Incorporating Gill Air Limited & Greenair Ventilation

Greenwood Airvac Limited specialises in a range of Air Management Louvers for the construction industry, including Air & Smoke Management that rely primarily on Natural Ventilation. The company also offer a range of solutions for Solar Shading.

Origins and History of Greenwood Airvac Limited

In 1882 Thomas Greenwood of Moss Side, Manchester, was operating as a sole agent for the Boyle System of ventilation which worked by natural convection through air inlets and ducted roof turrets.
By 1884 he had started manufacturing and offered the first ventilator product under the Greenwood name in direct competition with Robert Boyle.
In 1903 Greenwood's business had a ten page catalogue offering a range of natural ventilators, louvres and electric fans.
The business was first incorporated in 1912 as Greenwood Ventilating Company Limited and introduced a skylight ventilator. Sales were boosted by new building bye-laws requiring staircases to be ventilated.
Thomas Greenwood died in 1927 and shortly afterwards control of the business was acquired by Donal Hughes.
The business moved to Wood Green in London and then to Wembley in 1938/1939.
In March 1940 the company name was changed to Greenwood and Airvac's Ventilation Company Limited.
During the 2nd World War the company made ventilators for Corvette Destroyers and Booster Fans for Barrage Balloons.
A factory was acquired in Rustington in 1957 and in 1964 a controlling interest in the company was acquired by Keith Blackman and the company name was changed to Greenwood Airvac Ventilation Limited.
In 1968 Keith Blackman was acquired by GEC & Greenwood Airvac Ventilation Limited ran successfully as a 51% subsidiary for the following 14 years.
In 1982 the Edmondson family acquired 100% control of Greenwood Airvac Ventilation Limited , which was then incorporated as part of the Hunter International (Manufacturing) Limited.
In April 1995 the Gill Group purchased the Commercial Division of Greenwood Airvac with the established and renowned range of Louvres and Smoke Ventilation products and traded as Gill Airvac International Limited. The Housing Division of Greenwood Airvac with it's range of Grills, Diffusers, Window Vents and Extract fans remain part of Hunter International until September 1996 when it was sold to Marley Plc and currently trade as Greenwood Air Management Limited.
In May 1997 the Spire Group acquired the business of Gill Airvac International Limited which has now been renamed Gill Air Limited. Gill Air Limited continued to design and manufacture the same excellent range of Louvres & Smoke Vent Products under the brand Greenair Ventilation using the same tooling, engineers and workforce as  established by the commercial Division of Greenwood Airvac. Gill Air Limited was sold to Jim King in 2007 and the ownership was then passed to Greenwood Airvac Limited in 2009. Greenwood Airvac is pledged to continue to maintain the same exacting standards and quality of design, manufacture and product developed since 1882.  

Greenwood Airvac Louvre