Browse the Top 5 HVAC Contractors Serving Cardiff

Cosywarm Heating & Plumbing provides comprehensive plumbing, heating, and electrical services across Cardiff and South Wales. With over 30 years of industry experience, we specialise in boiler installations, bathroom and kitchen renovations, and emergency repairs. Our Gas Safe Register Approved engineers deliver reliable solutions for domestic and commercial clients, supported by accreditations from Which? and Worcester Bosch, ensuring quality workmanship and customer satisfaction.

C.S Boxall provides expert plumbing and heating services in South Wales, including boiler installation, central heating repairs, and emergency callouts. Specialising in domestic and commercial solutions, we are Gas Safe and OFTEC accredited with a focus on reliability and efficiency. Our engineers serve Cardiff, Swansea, Newport, and surrounding areas, offering competitive pricing and annual maintenance plans.

Optimum Air Conditioning delivers energy-efficient climate control solutions across the UK. We specialise in air conditioning, heat pumps, refrigeration, and ventilation systems, offering end-to-end services from design to maintenance. Our F-Gas-certified engineers ensure compliance with the latest environmental standards.

Green Flame Plumbing and Heating provides expert plumbing, heating, and gas services across South Wales. Specializing in boiler installations, central heating systems, and smart thermostat technology, we serve residential clients in Bridgend, Cardiff, Pontyclun, Pontypridd, Porth, and surrounding areas. Our Gas Safe Registered engineers deliver reliable, code-compliant solutions with a focus on energy efficiency and customer satisfaction.

KLM Plumbing & Heating Services is a family-run Gas Safe registered business providing comprehensive domestic plumbing, heating, and gas services across Cardiff and South Glamorgan. With over 20 years of hands-on experience, we specialise in bathroom installations, boiler services, and central heating systems while maintaining a strong reputation for reliability and competitive pricing. Our work comes with a full guarantee and 2 million insurance coverage.