When were gas water heaters first required to be FVIR …
https://www.howtolookatahouse.com/Blog/Entries/2021/1/when-were-gas-water-heaters-first-required-to-be-fvir-flammable-vapor-ignition-resistant.html
WEBMonday, January 11, 2021. All 30, 40, and 50-gallon residential gas water heaters manufactured on and after July 1, 2003, are required to have Flammable Vapor I gnition R esistant (FVIR) technology that “shall not ignite flammable vapors outside the water heater created by the spilling of… gasoline onto the floor.”.
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