Heatrae Ltd, maker of domestic electric water heaters, boilers, catering equipment and custom built heating products, of Norwich.
1920 company founded as Electric Fires
1936 began making water heaters; changed its name to Heatrae
1961 a satellite factory was opened in Gorleston
1961 Acquired Duncan Low Ltd, Glasgow, manufacturer of a specialised range of industrial and commercial heating equipment
1962 Acquired Electroway of Loughborough
1963 Established Heatrod Elements Ltd, of Gorleston, to make electrical elements primarily for intra-group use.
Owned by Central Mining and Investment Corporation
1970 Transferred production from the two separate factories to one new factory on an industrial site at Norwich Airport.
1972/3 Reorganisation to restore profitability
1973 Acquired Adams and Son Ltd, makers of hot cupboards, and Loughborough Ovens Ltd, makers of meat preparation ovens.
1974 Charter acquired Sadia Water Heaters
By 1982 was known as Heatrae-Sadia
Sources of Information
- Competition Commission 
- Competition Commission