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Your Trusted HVAC Partner in Cardiff
Optimum Air Conditioning, a family-owned business based in South Wales, has built a reputation for excellence in HVAC and refrigeration systems. With over two decades of combined experience, our F-Gas certified engineers deliver tailored solutions across air conditioning, heat pumps, refrigeration, and ventilation. As accredited installers for Mitsubishi Electric and Daikin, we offer a comprehensive 5-year warranty on equipment, ensuring long-term reliability. Our engineers are industry-trained to the latest standards, providing nationwide service to commercial and domestic clients.From design and installation to maintenance and emergency repairs, we combine technical expertise with a commitment to customer satisfaction. Operating across the UK, we have worked on projects ranging from server rooms to large-scale commercial buildings, always prioritising energy efficiency and compliance with environmental regulations. Our REFCOM registration and public liability insurance further demonstrate our commitment to quality and safety.
Services
Air Conditioning
Heat Pumps
Refrigeration
Electrical Installations
Ventilation
Highlights and features
- We are accredited installers for Mitsubishi Electric and Daikin
- 5-year warranty on equipment
- F-Gas certified engineers
- Nationwide service coverage
- 24/7 emergency support
Associations and certifications
- REFCOM
- NICEIC
Services
Air Conditioning
We design and install energy-efficient air conditioning systems tailored to domestic and commercial needs. Our Mitsubishi Electric and Daikin systems reduce energy bills while maintaining comfort. All installations meet strict F-Gas regulations and come with a 5-year warranty, ensuring reliable performance across residential, industrial, and healthcare environments.
Heat Pumps
Our air source heat pumps provide low-carbon heating solutions for homes and businesses. Utilising proven technology, these systems generate 3-4 times more renewable heat than electricity consumed, significantly lowering running costs compared to traditional boilers. Suitable for off-grid properties, our installations comply with environmental standards and offer long-term energy savings.
Refrigeration
We supply and install refrigeration systems for food storage, medical facilities, and industrial applications. Our modular walk-in cold rooms offer cost-effective solutions with energy-efficient condensing units positioned outside. Servicing includes emergency repairs using over 100 spare parts carried in our vans, ensuring rapid resolution for 90% of breakdowns during the first visit.
Electrical Installations
Our NICEIC-registered electricians handle installations from small domestic projects to large commercial developments. We ensure full compliance with regulations and offer air curtain solutions that improve energy efficiency in retail spaces. Our team maintains high standards in design, installation, and commissioning, supporting HVAC system integration.
Ventilation
We install mechanical ventilation with heat recovery (MVHR) systems to enhance indoor air quality while reducing energy costs. Our solutions address condensation and mould issues in homes and meet Part F Building Regulations for commercial properties. Heat recovery units can save up to 30% on heating and cooling loads, maintaining comfortable environments with minimal temperature fluctuations.
Questions
Do you offer warranties on installations?
Yes, we provide a 5-year warranty on Mitsubishi Electric and Daikin equipment, covering parts and labour for added peace of mind.
Are your engineers qualified?
Our engineers are F-Gas certified and NICEIC-registered, ensuring compliance with all legal requirements for refrigerant gas work.
Can you service older systems?
Yes, we repair and maintain all makes and models of HVAC equipment, including replacement of outdated systems with energy-efficient alternatives.
Do you provide emergency support?
Our 24/7 breakdown service operates across South Wales and surrounding areas, with rapid response times to minimise business disruption.
Can air conditioning units be painted to match interiors?
Yes, we offer spray painting services using specialist acrylic paint for cassettes and grills to match corporate branding or interior decor.
Is financing available for installations?
We offer Mitsubishi Electric's Finance Solution, allowing payment over 1-5 years with competitive rates for qualifying customers.
