Boiler repair

Boiler repairs, with the fault found before parts are fitted

Cold radiators, no hot water or a code flashing on the display? Ring us, talk it through, and we'll come out to pin down exactly what has gone wrong before anything gets replaced.

What a boiler repair visit involves

A repair visit is about tracking down the cause, not just quietening the symptom. A boiler can stop for many reasons: a failed sensor, a frozen or blocked condensate pipe, a seized pump, low system pressure or a problem in the controls rather than the boiler itself. Swapping components on a hunch wastes your money, so we test and trace first and then put right the part that has actually failed.

Breakdowns make up a large share of our work, which means we come across the same faults on lots of different makes and know where to start looking. That experience is what lets us get to the answer without a pile of unnecessary parts on the invoice.

When to call us

Get in touch if any of the following sounds familiar. If the pressure gauge keeps creeping down, our boiler pressure problems guide covers the usual causes, and the boiler not working guide has a wider checklist. Where the boiler seems fine but the house stays cold, try central heating not working.

  • The boiler has locked out and pressing reset doesn't hold for long.
  • An error code or warning light is showing on the display.
  • There's no heating, even though the timer and thermostat are calling for it.
  • The heating works but there's no hot water, or the other way round.
  • System pressure drops and needs topping up again and again.
  • Water is dripping from the boiler, a radiator, a valve or the cylinder.

What to do first, and what we can check by phone

Before ringing, make sure the boiler has power, the fuel supply is on and the programmer hasn't simply been knocked off. Write down any code shown on the display along with the make and model. Please don't take the casing off: work inside a boiler should only be done by a qualified engineer.

When a boiler has gone into lockout, a short conversation is often enough for us to narrow down the likely cause before we set off. That means we turn up with a clearer idea of what's needed and you spend less time waiting for a second trip.

How a repair visit runs

  • Diagnosis: we test the boiler and controls to find what has really failed.
  • Explanation: you get a plain-English account of the problem, without jargon.
  • Price: we tell you the cost of putting it right before any repair work starts.
  • Repair: once you're happy, we carry out the work, very often during that same visit.
  • Test: we run the heating and hot water and check everything is working before we leave.

Repair or replace?

Our starting point is always to fix what you already have. If your boiler can be repaired economically we will not try to talk you into a new one. Where an older boiler keeps failing, or the repair would cost more than the boiler is worth, we'll explain why a replacement may serve you better over time and leave the decision to you. Our boiler installation page shows how we approach a new boiler, and the boiler repair cost guide explains what tends to affect the price of a fix.

Gas, LPG and oil boilers

Our Gas Safe registered engineers repair gas boilers, and LPG and oil boilers are covered by qualified engineers too, so homes off the mains network aren't left out. Once a boiler is running again, a yearly boiler service is the best way to catch the next problem early.

When we're available

We're contactable Monday to Sunday, 8am to 8pm, including weekends. For urgent jobs in and around Harpenden we aim to attend the same day where our schedule allows, and we're straight with you about timings. If water is pouring from a burst pipe rather than the boiler, head to our emergency plumber page.

Areas we cover

From our Harpenden base we repair boilers in Harpenden, Batford, Kimpton, Redbourn, St Albans, Sandridge, Markyate and Flamstead, plus the surrounding parts of Hertfordshire and the Bedfordshire border. See every location on our areas we cover page.

Why us

Why call us when your boiler fails

Cause first, parts second

Testing comes before fitting anything, so you only pay for components that solve the problem.

No jargon

You'll understand what broke and why, explained the way you'd explain it to a friend.

Cost known in advance

We agree the figure with you before we pick up a spanner.

Fix over replace

If mending your existing boiler is the economical option, that's what we recommend.

Registered and recognised

Gas Safe registered engineers and a Which? Trusted Trader.

Nearby and family-run

An independent local firm in Harpenden that depends on word of mouth.

Frequently asked questions

My boiler has stopped working. What should I do first?
Check it has power, the fuel supply is on and the timer hasn't been switched off, then note any code on the display. Leave the casing alone and give us a ring with the make, model and code.
How quickly can you get to me?
We're contactable Monday to Sunday, 8am to 8pm, including weekends. For urgent jobs in and around Harpenden we aim to attend the same day where our schedule allows, and we're straight with you about timings.
Will I know the cost before you start?
Yes. Once we've found the fault we tell you what the repair will cost, and nothing goes ahead until you've agreed.
Can you usually fix it on the first visit?
Many central heating faults are sorted on the same visit. Talking the lockout through on the phone beforehand helps us arrive better prepared.
When is it better to replace the boiler than repair it?
When an older boiler keeps breaking down, or a single repair would cost more than it is worth. We'll give you an honest view and never push a new boiler when yours can be fixed economically.
Do you repair LPG and oil boilers as well as gas?
Yes. Gas boilers are handled by our Gas Safe registered engineers, and LPG and oil boilers by qualified engineers.

Need a plumber or heating engineer in Harpenden?

Call us monday–sunday, 8am – 8pm for honest advice and a free quote on boilers, heating, bathrooms and everyday plumbing.