Which HVAC Contractor Should You Choose in Cardiff?

KLM Plumbing & Heating Services provides expert domestic plumbing, heating, and gas services across Cardiff and South Glamorgan. With over 20 years' experience, we deliver guaranteed installations and maintenance work, prioritising precision and customer satisfaction. Our Gas Safe registered team offers competitive rates backed by 2 million insurance coverage.

Optimum Air Conditioning provides energy-efficient air conditioning, refrigeration, and ventilation systems across the UK. We specialise in installation, repair, and maintenance services for domestic and commercial properties, adhering to F-Gas regulations and offering a 5-year warranty. Our REFCOM-registered engineers deliver tailored climate control solutions with a focus on sustainability and cost-effectiveness.

Green Flame Plumbing and Heating delivers expert plumbing, heating, and gas services across South Wales. Specialising in boiler installations, central heating systems, and smart thermostat technology, we combine Gas Safe registered expertise with manufacturer accreditations. Our team serves residential and commercial clients in Bridgend, Cardiff, Pontyclun, Pontypridd, Porth, and surrounding areas with reliable, certified solutions.

C.S Boxall provides expert plumbing and heating solutions in South Wales, including boiler installation, central heating repairs, and emergency services. Accredited by Gas Safe and Worcester Bosch, we serve domestic and commercial clients across Cardiff, Swansea, and Newport. With 24/7 emergency support and annual maintenance plans, we ensure reliable, efficient systems tailored to client needs.