New combi, system and conventional boiler installations by Gas Safe registered engineers. All major brands supplied and fitted — London and surrounding areas.
Whether your existing boiler has broken down beyond repair, you're upgrading to a more efficient model, or you're installing heating in a new property — DGN GAS provides a professional boiler installation service across London and surrounding areas.
We supply and install all major boiler brands including Worcester Bosch, Vaillant, Baxi and ATAG — brands we are fully accredited to install. Every installation is completed to Gas Safe standards and all new boilers are registered with the manufacturer for warranty purposes.
ATAG is a premium Dutch boiler brand offering 12 years warranty as standard, extendable up to 18 years with qualifying add-ons. We supply and install ATAG boilers across London.
Not sure which type suits your property? We'll assess your home and recommend the right solution before any work begins.
Provides central heating and instant hot water from the mains — no cylinder or tank required. Ideal for flats and smaller properties.
Works with a hot water cylinder. Ideal for homes with multiple bathrooms or higher hot water demand.
Works with both a cylinder and cold water tank. Often the right solution for older heating systems.
Call us and we'll talk you through the options based on your property, hot water needs and budget — no obligation.
We discuss your requirements, assess your property and recommend the right boiler — no pressure, no obligation.
An itemised quote covering the boiler, all parts and labour. No hidden costs. We book at a time that suits you.
Engineers arrive on time, protect your home and complete the installation to Gas Safe standards. Old boiler removed.
Full system test, walk-through of your new boiler and controls before we leave.
Gas Safe certificate issued and boiler registered with the manufacturer from day one.
Questions after installation? We're here — as our reviews confirm.
As accredited installers for the UK's leading boiler brands, we supply and install the full range from each manufacturer. Some of the most popular models we install:
Worcester Bosch's market-leading range. The 4000 is an excellent mid-range combi; the 8000 series is premium with smart controls included. Both carry a strong warranty when installed by an accredited engineer.
Vaillant's flagship range — consistently rated among the most reliable boilers in the UK. The ecoTEC Plus 832 and 838 are popular choices for larger homes. High efficiency and a strong warranty as a Vaillant Advance Installer.
Reliable, efficient and competitively priced. The Baxi 400 and 800 series offer excellent value without compromising on quality. Popular choice for landlord properties and family homes.
Premium Dutch engineering with up to 18 years warranty available. ATAG is less well-known in the UK but respected by engineers for its build quality and longevity. An outstanding long-term investment.
Most like-for-like boiler replacements are completed in a single day — typically 4-6 hours. More complex installations involving system changes, new pipework or cylinder installation may take 1-2 days. We'll give you a clear timeframe when we quote.
Yes — removal and disposal of your old boiler is included in every installation. We leave the property clean and tidy, with no old equipment left behind.
It depends on your property, budget and hot water demand. Worcester Bosch and Vaillant are both excellent mid-to-premium options with strong reliability records. For premium longevity, ATAG offers up to 18 years warranty. We'll recommend the right brand and model for your specific situation — not just the most expensive option.
Warranties vary by brand — typically 5-12 years as standard, with some brands offering extended warranties when installed by an accredited engineer. As accredited installers for Worcester Bosch, Vaillant and Baxi, we ensure you receive the full manufacturer warranty on every installation.
If your existing system has sludge or debris — indicated by cold spots on radiators or discoloured water when bleeding — a power flush is recommended before installing a new boiler. Most manufacturers also recommend it. We'll assess your system and advise honestly — we won't recommend one if it isn't needed.
Yes — every boiler installation we carry out is completed by Gas Safe registered engineers and a Gas Safe certificate is issued upon completion. Registration No. 623092, verifiable on the Gas Safe Register.
Free, no-obligation quote
"Ravinder Singh provided the best customer service we've ever experienced. Professional, punctual, and genuinely caring — he went above and beyond to ensure everything was perfect on a new boiler install. Truly outstanding work!"
"DGN Gas installed a new Baxi Boiler for me in February 2021, they have serviced and carried out the landlord gas safety inspections ever since. Excellent professional service. Extremely satisfied."
Call us today for honest advice and a no-obligation quote. London & surrounding areas.
07813 474638