What is the Defender Safety System®/FVIR?

The Defender Safety System® is the name of Bradford White’s exclusive flammable vapor ignition resistant (FVIR) system. It is a proven feature in many of our residential gas water heaters that resists the ignition of flammable vapors outside of the water heater. The Defender System gives you the peace of mind knowing you have not only reliable performance but safer operation, too