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of Navigation Road, Diglis, Worcester, maker of central heating equipment
also at Clay Cross Derbyshire, oil boiler factory.
1962 Business founded - see Worcester Engineering
1987 Moved to full Stock Exchange listing from USM
1988 The core business was Worcester Heat Systems
1996 Cecil Duckworth retired
2003 Introduction of new high efficiency condensing boilers
2005 Added solar thermal water heating to the product range
2006 Introduction of ground source heat pumps
2007 Introducted Greensource air-to-water and air-to-air heat pumps