Rheem PROG40-36NRH62DV is a 40-gallon natural gas residential water heater in the Professional Classic Plus series, rated at 36,000 BTU input and configured for direct-vent installations. It features an adjustable coaxial vent that swivels 360 degrees for outside-air combustion, piezo ignition (no electrical power required), low-NOx burner, and a uniform energy factor of 0.59. First hour rating is 64 gallons with a recovery of about 36 GPH.
40 gallon tank; 36,000 BTU input; direct vent with adjustable coaxial vent (360°) using outside air for combustion
Uniform Energy Factor 0.59; first hour rating 64 gallons; recovery approximately 36 gallons per hour at 90°F
Top water connections, side temperature & pressure relief valve included, 1/2 in gas connection, 3/4 in water connections; product weight 155 lb
Product Highlights
40-gallon direct-vent natural gas tank; 36,000 BTU input; adjustable coaxial vent; 64-gallon first hour rating