Cardiff Plumbers

For genuine emergencies such as a burst pipe or a total loss of heating, we aim to reach most Cardiff addresses fast, often within the hour. Our vans are fully stocked, so we resolve most emergency call-outs on the first visit rather than coming back another day.

Yes. NJ Harkus Plumbing and Heating Ltd is fully Gas Safe registered under number 518700, which covers boilers, gas fires and gas cookers. Any gas work in your home must legally be carried out by a Gas Safe registered engineer, and you can check our registration on the Gas Safe Register at any time.

No. We provide free quotes for plumbing and heating work across Cardiff. For larger jobs like a boiler installation we'll assess the property properly and put the quote in writing, so there are no surprises on the day.

We cover the whole of Cardiff and the surrounding areas, including Penarth, Sully, Barry, Cowbridge, Pontyclun, Llantrisant and Dinas Powys. You can see the full list on our areas covered page.

Usually not, though it does need looking at. A boiler losing pressure often points to a small leak somewhere in the system or a fault with the expansion vessel. It's worth reading our guide on why boilers lose pressure, and if it keeps happening we'll diagnose the cause properly.

Once a year is the standard recommendation, and it's usually a requirement to keep your manufacturer's warranty valid. An annual boiler service also catches small faults before they become expensive breakdowns, particularly ahead of winter.

Yes, regularly. We provide landlord gas safety certificates (CP12) along with repairs and maintenance across rental properties and HMOs. We can fit the work around tenants and keep the records you need for compliance.

In most cases, yes. Water travels along pipework and often shows up a long way from the actual source, so we diagnose properly before touching anything. Most water leaks we trace and repair without lifting a single floorboard.