You can rely on the new Guardian Water Heaters from Rheem.
Air Shut-Off System
A Unique Rheem Feature, should a spill incident occur, the Guardian System shuts off the gas supply and the air supply preventing a sustained vapor burn in the combustion chamber. This one-of-a-kind, air-and-fuel shut-off device provides extra reliability and
ultimate protection.
Flame Arrestor Plate
A specially-designed flame arrestor prevents ignition of vapors outside the combustion chamber.
Maintenance-Free!
The Guardian System design is self-cleaning and has no filter to service, replace or clean - ever!
Manual Electronic Ignition
No more getting down on your knees to check and re-light a blown out pilot flame. Just press the handy pilot ignition button on the front of the unit and it's done.
* Available in a multitude of tank sizes, capacities and fuel choices. (natural gas, propane & electric)