S2 Plumbing & Gas
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Gas Safe registered · Worthing & West Sussex

Boiler installations

A new, high-efficiency boiler supplied and fitted properly - sized to your home, installed by Gas Safe registered engineers, and backed by a manufacturer warranty of up to 12 years (subject to make and model).

Get a fixed-price quote Call 07955 679873

What you get

Everything included in the price

One itemised, fixed-price quote covers the whole job. What is included and what is not is written down before we start, so there are no surprises when the invoice lands.

New boiler supplied, sized to your home - never oversold
Full Gas Safe registered installation and commissioning
Old boiler, tank and redundant pipework removed and disposed of
System flush and inhibitor to protect the new boiler
New filter, controls and thermostat where needed
Manufacturer warranty registered on your behalf
Building-control notification and Benchmark paperwork
Everything left clean, tested and demonstrated before we go

One price, agreed before we start

No day rates, no "while we were in there" extras. If something unexpected turns up we stop, explain it and price it with you first.

S2 engineer commissioning a Vaillant ecoTEC plus boiler, checking water pressure on the display
Commissioning, not just fitting. Pressures, flow and gas rate all checked and recorded before we sign the job off.
New Baxi 800 combi boiler installation with copper pipework Vaillant combi boiler installation Heating system pipework, insulated and valved

Is it time?

Six signs you need a new boiler

Repairs are stacking up

If you have called an engineer more than once in the last year, the repair bills are usually on their way to costing more than a replacement.

Radiators are slow or uneven

Cold spots, long warm-up times and a boiler that short-cycles are signs the system is working far harder than it should.

Hot water runs out

A cylinder that cannot keep up with the household, or a combi that drops pressure when two taps run, is undersized or worn.

It is 12+ years old

Older non-condensing boilers run far less efficiently than a modern A-rated unit, and parts get harder to source every year.

Rising energy bills

If your usage has not changed but your bills have climbed, efficiency losses in the boiler are a common cause.

Kettling, banging or leaks

Noise and any sign of water around the boiler need looking at straight away - never ignore them.

Our own work

Recent boiler installations

Every photo below is a job we have finished on the South Coast - lofts, cupboards, kitchens and awkward spaces. Look at the pipework, not just the boiler: that is where the standard shows.

See more of our work →
Baxi 800 combi boiler on new plasterboard with fully clipped copper pipework
Baxi 800 combi, Worthing. New utility wall, filter and full-bore isolation valves - every run clipped and levelled.
Baxi 800 boiler installed in a loft between roof trusses with insulated pipework
Loft relocation. Boiler moved out of the kitchen into the loft, pipework insulated and boarded for access.
Vaillant ecoFIT pure boiler installed in an airing cupboard
Vaillant ecoFIT pure. Fitted into an existing cupboard - tidy tails, new controls and the space left usable.
Close-up of copper heating pipework with magnetic filter and scale reducer
The detail underneath. Magnetic filter, scale reducer and labelled valves - so servicing later is straightforward.
Baxi Platinum Compact combi boiler installed in a kitchen
Baxi Platinum Compact. Straight kitchen swap in a day, Honeywell control fitted and the warranty registered.
Heating system pipework, insulated and valved
Full system upgrade. New pipework runs insulated, valved and labelled - the part of the job nobody sees.

Choosing the right unit

Which boiler suits your home?

We size the boiler to your property, your hot-water demand and how the household actually lives - not to whatever is easiest to fit.

Combi boilers

Heating and hot water on demand from one compact unit, with no cylinder or loft tank. Ideal for flats and homes with one bathroom.

System boilers

Works with an unvented cylinder to deliver strong mains-pressure hot water to several outlets at once. Best for busy family homes.

Conventional (regular) boilers

Retains the cylinder and feed tanks - often the right call for older properties with traditional pipework or low mains pressure.

Brands we fit as approved installers

Worcester Bosch Accredited Installer Vaillant Approved Installer Baxi Approved Installer

Good to know

Boiler installation FAQs

How long does a boiler installation take?
Most straightforward swaps are completed in a single day. Conversions and full system upgrades typically take two to three days, and we will tell you which yours is before you commit.
What warranty do I get?
As approved installers we can register manufacturer warranties of up to 12 years on qualifying boilers, subject to make and model. We handle the registration for you and explain what the warranty covers.
Which brands do you fit?
Mainly Worcester Bosch, Vaillant and Baxi. We will recommend the right unit for your home and budget rather than pushing whichever brand pays best.
Can you quote from photos?
Usually, yes. A few photos of the boiler, the flue and the pipework - plus a short video walking us round - is enough for most swaps. For conversions or awkward access we will come and see it properly first.
Do you handle the paperwork?
Yes. We notify building control, complete the Benchmark checklist and register the warranty, then leave the documents with you.

While we're in

We fit the bathroom too

A lot of our boiler customers come back for the bathroom. Same team, same standard - tiling, first and second fix, showers and unvented hot water, all under one quote.

See bathroom installations
Marble-tiled bathroom with LED mirror and wall-hung vanity unit Walk-in wet room shower with rainfall head and chrome towel rail

Accredited, insured & trusted across the South Coast

Gas Safe Registered Vaillant Approved Installer Baxi Approved Installer Worcester Bosch Accredited Installer Fully Insured & Guaranteed Proud BNI Member

Ready to get it done properly?

Send us a message or a couple of photos and we'll come back with a clear, fixed-price quote - usually the same day.

Request a free quote Call 07955 679873