London Metal was established in 1933. Three generations of the Barnett family beginning with Alf Barnett, have guided London Metal through it's evolution of expanding products and services for the HVAC Contractor.

1930s * Supplied standard Galvanized, hot and cold rolled sheet metal. * Supplied blued and oiled steel for stovepipe and Decorative steel ceiling products. * Galvanized metal supplied for Water towers and combustion pipe venting of wood fired tobacco kilns. 1940s * Supplied full line of Honeywell residential and commercial heating control. * Milwaukee Gas Specialty Controls. Fans and controls to convert gravity furnaces to forced air. * Hart & Cooley commercial and residential registers and grills * Metal supplied for water towers and the combustion venting of tobacco kilns. * Galvanized Metal eavestroughing, galvanized and aluminum ribbed roofing & accessories. * Expanded metal, plaster lath and accessories. * Began selling automated lockforming equipment and shop layout consulting. * Steel rationing through World War 2 and Korean conflict. 1950s * Supplied gas and oil furnaces and accessories. * Supplied perimeter heating products and accessories. * Expanded controls specialty - General, Baso, ITT, White Rodgers and Robertshaw. * Duro Dyne Duct hardware, sealer, adhesives and accessories. * Commercial and residential Duct Insulation. 1960s * Began Delivery service with own truck and driver covering 8 counties. * Building expansion for drive intruck bay with overhead crane. * Honeywell and Fireye flame safeguard, drier and boiler controls. * Began service of commercial register and grill take offs. * Expanded sales territory with two dedicated outside salesmen. * Controls Company of America repair depot for oil spaceheater carburaters. 1970s * Added cranes and cut to length, slit shear line to process metal sheets * Supplied Central Air Conditioning systems. * Began own production of perimeter pipe 5' and 10' lengths, 4" up to 8" diameter. * Supplied the Honeywell whole house electronic air cleaner. * Supplied High Efficiency gas furnaces. 1980s * VanEE ventilation and Indoor Air Quality Products. * Began own production of standard residential duct sizes. * Supplied automated plasma cutting systems and software * Computerized pricing, costing , statements and inventory. * Supplied Commercial Energy Management Building Controls. 1990s * Began selling the RUUD equipment line through exclusive dealers in Ontario. * Began selling Gas Fireplaces. * Expanded Deliver service to twice weekly throughout Southwestern Ontario.