Find 5 HVAC Contractors You Can Count On in Cardiff

KLM Plumbing & Heating Services is a Cardiff-based Gas Safe registered company providing domestic plumbing, heating, and gas services throughout Cardiff and South Glamorgan. With over 20 years of experience, we deliver guaranteed workmanship for bathroom installations, boiler replacements, heating systems, and emergency repairs. Our family-run business combines technical expertise with meticulous attention to detail, serving a loyal customer base through recommendations.

Green Flame Plumbing and Heating provides expert plumbing, heating, and gas services across South Wales. Covering Bridgend, Cardiff, and surrounding areas, we specialize in boiler installations, servicing, and repairs, alongside central heating systems and smart thermostat solutions. Our Gas Safe Registered team ensures safety, efficiency, and compliance with industry standards.

Optimum Air Conditioning provides specialist installation and maintenance of energy-efficient HVAC systems across the UK. We offer tailored solutions for residential and commercial properties, including air conditioning, heat pumps, refrigeration, and ventilation systems. Our F-Gas-certified engineers ensure compliance with environmental regulations while delivering 5-year equipment warranties.

C.S Boxall provides professional heating, plumbing, and boiler services for residential and commercial properties across South Wales. Specialising in installations, repairs, and maintenance, we combine technical expertise with 24/7 emergency support to ensure reliable solutions. Our Gas Safe registered team delivers cost-effective, accredited services to maintain system efficiency and safety.

At HeatGlow Heating & Plumbing, we pride ourselves on delivering top-notch heating and plumbing services, ensuring your home stays warm and safe all year round. Our expert team specialises in boiler installation, offering energy-efficient solutions tailored to your needs. We also offer a range of other services, including boiler repair and maintenance, to ensure your home is always comfortable and secure.