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Scarlet Heating & Plumbing

Heating & boilers

The forty-five minutes that protects your warranty

An annual service is not a tick-box exercise. It is a combustion test, a safety check and an early warning system — and on most modern boilers, skipping one is enough to void a warranty worth well over a thousand pounds.
Guide price
£75 including VAT
Time on site
45–60 minutes
You receive
A written record
Book a serviceCompare cover plans
Gas Safe engineer carrying out a flue gas analysis on a domestic boiler

Why bother

Four reasons, and only one of them is the warranty

Most people book a service because the paperwork says they have to. These are the reasons that actually save you money.

  • It keeps the warranty alive

    Nearly every manufacturer requires an annual service by a Gas Safe engineer, evidenced in writing. No record, no claim.

  • It catches cheap faults early

    A weeping seal, a tired expansion vessel or a sooting burner are all small jobs — until they take the heat exchanger with them.

  • It keeps combustion in tolerance

    A boiler drifting out of adjustment burns more gas for the same heat. The analyser reading tells us in about a minute.

  • It is a carbon monoxide check

    The reason gas servicing is regulated at all. We check the flue, the seals and the combustion products every visit, without exception.

No mystery

Exactly what we do, in the order we do it

Published in full, because 'we'll give it a service' means very little and you are entitled to know what you are paying for.
1

Before we touch anything

  • Visual inspection of the appliance, flue and its terminal position
  • Check ventilation and clearances still meet current requirements
  • Confirm the boiler is installed to manufacturer instructions
2

Combustion and gas

  • Flue gas analysis, with the readings recorded against manufacturer tolerance
  • Operating gas pressure and gas rate checked at the appliance
  • Tightness test on the gas installation where appropriate
  • Burner and injector inspected and cleaned
3

Inside the case

  • Heat exchanger checked and cleaned of debris
  • Condensate trap cleaned and the run checked for falls and frost risk
  • All seals and gaskets inspected for integrity
  • Electrodes checked, cleaned and gapped
4

The system around it

  • System pressure checked and topped up if needed
  • Expansion vessel charge tested and re-pressurised
  • Pressure relief valve and safety devices operated
  • Magnetic filter emptied and cleaned, where one is fitted
5

Before we leave

  • Full operational test on heating and hot water
  • Written service record with the actual readings on it
  • A plain-English verdict on anything starting to wear
  • Next service diarised and a reminder set

And you get the numbers

Not just a tick in a box. The actual combustion readings, gas pressure and operating figures, written down, so next year’s engineer can see whether anything has drifted.

Service plans

Pay once a year, or spread it

Three straightforward options. No auto-renewing traps, no cancellation fees, and we will tell you if the cover plan is not worth it for your boiler.

  • Annual Service

    The yearly check that keeps your warranty valid and your boiler honest.

    £75/ year

    Paid on completion of the visit

    • Full manufacturer-specification service
    • Flue gas analysis with printed readings
    • Gas pressure and flow rate test
    • All seals and safety devices checked
    • Expansion vessel charge verified
    • Written service record for your warranty
    • Reminder when next year's is due
    • Parts and repairs are quoted separately
    Choose Annual Service
  • Most popular

    Service + Cover

    The service, plus we absorb the call-out when something does go wrong.

    £145/ year

    Paid on completion of the visit

    • Everything in the Annual Service
    • Unlimited diagnostic call-outs, no charge
    • Priority slot on breakdowns
    • 10% off any parts fitted
    • System pressure top-up and rebleed included
    • Magnetic filter cleaned at each visit
    • Landlord certificate at a reduced rate
    • Parts are discounted, not free
    Choose Service + Cover

  • Landlord Care

    Certificate, service and access arranged with your tenant, on one schedule.

    £120/ year

    Paid on completion of the visit

    • Annual gas safety certificate (CP12)
    • Full boiler service in the same visit
    • We arrange access with the tenant directly
    • Certificate emailed to you and your agent
    • Automatic renewal booking each year
    • Portfolio pricing across multiple properties
    • Repairs quoted per job
    Choose Landlord Care

All prices include VAT. Cover plans exclude pre-existing faults and are subject to an initial service — we will always tell you before you commit.

The bit everyone forgets

Nobody remembers when their boiler was last serviced

It is a once-a-year job with no obvious trigger, so it slips — usually until something breaks in January and the warranty claim gets refused. We keep the diary so you do not have to.
  • We diarise your next service at the end of every visit
  • You get a reminder a month before it is due, by email or text
  • We offer you the slot; you say yes or move it. That is the whole system
  • Cancel the reminders any time — one click, no questions
Service record card and boiler benchmark book on a kitchen worktop

Straight answers

Servicing questions

Including the difference between a service and a safety certificate, which catches out a lot of landlords.
All questions
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 is included in a boiler service?
We check and clean the burner, heat exchanger and condensate trap, test the gas pressure and flow rate, run a flue gas analysis to confirm combustion is within manufacturer tolerance, check all seals and safety devices, verify the expansion vessel charge and system pressure, and check the flue and its terminal position. You get a written record of the readings, which is what your warranty provider will ask for.
Why does my boiler keep losing pressure?
Losing pressure means water is leaving the sealed system somewhere. The three usual causes are a leaking radiator valve or pipe joint, a failed expansion vessel, or a passing pressure relief valve discharging outside through the small copper pipe. Topping it up repeatedly hides the problem and introduces fresh oxygenated water, which accelerates corrosion — it is worth finding the actual cause.
Is a gas safety certificate the same as a boiler service?
No, and this catches a lot of landlords out. A CP12 is a safety check: it confirms the appliance is safe to use right now. A service is maintenance: cleaning, testing and adjusting the appliance to keep it running efficiently and to satisfy the manufacturer's warranty. Many landlords sensibly have both done in the same visit, which we can do.
Do I need to be at home for the appointment?
Someone over 18 needs to be there to let us in and to be shown the work at the end, particularly for gas work where we have to demonstrate the appliance is safe. For landlord certificates we are happy to arrange access directly with your tenants.

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Book this year's service

Forty-five minutes, £75, and your warranty stays intact. Or ring 07490 623966 and we will find you a slot.

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