Central Heating
Installation London
Complete central heating systems — designed around your home and installed to a standard. From Megaflo high-flow hot water and underfloor heating to zoning and weather compensation, across London.
A bespoke heating system design —
not simply a boiler install
Anyone can swap a boiler. A central heating system that warms every room evenly, delivers hot water that never runs out and runs quietly and efficiently for twenty years is a different thing — it's designed. DGN GAS surveys your home, calculates the heat loss room by room, and engineers a complete system around it: the right heat source, correctly-sized emitters, high-flow hot water, zoning and controls. It's the work that separates a system that merely works from one you never have to think about. And on a larger project, we can design the home's plumbing and air conditioning alongside it — one firm, accountable for the whole home.
Every part of the system —
engineered to fit
Complete System Design
A heat-loss survey and full system design — heat source, emitters, pipework and controls sized precisely to your property, not estimated from a rule of thumb.
Megaflo & High-Flow Hot Water
Mains-pressure hot water to several bathrooms at once, from correctly-sized Megaflo and unvented cylinders — the difference a larger home feels immediately.
Underfloor Heating
Warm floors and even, invisible heat — designed into the system or zoned alongside radiators for the best of both.
Zoning & Weather Compensation
Independent control of different areas and weather-compensated flow temperatures — comfort where you want it, and no energy wasted where you don't.
Renovation & Extension Systems
New systems and extensions designed into a renovation and coordinated with your builder — so the heating fits the finished home, not the other way round.
Heat Pumps & Hybrid Systems
A system built around a heat pump from the outset, or a boiler system future-proofed for one later — correctly-sized emitters and pipework either way.
From heat-loss survey to
a home that just works
Heat-Loss Survey & Design
We survey the property and calculate heat loss room by room, then design a system sized to it — emitters, pipework, hot water and controls.
Specification & Proposal
A clear proposal covering the system, components and finish. Where it's part of a renovation, we coordinate with your builder and other trades.
Installation
Installed cleanly to Gas Safe standards — pipework, heat source, cylinder, emitters and controls — with your home protected throughout.
Commissioning & Treatment
The system is filled, pressurised, treated with inhibitor and commissioned — set up to run efficiently from the first day.
Balancing, Testing & Handover
Every emitter balanced for even heat, full testing and certification issued, and one firm accountable long after we've left.
Get in Touch
Free, no-obligation quote
Common questions about
central heating
Do you design complete central heating systems, or just fit boilers?
What makes a properly designed system different?
Can you deliver strong hot water to several bathrooms at once?
Can you install underfloor heating and zoning?
Can you upgrade or extend my existing central heating?
How much does a new central heating system cost?
"Have used DGN GAS a few times now. They installed a boiler at my parent's house and I had a boiler and underfloor heating installed at my house. Very happy with everything."
"I have had a heating system including a Vaillant boiler, Megaflo and underfloor heating installed by DGN GAS. A very professional service and am extremely happy."
Planning a new heating system?
Talk to us early — the best systems are designed in from the start, not bolted on. London-wide coverage.
Get a Quote 07813 474638