Heating Engineer Cardiff
Complete Central Heating Services
From new systems to heating faults, our engineers deliver dependable central heating support across Cardiff.
Book an Engineer →Your Local Plumber in Cardiff
We are Cardiff-based heating engineers experienced in installing, maintaining, and repairing complete heating systems.
Gas Safe Registered (518700)
NJ Harkus is Gas Safe registered (518700), City & Guilds qualified and CIPHE members, with full public liability insurance for all plumbing, heating and gas work.
Highly Recommended & Reviewed
Our heating engineers at NJ Harkus are trusted across Cardiff and backed by over 1,000 five-star Google reviews.
Central Heating Services in Cardiff
Specialist Heating Services, All In One Place
Our heating engineers in Cardiff provide complete central heating support, with dedicated services available for specific system requirements. Each service below is handled by experienced Gas Safe-registered engineers, allowing us to diagnose issues accurately and carry out the most appropriate work.
- Boiler installation of all types
- Boiler repairs for faults, breakdowns, and performance issues
- Boiler servicing to maintain safety, efficiency, and reliability
- LPG boiler services for off-grid properties
- Radiator installation and upgrades
- Power flushing to improve circulation and system efficiency
- Unvented hot water cylinder installation and repairs
- Central heating fault diagnosis and performance checks
- Pipework alterations and heating adjustments
- Heating system upgrades and improvements
- Commercial heating services for small business premises
By offering these services individually but as part of a complete central heating solution, we ensure work is carried out correctly and suited to the system, rather than applying unnecessary fixes.
Speak To A Cardiff Heating Engineer
Central Heating Engineers Covering Cardiff & The Surrounding Areas
Our heating engineers work across Cardiff and surrounding areas, including Penarth, Barry, Dinas Powys, Radyr, Roath, Pontcanna and Llandaff. As a local team, we understand the range of property types found across the area and tailor central heating solutions accordingly. If you are unsure whether we cover your location, please contact us, and we will be happy to confirm.
Business Hours
24 Hours, 7 Days A Week
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We Are Highly Recommended in Cardiff & The Surrounding Areas
Central Heating Systems For Homes & Businesses
Experience Across All Property Types
Our heating engineers support a wide range of central heating systems for both homes and small commercial properties. From older houses with traditional layouts to modern developments with high-efficiency systems, we adapt our approach to suit the building and its requirements.
We regularly work on gas central heating systems, upgrading older installations, improving performance, and addressing issues such as uneven heating or inefficient operation. Where improvements are required, we explain the options clearly and help you plan the most practical solution.
Whatever your heating requirements, we will always be able to help with a solution that suits your property, layout and budget.
Why Choose NJ Harkus As Your Heating Engineer
Trusted Locally For Good Reason
NJ Harkus is a family-run plumbing and heating company with over 15 years’ experience delivering central heating services across Cardiff. Our heating engineers take a careful, professional approach, focusing on safety, performance, and long-term reliability.
All central heating work is carried out by Gas Safe-registered engineers and in line with current regulations. With over 1,000 five-star Google reviews, our team is trusted by homeowners and businesses who value clear communication, reliable workmanship, and practical advice.
Whether you require a new heating system, repairs, or professional guidance, our engineers are on hand to help.
Frequently Asked Questions
Our Central Heating Service FAQs
Do we work on older heating systems?
Yes, we regularly work on older and modern heating systems.
Do we provide heating services for businesses?
Yes, we support both domestic and small commercial properties.
Are our heating engineers Gas Safe registered?
Yes, all heating work is carried out by Gas Safe registered engineers.
Do we install complete central heating systems?
Yes, we install and replace full central heating systems.
