This short natural gas water heater comes with a two-year in home labor warranty and provides ample hot water for households with 3-4 people. Its short profile allows this water heater to fit into spaces a taller model won't while increasing ease of installation. The heater features a powered damper that closes when the unit is not in operation to reduce stand-by heat loss and increase efficiency. The heater also features an FVIR System, an exclusive air/fuel shutoff device that prevents ignition of flammable vapors should they be detected outside the unit. The air intake is designed to be completely maintenance free with no filters to clean or replace. This unit meets the requirements to qualify for ENERGY STAR® and meets or exceeds NAECA and ASHRAE requirements.