New Zealand Frost Fans has been providing innovative frost protection solutions to growers around the world, with its range of FrostBoss™ fans. From its base in Hastings, New Zealand the business specialises in frost fan design and manufacture, as well as the subsequent field placements, installation and servicing. New Zealand Frost Fans has a significant research and development programme focused on improving the efficiency and reliability of frost fans. The result of this research has been the development of the FrostBoss™ C49 frost fan incorporating the proprietary FrostBoss™ clutch, controller and C49 composite blades. The FrostBoss™ C49 was developed with help from former Team New Zealand aerodynamics research engineer, Richard Karn, to optimize noise reduction by using a greater blade working area and slower rotational speed than a 2-blade fan. In addition, the much higher blade passage frequency of the 4-blade fan means the noise signature no longer has a low frequency beating sound, similar to an Iroquois helicopter. Along with the FrostBoss™ C59 (5-blade machine), the FrostBoss™ C49 is the quietest machine on the market and is the best-selling machine in New Zealand and Australia. A growing market for fan upgrades now exists as new technology is adapted for the population of ageing fans, especially in New Zealand and Australia. The efficiency and productivity of such fans can be significantly improved by the retrofitting of composite blades, centrifugal clutches and gearboxes, particularly when coupled with automated controllers. Web based monitoring of frost fans is also becoming more popular among large and small growers alike, and the FrostBoss™ controller has been designed with this in mind. Marketed through its own companies in New Zealand and Australia, FrostBoss™ fans are also installed in Canada, Italy, France, Turkey and Chile through local Distributors. We welcome enquiries from interested growers throughout the world.