Household energy-efficient gas water heater Vertical Product Features energy efficient water heater tank insulation wrapped around the insulation layer 1-3 inches thick and efficient CFC-free foam insulation, thermal insulation effect is particularly evident. (MI-75 model thickness of 1.25 inches, MI-100T model thickness of 2 inches) flue baffles maximize heat absorption lower part of the water heater, reducing air flow water heaters standby, reduce exhaust gas heat loss. Jet injection system reduces water sedimentation device. Improve the yield of hot water; and to prevent sedimentation of suspended solids in water scaling, automatic cleaning water heater tank. Magnesium anode rod anti-galvanic corrosion protection devices. Provide anodic protection against corrosion and scaling. Ensure durable tank, greatly extend the life of water heaters. Fully automated control, automatic temperature controller mounted on a water heater reaction sensitive, can go9u automatically adjust water temperature control. Built-energy cut-off switch to prevent abnormal temperature rise, increased safety performance built-in gas pressure regulator, water heaters rapid warming. Overheat / overpressure valve in this paragraph are all types of water heaters equipped with special side or top of the temperature and pressure relief valve, making it safer and more reliable operation. Quality and safety drain valve in this paragraph are all types of water heaters made of high quality safety drain valve, which uses "no handle" designed to prevent children or others inadvertently open, use more secure. Insulation comes with a threaded pipe joints of all of the models of water heaters are installed at the factory to take over pieces of insulation threaded sleeve. Help extend the life of the water heater, installation easier. Unique "snap-lock" flow splitter unique "sliding" chamber door (except models 284 and 379 liters) side pipe fittings convenient for building heating systems, only applies to 284 liters and 379 liters. Manual cleaning holes can be used to check the interior, and clean up the impact of the life of the water heater main hazards - lime and sediment. 6 year limited warranty liner liner by thick steel plate rolling through automation and control equipment, forming, welding, ensure that there is no gap in the US special interior coating process. Accessories 2-year limited warranty. This paragraph water heater meets or the US Refrigeration Heating and Air Conditioning Engineers (ASHRAE) Standard 90.1b 1992 certified water heaters in this paragraph of this subsection heaters American Gas Association meet US energy-saving products Act (NAECA) requirements, so the California South Coast natural gas water heater Special Air Quality Management (SCAQMD) requirements.