Boiler Service
We provide expert boiler servicing, repairs, and installations, carried out by our Gas Safe registered engineers. Our team works with all major boiler brands, including combi, system, and LPG units, ensuring complete coverage for your heating needs. A complimentary quote is available for all installations, with efficiency and reliability being our top priority. Emergency services are also available 24/7 for urgent boiler issues.
Heating Services
N.J Harkus Plumbing and Heating Ltd are fully Gas Safe Registered plumbers in Cardiff and are available 24 hours a day to work on any central heating systems throughout South Wales. For any repair or maintenance work that you require to your central heating, please don't hesitate and call us on 07859 896019 or email us using the form. We can also provide you with a FREE quotation on any complete installations. Experiencing costly heating bills? It is estimated that on average, a boiler can be as low as 60% efficient, which means only 60 pence of every pound spent on heating is being put to good use.
Bathroom Fitting
Our team of professional plumbers are able to fully install your new bathroom as well as carry out all plumbing. Across Cardiff, we have fitted a range of bathrooms, wet rooms and showers with a whole range of accessories added. We are a trusted company and have years of experience in both domestic and commercial bathroom fitting. From start to finish, we take care of all aspects of the bathroom fitting from tiling to the toilet installation. NJ Harkus and the team in Cardiff know that the variety of bathrooms that can be installed can differ massively.
Emergency Plumber
N.J Harkus Plumbing and Heating Ltd are a qualified team of plumbers in Cardiff and the surrounding areas. Our heating engineers are able to respond to any emergencies such as a burst pipes, leaking taps, broken toilets and more. Common plumbing services in Cardiff include leaks and burst pipes, leaking cisterns, toilet repairs, shower repairs, sink repairs, bath repairs, hot water issues, central heating problems and many more. There is no job that our team will turn down, call 07859 896019 to discuss any work that you may require.
Underfloor Heating
Investing into underfloor heating is a great method of heating a room without radiators or taking the coldness from a bathroom floor. They are a modern and high-spec feature that can be installed in pretty much every home. The most common areas to install underfloor heating is the bathroom, kitchen, living room and the hallway. Installing it in every room may be a great option but it can be very expensive and messy. Although you can install it yourself, a heating engineer would be the best option.
Jun 14, 2025
Had a great experience with this plumbing team. They installed a new toilet quickly and to a high standard. They were also genuinely lovely and politetook their shoes off at the door without being asked, which I really appreciated. Would definitely use them again!
May 21, 2025
Had a new combi boiler fitted in the garage at my home by Nathan and he's team a year ago - it has worked perfectly ever since. Today was its first annual service. Everything was still working perfectly and it passed all inspections and tests with flying colours. Again, first class service by Nathan and his team at a very competitive price.
Was recommended by my neighbour who was highly impressed by the service. I called them several times to fix my old boiler and then to fit a new one. I.
Awesome service today. We were really desperate for someone to come out to save our boiler that decided to stop working on the coldest day ever.
Nathan and his team have supplied and fitted multiple Combi Boilers for some of our rented Cardiff properties. By far the best plumber in Cardiff