This Richmond Essential 40-Gallon Natural Gas Tank Water Heater is a great option when replacing your existing unit or building new. Equipped with side water connections, it works well for tight space requirements or when using space heating applications. It's an exceptional value for its peace of mind, lifespan, and performance. This model provides peace of mind with the exclusive FVIR System air/fuel shut-off device for double protection, with a sensor built-in to disable the heater in the presence of flammable vapor accumulation. It?s also maintenance free, designed with no filter to clean. Enjoy a low-cost solution for ample hot water for 2-3 people. This 40,000 BTU burner and 40 gallon tank have a 12-Year limited warranty on tank and parts, plus a 2-Year In-Home Labor Warranty. Eco-Friendly burner, low NOx design. The premium grade anode rod helps protect against tank corrosion and maintenance is easy with standard replacement parts. The EverKleen patented system also fights sediment build-up, prolonging efficiency, and tank life. The tall profile allows this heater to fit into a smaller footprint and allows for easy installation when tank diameter is a factor, featuring side water connections for tight space requirements or space heating applications. It's also easy to light, no matches required.