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Gas Safe engineer diagnosing a boiler fault

Boiler repair and breakdown in Mansfield & Nottinghamshire

Fast diagnosis, a fixed price before we start, and a straight answer on whether the repair is worth doing.

When your boiler stops, the two things you need are someone who can get to you and someone who will tell you the truth about what it needs. Our Gas Safe engineers diagnose the fault, give you a fixed price before any work begins, and — if the appliance is genuinely beyond economic repair — say so rather than selling you a fix that buys three months.

  • Fixed price agreed before any work starts
  • All major makes — Worcester Bosch, Baxi, Vaillant, Ideal, Glow-worm, Navien
  • Diagnostic fee deducted if you go on to replace with us
  • Gas Safe registered and fully insured

Get a free quote

Fill this in and we will call you back — usually within the hour.

No obligation · No call-out fee · Never shared

Prefer to talk?01623 354773

Accredited & approved

Checkatrade approved memberGas Safe RegisterWorcester Bosch accredited installerBaxi approved installer

Customer reviews

Checkatrade approved member
  • Customer rating 10/10

    RPH Home Services did a great job. I can’t fault Dean and his team. We had a new boiler fitted. Highly recommended. Fitted the boiler on a Saturday as they were busy the following week.
    Boiler installation
  • Customer rating 10/10

    If you are looking for anybody to carry out boiler installation, servicing or central heating work then look no further. RPH were competitive, punctual, professional, clean and tidy. Nothing was rushed and they went to great effort to not only complete our swap from a traditional to a combi boiler, but to do it in a way that made the swap look as good as possible too. Although we got several quotes, they left us feeling confident we made the right decision.
    Combi conversion
  • Customer rating 10/10

    I was very impressed with David from the day he came to give me a quote. He checked the location of gas pipes to ascertain the complexity of the job — two previous companies had not even mentioned this. On fitting day David and two colleagues arrived at the time advised. They kept me informed of each task and left my property clean and tidy.
    Boiler installation
  • Customer rating 10/10

    Needed my old boiler and F&E system replacing. David visited and we agreed a new location for the boiler and an extra radiator. On the day of installation David, Dean and crew were very professional, ensuring all carpets and flooring were protected. Very pleased with the work undertaken.
    System replacement

Our work

Work we have completed

Our own photographs from recent jobs across Nottinghamshire.

  • Worcester Bosch combi boiler installed in a fitted kitchen

    Worcester combi, kitchen install

  • Newly commissioned Worcester Bosch combi boiler with its documentation attached

    Commissioned and documented

  • Worcester Bosch boiler with neatly run copper pipework below

    Copper pipework, first fix

How we approach a breakdown

  • Diagnose before quoting

    We find the actual fault before pricing anything. A guessed part fitted on spec is how people end up paying twice.

  • Fixed price, agreed upfront

    You get the cost of the repair before we start. No hourly creep and no parts markup revealed at the end.

  • Honest repair-or-replace advice

    If the economics say replace, we show you why. If the boiler has years left, we fix it — even though a replacement would be worth far more to us.

  • Diagnostic fee comes off a replacement

    If the outcome is a new boiler and you have it fitted by us, the cost of the diagnostic visit comes off the installation price.

The faults we see most

Most breakdowns fall into a short list, and most of them are economic to repair. Knowing which one you have tells you a lot about the likely cost before an engineer is even on site.

  • Heating works but no hot water — usually a diverter valve
  • Pressure keeps dropping — a failed expansion vessel, a leaking PRV, or a genuine leak
  • Banging or kettling on start-up — limescale or magnetite in the heat exchanger
  • Locks out in cold weather — a frozen condensate pipe, which costs nothing to fix
  • No ignition — commonly the fan, the gas valve, or the ignition electrode
Gas Safe engineer diagnosing a boiler fault

When a repair stops being worth it

Our rule of thumb is the one-third test. If the repair costs more than a third of a replacement, and the appliance is past about ten years old, you are spending a meaningful share of a new boiler's price on a machine near the end of its life. We will always give you both numbers so the decision is yours rather than ours.

  • Primary heat exchanger failure on an out-of-warranty appliance
  • Repeated faults on the same boiler inside twelve months
  • Parts no longer supplied by the manufacturer
  • Leaks from the main body rather than a joint or valve
Boiler control panel being checked during a repair visit

What you can check before calling

Some of what we get called out to costs nothing to fix, and we would rather tell you that than charge you to press a button. Worth two minutes before you phone anyone.

  • Pressure gauge below 1 bar — the system needs topping up via the filling loop
  • Outside temperature below freezing and the boiler locked out — likely a frozen condensate pipe, thawed with warm water
  • Thermostat batteries flat, or the programmer reset by a power cut
  • Other gas appliances also dead — check the meter rather than the boiler
Isolation valves and system filter on a serviced boiler

Boiler down? Call us now

Tell us the make and the fault code and we will give you a realistic idea of the cost before we come out. We prioritise no-heat situations and vulnerable customers.

Frequently asked questions

How much does a boiler repair cost?

Diagnostics start at £89, and that covers finding the fault and giving you a fixed price for the fix. Most common repairs — diverter valve, expansion vessel, fan, PRV — land between £150 and £400 including parts and labour. You approve the price before we do the work, and if you go on to replace the boiler with us the diagnostic fee comes off.

Do you repair all boiler brands?

We work on all major domestic makes including Worcester Bosch, Baxi, Vaillant, Ideal, Glow-worm, Navien, Potterton and Alpha. On very old or discontinued appliances the limiting factor is parts availability rather than the work, and we will tell you upfront if a part is no longer supplied.

How quickly can you come out?

We prioritise no-heat and no-hot-water situations, and we aim for same-day attendance where engineer availability allows. In winter that is not always possible, so we will give you a realistic time when you call rather than an optimistic one.

Will you try to sell me a new boiler?

No. If the repair makes economic sense we will quote for the repair, and we do that routinely on appliances that are five to ten years old. We only recommend replacement when the numbers genuinely favour it, and we show you the numbers.

Is my boiler still under warranty?

Worth checking before you pay for anything. Most manufacturer warranties run five to ten years and require a documented annual service to stay valid. If yours is in warranty we will tell you and point you at the manufacturer rather than charging you for a repair they should cover.

Other services we offer

  • Boiler Installations

    Energy-efficient boiler upgrades installed by Gas Safe engineers — complete with up to 10-year warranties.

    Learn more
  • Boiler Maintenance

    Annual servicing to keep your boiler safe, efficient, and running smoothly all year round.

    Learn more
  • Central Heating

    New heating systems, radiator installation and replacement, system conversions and smart heating controls.

    Learn more
  • Power Flushing

    Magnacleanse and chemical flushing to clear magnetite sludge, restore circulation and protect a new boiler's warranty.

    Learn more
  • Leak Detection

    Non-invasive tracing of hidden water leaks, plus repair and replacement of leaking supply pipes and mains.

    Learn more
  • Landlord Boiler Services

    Boiler servicing, CP12 certificates and plumbing cover for landlords, letting agents and property managers.

    Learn more
  • Commercial Plumbing Services

    Professional plumbing and heating for offices, retail, and commercial properties.

    Learn more
  • Emergency Callout

    Same-day response for no heat, no hot water and active leaks, with vulnerable customers prioritised.

    Learn more

Get a free quote

Takes 30 seconds. No obligation. We call you back personally — usually within the hour.

No obligation · No call-out fee · Never shared

Prefer to talk?01623 354773

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