The Rheem Performance Platinum 40 Gal. Tall 12-Year 38,000 BTU ULN Natural Gas Water Heater is an efficient Ultra-Low NOx water heater provides more hot water for added convenience. Features like push button, match-free ignition that make it great for replacement for your current tank water heater. Provides ample amount of hot water for households with 2 to 4 people. It also includes a self-cleaning feature for added peace-of-mind. Plus, it's a great value with a warranty that is six years longer than standard models.