
  • We are your central London new boiler specialists.
  • We are the go-to experts for overcoming taxing plumbing and heating jobs in London’s older properties.

The complexity of these jobs in London should not be overlooked. Even when the actual boiler replacement is straightforward enough, there will likely be several unusual and unseen peripheral parts that we will overcome.

We always carry out an in person site survey to make sure we don’t miss anything. This sets us apart from online companies who may only do with online surveys and who are much more likely to be tripped up or caught out. This all causes delays, hassle and extra cost for the home owner. Better to choose WPJ as the right company for the job in the first place.

Read more about us and how we work

We Offer Up To 12 Years Guarantee on all Worcester Boilers

Why choose a Worcester accredited installer?

WPJ Heating’s boiler guarantee is unbeatable – Up to 12 years guarantee – Our company is a top level WAI – Worcester Accredited Installer. Worcester Bosch trains us and trusts us to install their products exactly like they intended. We can therefore give you up to 12 years guarantee on all Worcester Bosch boilers.

Fully trained independent Worcester specialists
Extended guarantees for extra peace of mind
Gas Safe Registered
Worcester Bosch Accredited

Accredited Installers

We are your local accredited installers in SW London for boilers by global industry leaders Worcester Bosch
and Vaillant. Here some popular boiler manufacturers we work with and install:

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See what our customers have to say about us…

290 reviews on
Richard Davison
Richard Davison
I was pleased with the service. Leaking loo. The plumber had a "can do" attitude and knew exactly what to do and what parts were needed. When the main repair was carried out it was done efficiently and professionally and quickly. I was also pleased that I could always get through to someone on the phone and that, instead of making me wait in, they could give me 45 mins notice of arrival so that I could leave work and get home to let plumber in. The call-out charge and the hourly rate were reasonable. I prefer to deal with a medium sized business than a one person outfit. Good job WPJ! Richard 23/10/2023
Paul Fegan
Paul Fegan
Fantastic service from the initial estimate for a new boiler through to installation. Can't recommend them highly enough.
Chloe Bass
Chloe Bass
I couldn't recommend the WPJ team highly enough. Choosing a new boiler felt like a daunting process, but the team were on hand to answer my questions, were quick to respond and an engineer came round and took a detailed assessment before giving me a very fair quote. The engineers who fitted the boilers were friendly, helpful and completed the work to a very high standard. They arrived on time and ran me through how to use my new boiler, and answered all my questions. I have found WPJ an extremely professional service, and I will certainly recommend them to friends and family in the future.
The Schralindos
The Schralindos
I cannot express how happy I am with WPJ Heating on performing a boiler installation. They are very professional, very responsive and their communication and planning was clear and concise. Any deviation to the plan was also communicated, explained and agreed. I definitely would recommended WPJ Heating to anyone as I was so happy with their first boiler installation, I had asked them to do another, on a more complex heating system, and was even more satisfied with their work.
Bernard Le Bourgeois
Bernard Le Bourgeois
Travail très professionnel et excellente ponctualité des équipes de WPJ Heating Services in London.
Michael Fish
Michael Fish
Friendly, professional, on time and responsive. Thank you so much.
Terence Murphy
Terence Murphy
All good. Good engineer, very tidy and clean. Completed all paperwork correctly. Pleased with results . Thanks.
Paul Baldwin
Paul Baldwin
Timely and efficient service. Would recommend.
Patricia Lopez
Patricia Lopez
The engineers came as soon as possible to sort out a fault on my boiler, did so professionally and thoroughly. I have boiler cover with WPJ and definitely happy with it.

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We Plant A Tree For Every Boiler We Install

As a company, we’re environmentally conscious. So it’s important to do what we can to reduce our carbon
footprint. That’s why we’re partnering with Trees for Cities, a UK based charity that’s working to make our city
green. With every boiler we install, we will plant a tree for you. We can’t save our planet alone but we believe
everyone should take small steps and do something.

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