How an A. O. Smith Water Heater is Made

Robert J. O’Toole Global Engineering Centre

A. O. Smith Headquarters, Ashland City, Tennessee, USA

“The most modern water heater factory in the world.”

– Life Magazine on A. O. Smith
plant in Kankakee Illinois, 1946

With 140 years of manufacturing know how, A. O. Smith’s global operations comprise of 19 plants in 6 countries.

Their plants feature the right blend of automation and experienced, well trained employees.

ao smithTANK CONSTRUCTION

A computerized arc-welding machine welds the tank together.

A technician pressurizes the tank with air and using water and checks for leaks.

ao smith. BLUE DIAMOND ANTI-CORROSION COAT PATENT US6303183

Blue diamond glass liquid is pumped into the tank.

This coating protects the interior of the tank against corrosion.

It takes about 50 min in the furnace for the coating to cure and become rock hard.

End product: Blue Diamond coating.

ao smith. FITTING

Anode rods inserted to protect tank against corrosive elements.

The tank jacket is put in place.

ao smith. HIGH DENSITY INSULATION

The cavity between the tank and shell is filled with high density expanding foam.

This foam goes all round the circumference of the tank to prevent heat loss.

ao smith. FINISHING TOUCHES

Each unit is hooked up and tested.

Only after all strict standards are met is the unit ready for shipping.