Constant Air Systems Limited (CAS) incorporated in February 1965 as a Heating, Ventilation and Air Conditioning Contractor. Constant Air Systems have successfully carried out contracts in the commercial and retail sectors as well as in the motor industry, pharmaceutical industry, printing, shipbuilding, warehouse distribution, aircraft hangar etc. In more recent years we have expanded in to the field of acoustics with the formation of Emtec Products Limited who specialise in acoustic silencers and louvers.
