Our R290 air source heat pumps are some of the most advanced and efficient on the market, using eco-friendly R290 refrigerant. Even our market-leading Ecocent unit now uses R290 refrigerant and mechanical parts that ensure maximum efficiency. Our R290 unit range is one of the first to receive Keymark Certification and MCS product Accreditation – a natural mark of quality and the dedication of our team to the delivery of superior products designed specifically for the UK climate, market and existing system infrastructure that needs updating.