Vaillant accredited boiler installation in London
Vaillant boilers with extended guarantees, installed for businesses and homes across all of London. Sizing survey first, then a fixed written quote.
Priced on surveyWritten quote before anything is booked
Gas Safe registered · 4.9 average from 229 reviews · £10m insured · 12 month guarantee
The survey comes first
Our boiler installation in London starts with a sizing survey, then a written recommendation, then a fixed written quote before anything is booked. If a repair would serve you better, we say so and quote aboiler repair instead.
We are Vaillant accredited installers, so the Vaillant boilers we fit carry extended guarantees, registered by us on your behalf. The work is done by Gas Safe registered, City & Guilds qualified engineers, backed by a 12 month guarantee on all works and £10 million of public liability insurance.
What the installation includes
- Sizing survey: heat demand, radiators, hot water use, flue route, existing pipework
- Fixed written quote naming the boiler model and its guarantee
- Removal of the old boiler and any redundant tanks or pipework
- Installation by Gas Safe registered engineers
- Commissioning and certification
- Extended guarantee registered on Vaillant boilers
Keeping the guarantee valid
Manufacturers require an annual service by a Gas Safe registered engineer. We carry out theboiler service each year, which is what keeps the guarantee valid. Our review record is public:4.9 average from 229 reviews, linked from the reviews page.
Commercial, domestic, high end and new build
Commercial heating is a named specialism: the same engineers install and replace commercial boilers in plant rooms and communal systems, covered on ourplant room maintenance page. Domestic work runs from straight swaps to full system changes in high end and new build homes. How we work withlandlords is set out on its own page.
We install across all of London.Priced on survey, with a written quote before anything is booked. For repairs, servicing and call outs,get a price shows the call out rate straight away.
Common questions:what a new boiler costs,the guarantee on a new boiler andthe hourly rate for repairs and call outs.
The record behind the work
A real job, and the review it earned
A boiler serviced every year, and the leaks in between
A customer who has had us back annually for the boiler service, and has also called us out for emergency leak work between visits. Booking is handled by the office and the paperwork follows promptly each time.
Reviews you can check
Rated 4.95 out of 5 on TrustATrader, and 9.95 out of 10 on Checkatrade from reviews left for CJ Plumbing & Heating, one of the two businesses that merged to form Neos. Every review is on a platform we cannot edit, and the links go straight to the originals.
Stars are drawn from each platform’s real score and never rounded up. The average is weighted by how many reviews each platform holds, and uses the lower of the two TrustATrader scores.
Book a boiler sizing survey
Tell the office about the property and your current boiler. You get a survey and a fixed written quote.
Boiler installation, answered
Do you install boilers in commercial buildings?
Yes. Commercial heating is a specialism of the firm. The same engineers install and replace commercial boilers in plant rooms and communal systems. Commercial jobs start with a site survey.
Do you only install Vaillant boilers?
Vaillant is our specialism. As accredited installers we register extended guarantees on the Vaillant boilers we fit. If the survey shows a repair is the better answer, we say so.
How long is the extended guarantee?
It varies by model and is confirmed with the fixed quote. We register it with Vaillant. An annual service by a Gas Safe registered engineer keeps it valid.
How do you decide what size boiler I need?
We measure. The survey covers heat demand, radiators, hot water use, flue route and pipework. The quote names the model and a fixed price. Nothing is booked until you agree.
Will you remove the old boiler?
Yes, with any redundant tanks or pipework agreed in the quote. The installation is commissioned and certified. All works carry a 12 month guarantee.