a.o. Smith Signature 100 40-Gallon Short 6-Year Limited 40000-BTU Natural GAS Water Heater | G6-S4040NVR

Environmentally friendly 40 000 BTU Low NOx gas burner delivers 67 gallons in the first hour. Self-diagnostic electronic gas control incorporates an LED status indicator that monitors and reports on system operational status. Built-in safety system reduces the risk of accidental flammable vapor ignitions. Short 51.5-in H x 22-in diameter design is ideal for condensed spaces like under staircases and closet installations. Protective anode rod and fused ceramic tank shield provide superior tank protection and extend water heater life.