Flammable vapor ignition resistant gas water heaters will be in the marketplace soon.
By Kelly Faloon
This summer marks the beginning of a new standard--and a new design--for gas water heaters. ANSI Z21.10.1-2001, which covers all gas-fired residential water heaters of 75,000 Btus or less manufactured in the United States, requires that the design of such water heaters "shall not ignite flammable vapors outside the water heater created by the spilling of...gasoline onto the floor."