Gas Safe registered · Worthing & West Sussex
Full heating systems
Complete central-heating upgrades designed around your property - boiler, radiators, pipework, cylinder and controls, sized with a proper heat-loss calculation so every room heats evenly and your bills stay sensible.
What you get
One quote covers the whole system
A full system is more than a boiler swap - it is designed as one job. We survey the property, calculate the heat loss room by room, and quote everything in a single itemised, fixed price.
Designed once, priced once
No day rates, no "while we were in there" extras. Most full systems take two to four days - we tell you exactly how long yours will take before you commit.
Boiler swap or full system?
When a full system is the right call
The pipework is as old as the boiler
Fitting a new boiler onto corroded or undersized pipework carries the old problems straight into the new system - and can void the warranty.
Some rooms never get warm
Radiators that were never sized to the room, or a system that was extended piecemeal over the years, cannot be fixed by a new boiler alone.
You're renovating or extending
With floors up and walls open it is the cheapest moment you will ever have to renew pipework, add zones and put radiators where they belong.
The system is full of sludge
Black water, cold radiator bottoms and repeat pump failures point to years of corrosion. Past a certain point, replacement beats flushing.
Hot water can't keep up
A growing household often needs a different layout altogether - an unvented cylinder, a bigger boiler, or a move away from gravity-fed tanks.
You want proper control
Heating zones, smart thermostats and TRVs on every radiator only pay off when the system underneath is designed to use them.
Designed as one job
What goes into a full system
Every part is sized against the same heat-loss calculation, so the boiler, radiators and controls work together instead of fighting each other.
The boiler
Combi, system or regular - chosen for the property and hot-water demand, from Worcester Bosch, Vaillant or Baxi, with warranties up to 12 years.
Radiators & pipework
Radiators sized to each room's heat loss, TRVs throughout, and pipework renewed, insulated and clipped where the old runs are past it.
Hot water
An unvented cylinder for mains-pressure water to every outlet, or a combi where the household suits it - installed by G3-qualified engineers.
Controls & zoning
Smart thermostats and separate zones for living and sleeping areas - set up, demonstrated and left working before we leave.
Brands we fit as approved installers
How the job runs
From survey to handover
Survey & heat-loss calculation
We measure up room by room - insulation, glazing, hot-water demand - so the system is sized on numbers, not guesswork.
Design & fixed-price quote
You get an itemised quote for the whole system - boiler, radiators, cylinder, controls - with what's included written down.
Installation
Typically two to four days. Floors and furniture protected, water off for the shortest window we can manage, and the site left clean each evening.
Balance, commission & handover
Every radiator balanced, controls demonstrated, warranty registered and the Benchmark paperwork left in your hand.
Good to know
Full heating system FAQs
How long does a full heating system take?
Do I need a full system, or just a new boiler?
Will there be much disruption?
Can you add heating zones or smart controls?
What warranty comes with a full system?
Smaller job?
Just need the boiler?
If the rest of your system is in good shape, a straight boiler swap is quicker and cheaper - most are done in a day. Same engineers, same fixed-price quote.
See boiler installations
Accredited, insured & trusted across the South Coast
Ready to heat the whole house properly?
Tell us about the property and we'll arrange a survey - then come back with one clear, fixed price for the whole system.