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Scarlet Heating & Plumbing
Gas Safe RegisterGas Safe registeredFamily run · Llanelli based

Strong. Reliable.Local.

Heating and plumbing engineers covering Llanelli, Swansea and Carmarthen. We keep your home warm and your water flowing — with fixed prices, tidy work and advice you can actually act on.

Book an engineer07490 623966
Across three counties

12 towns

Across three counties

Workmanship guarantee

12 months

Workmanship guarantee

Both fuels, one team

Gas & oil

Both fuels, one team

Scarlet Heating & Plumbing branded service van outside a home in Llanelli

No heat or hot water?

Tell us when you call and we will get you into the diary as a priority.

  • Gas Safe Registered
  • Gas & oil boilers
  • Landlord CP12 certificates
  • Public liability insured
  • 12-month workmanship guarantee
  • Local engineers, local prices
  • Family run

Warmth · Water · Reliability

Two trades. One team who turn up.

Most companies do heating or plumbing well. Because we do both, nothing gets passed to a third party halfway through — and nobody blames the other trade when something is not right.

Heating & boilers

Heat that arrives when you ask for it

Boilers sized to the house rather than the catalogue, systems balanced room by room, and servicing that keeps the warranty alive. Gas and oil, install through to annual check.

Warmth — heating & boilers work by Scarlet Heating & Plumbing

What we do

Everything for the boiler, the heating and the pipework

Eight core services, all delivered by the same team, with guide prices published up front so you are not left guessing.
All services

Guide prices include VAT and are a starting point for a typical job. Your written quote is fixed once we have surveyed.

Why Scarlet

The bits that actually matter when someone is in your house

Anyone can fit a boiler. The difference is in how you are treated before, during and after — so these are the four things we hold ourselves to.
More about us

  • A price before the work, not after

    You get a written fixed quote for installations and a diagnosis-then-price approach on repairs. Nothing gets done until you have agreed the number.

  • The same faces every time

    We are a family-run outfit, not a franchise passing your job to whoever is nearest. You deal with the people who will actually be in your house.

  • Registered, insured, guaranteed

    Gas Safe registered for gas, OFTEC standards for oil, full public liability cover, and twelve months on our workmanship as standard.

  • Your house left as we found it

    Dust sheets down, boots off, old boiler and packaging taken away. The best compliment we get is that you cannot tell we were there.

How it works

Four steps, no mystery

You should never have to chase us to find out what is happening. This is the whole process.
  1. 01

    Tell us what is going on

    Call, book online or use one of our calculators. Describe the symptom in plain English — we will work out what it means.

  2. 02

    We survey and price it

    For installs we come out and measure properly, including your mains flow rate. For repairs we diagnose on site. Either way you get a number before we start.

  3. 03

    We do the work

    Booked to a date that suits you, on time, sheets down. Larger jobs get a day-by-day schedule so you know what is happening when.

  4. 04

    Commissioned, registered, guaranteed

    We demonstrate the system, hand over the paperwork, register the manufacturer warranty for you, and diarise your next service.

Start with a free quoteSee recent work

Areas we cover

Close enough to actually turn up

We work out of Swiss Valley in Llanelli. That puts most of Carmarthenshire and Swansea inside a comfortable drive — which is why we can offer same-week appointments rather than a fortnight's wait.

Check we come out to you

Priority

Llanelli, Burry Port & Swiss Valley

Our home patch. Breakdowns here usually get same or next working day.

Planned runs

Llandeilo, Gower & rural Carmarthenshire

Grouped into scheduled days, which keeps travel costs off your invoice.

Common questions

The things people ask us most

Straight answers, including the ones that occasionally talk you out of spending money with us.
All questions
How quickly can you come out?
Breakdowns in Llanelli, Burry Port and the surrounding villages can usually be seen the same or next working day, and Swansea and Carmarthen within a few days. Planned work such as a new boiler or a bathroom is booked to a date that suits you. If you have no heat or hot water, say so when you get in touch and we will prioritise it.
How much does a new boiler cost in South Wales?
A like-for-like combi swap typically starts around £1,850 fitted, a conversion from a system or back boiler to a combi is usually £2,600 to £3,600, and a full system with new pipework and controls goes higher. The honest answer is that the price depends on the boiler, the flue route, the state of the existing pipework and whether you want a filter and controls — which is exactly why we survey before quoting rather than guessing.
Is the price you quote the price I pay?
Yes. Installation and bathroom quotes are fixed and written down, including the boiler, materials, labour, removal of the old unit and commissioning. The only thing that changes the price is you changing the scope, or something genuinely hidden turning up behind a wall — and if that happens we stop, explain it and agree the cost with you before carrying on.
How often should a boiler be serviced?
Once a year. Nearly every manufacturer's warranty requires an annual service by a Gas Safe registered engineer, and missing one can invalidate cover on an appliance worth well over a thousand pounds. An annual service also catches the small faults — a sooting burner, a weeping seal, a failing expansion vessel — while they are still cheap.
What areas do you cover?
We are based in Swiss Valley, Llanelli, and cover Llanelli, Burry Port, Kidwelly, Cross Hands, Ammanford, Swansea, Gorseinon, Pontarddulais, Carmarthen, Llandeilo and the villages in between. If you are just outside that, ask — we travel further for planned work.

Let’s get it sorted.

Tell us what is wrong, or what you are planning. We will give you a straight answer and a real price — no pressure either way.

Book an engineer07490 623966
Call nowBook online