This recall involves Water Heating Technologies “American Standard” gas water heaters. The model numbers included in the recall begin with GN and GSN. The water heaters are white with an “American Standard” logo printed on the front.

The water heaters have a space between the burner flange and the combustion chamber that allows flammable liquids or gases to contact burning flammable vapors inside the combustion chamber, posing a risk of fire or explosion.

Consumers should immediately stop using the gas water heaters and call Water Heating Technologies to arrange for a service technician to inspect, repair or replace the water heater free of charge.