Modernisation is made fast and simple with the latest-generation Vitocal 150-A and Vitocal 151-A domestic air source heat pumps Telford, UK – Viessmann has launched two new-generation monobloc air source heat pumps, the Vitocal 150-A and Vitocal 151-A, which are ideal for replacing boilers in the UK’s existing housing stock and are exceptionally easy to […]