The ProLine® Ultra-Low NOx Direct Vent residential gas water heaters offer horizontal or vertical venting options in an FVIR solution to reduce the risk of accidental fires involving flammable vapors.
Featuring a 40-gallon (nominal) tank and a 36,000 BTU gas burner, the GDNL-40L-100 Direct Vent Ultra-Low NOx delivers a first hour rating of 72 gallons and a recovery rate of 39 gallons per hour. With an 0.59 Uniform Energy Factor, this water heater is not ENERGY STAR® qualified. It carries a 6-year limited tank warranty, and meets Ultra-Low NOx emission requirements.