Boiler Installation in Harrow
Gas Safe registered (No. 623092) boiler installation and replacement in Harrow. Rated 5.0 from 240+ Google reviews.
Free home survey, then a written quote naming the exact boiler, at a price that does not change. Vaillant Advance Platinum, Baxi Approved and Worcester Bosch installer, almost a decade installing heating across North West London, and you deal directly with the founder, Ravinder Singh.
ਪੰਜਾਬੀ ਵਿੱਚ ਗੱਲ ਕਰੋ. English, Punjabi, Hindi and Urdu spoken, so the whole family can ask questions in the language they are most comfortable with.
Your local gas & heating
specialists
Across Harrow's 1930s-to-1960s semis and detached family homes, DGN GAS replaces ageing back boilers and installs modern heating sized to the property. Our Gas Safe registered, F Gas qualified team covers boilers, Megaflo cylinders, underfloor heating and air conditioning right across Harrow.
From luxury homes and high-end renovations to family homes and first-time buyers — every job carried out to the same uncompromising standard.
Gas & heating engineers
across Harrow
Harrow is a large residential borough with a strong family home market — predominantly semi-detached and detached properties built between the 1930s and 1960s, alongside a significant newer apartment stock closer to Harrow town centre. Many Harrow homes are large enough to benefit from a Megaflo unvented cylinder rather than a combi boiler — delivering mains-pressure hot water to multiple bathrooms simultaneously. Our team regularly installs full heating and hot water systems across Harrow for families upgrading older back boiler systems or moving into newly purchased homes.
We cover all of Harrow including Harrow on the Hill, Kenton, Wealdstone, North Harrow, Pinner, Rayners Lane, Stanmore, Harrow Weald and Hatch End.
Recent work in and
around Harrow
Stanmore
Baxi 800 combi serviced and repaired in one visit, October 2026.
Harrow
Baxi system boiler with a Megaflo unvented cylinder fitted in the loft, plus a water softener and air conditioning.
Stanmore
Vaillant ecoTEC Plus system boiler with a Megaflo unvented cylinder, underfloor heating, a water softener and Heatmiser controls.
Harrow
Baxi boiler installation for a homeowner, plus annual servicing and gas safety checks on his rental properties in the borough.
Harrow
Vaillant combi boiler installation.
Harrow
New boiler installed with a powerflush and replacement pipework, completed in one day.
What we install
in Harrow
Boiler Installation
New boiler installation and replacement across Harrow. Worcester Bosch, Vaillant, Baxi and ATAG supplied and fitted. Full Gas Safe certification and manufacturer warranty registration.
Megaflo & Cylinder Installation
Megaflo and unvented hot water cylinder installation in Harrow. Megaflo specialists — our work was featured in the Megaflo installer campaign.
Heat Pump Installation
Air source heat pump installation in Harrow. Government grant up to £7,500 available. F Gas qualified engineers.
Underfloor Heating
Wet underfloor heating for new builds, extensions and renovations across Harrow. Full system design and installation.
Air Conditioning
Split system and multi-room air conditioning installation in Harrow. F Gas qualified. All major brands supplied and installed.
Central Heating
Full central heating system installation and upgrades across Harrow. New systems, extensions and heat pump ready installations.
Local servicing across
Harrow
As well as installations, our team covers Harrow for annual boiler servicing, boiler repairs, gas safety certificates (CP12) and emergency callouts. One trusted local engineer for everything — from the initial installation to annual servicing years down the line.
Boiler Servicing
Annual boiler service by Gas Safe registered engineers to keep your boiler safe, efficient and under warranty.
Gas Safety Certificates
CP12 gas safety certificates for landlords across Harrow. Digital certificate issued same day.
Boiler Repairs
Fast diagnosis and repair of boiler faults across Harrow. Fault finding and repair on all major boiler brands across Harrow.
Emergency Callouts
Heating broken down? We respond to emergency callouts across Harrow as quickly as possible.
The right engineers
for Harrow
Gas Safe Registered & F Gas Qualified
All gas work carried out by Gas Safe registered engineers. Registration No. 623092. F Gas qualified for air conditioning and heat pump installations.
Registered with the Major Manufacturers
Baxi Approved, Vaillant Advance & Worcester Bosch Installers. Manufacturer warranties fully protected on every installation.
240+ 5-Star Google Reviews
Verified five-star reviews from homeowners, landlords and families across London. Read them on our Google Business Profile.
English, Punjabi, Hindi & Urdu Spoken
Our team serves clients in English, Punjabi, Hindi and Urdu — ਪੰਜਾਬੀ ਅਤੇ ਹਿੰਦੀ ਵਿੱਚ ਵੀ ਗੱਲ ਕਰ ਸਕਦੇ ਹਾਂ
How a boiler installation
with us works
Call or message
Tell us about your current boiler and your home. We may ask for a few photos or a short video if possible, which helps us give you a rough price over the phone, then we book a free home survey.
Free home survey
We check the boiler position, flue route, radiators, pipework and water pressure, and talk through combi versus system boiler and cylinder for your home.
Written quote, price fixed
The quote names the exact boiler and materials and sets out the work. The price we state is the price of the job.
Installation and handover
Installed and commissioned, the system flushed and inhibitor added, Benchmark completed, Building Control notified and the manufacturer's warranty registered by us.
Get a Free Quote
Serving Harrow
Boiler installation
in Harrow
We have a 1930s semi in Harrow with an old back boiler. What's the best replacement?
Our Harrow house has three bathrooms. Will a combi cope?
Which parts of Harrow do you cover?
How does a boiler quote from DGN GAS work in Harrow?
Reviews from Harrow homeowners.
"I’m based in Harrow. I have used Rav and his team for a long time and will continue to do so. Installed a new Vailant boiler and serviced an Baxi boiler. Powerlush for both as well. Fast efficient and the charges are always reasonable. I can’t recommend DGN highly enough."
"Harrow valiant.just installed new valiant boiler.very happy the team very friendly and polite excellent customer service"
"...Job was done immaculate, clean and in 1 day. Peace of mind. Thank you."
We also cover nearby
DGN GAS works right across West, North West and South West London. If you're close to Harrow, we also serve:
Need a gas engineer in Harrow?
Call 07813 474638 for a free home survey and a written quote at a price that does not change. Most installations booked within the week.
Get a Quote 07813 474638