Boiler Installation
Across London
New combi, system and conventional boiler installations by Gas Safe registered engineers. All major brands supplied and fitted — London and surrounding areas.
A new boiler installed
to the highest standard
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 install and register manufacturer warranties for. Every installation is completed to Gas Safe standards and all new boilers are registered with the manufacturer for warranty purposes.
Up to 18 years
manufacturer's warranty
ATAG — among the longest warranties in the UK
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.
Which boiler is
right for your home?
Not sure which type suits your property? We'll assess your home and recommend the right solution before any work begins.
Combi Boiler
Provides central heating and instant hot water from the mains — no cylinder or tank required. Ideal for flats and smaller properties.
System Boiler
Works with a hot water cylinder. Ideal for homes with multiple bathrooms or higher hot water demand.
Conventional Boiler
Works with both a cylinder and cold water tank. Often the right solution for older heating systems.
Not Sure?
Call us and we'll talk you through the options based on your property, hot water needs and budget — no obligation.
What to expect from
your installation
Initial Consultation
We discuss your requirements, assess your property and recommend the right boiler — no pressure, no obligation.
Clear Quote
An itemised quote covering the boiler, all parts and labour. No hidden costs. We book at a time that suits you.
Installation Day
Engineers arrive on time, protect your home and complete the installation to Gas Safe standards. Old boiler removed.
Testing & Handover
Full system test, walk-through of your new boiler and controls before we leave.
Certification & Warranty
Gas Safe certificate issued and boiler registered with the manufacturer from day one.
After Sales Care
Questions after installation? We're here — as our reviews confirm.
Boilers we install
across London
We supply and install the full range from each of the UK's leading boiler brands. Some of the most popular models we install:
Greenstar 4000 & 8000
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.
ecoTEC Plus & ecoTEC Exclusive
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.
Baxi 400 & 800 Series
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.
ATAG iC & iS Series
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.
Get in Touch
Free, no-obligation quote
Boiler installation across West & North-West London
We install and replace boilers right across the areas we know best. In central West London that takes in boiler installation in Southall, new boilers in Ealing, Hounslow boiler replacements, boiler fitting in Acton, Chiswick, Hammersmith, Shepherd’s Bush and Hanwell.
Out towards Hillingdon we cover new boilers in Uxbridge, Hayes, Harlington, West Drayton and Ickenham; and across the north-west, boiler installation in Harrow, Wembley, Stanmore, Sudbury, Greenford, Perivale and Northolt.
Common questions about
boiler installation
How much does a new boiler cost in London?
How long does a new boiler installation take?
Which boiler is best — Worcester Bosch, Vaillant or Baxi?
Do you install boilers in my area?
What warranty do I get with a new boiler?
Should I get a combi or a system boiler?
Are you Gas Safe registered?
Do you remove and dispose of my old boiler?
"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."
Ready to discuss your boiler installation?
Call us today for honest advice and a no-obligation quote. London & surrounding areas.
Get a Quote 07813 474638