Rheem PROG40S-38-N RH62 40 Gallon Professional Classic Power Vent Gas Water Heater (644196)

Rheem Professional Classic Atmospheric 40 Gallon Natural Gas Water Heater – Short Height – Input Rate 38 Kbtu/hr

Engineered for more hot water at a low operating cost.


  • .58-.66 UEF
  • Eco-friendly burner, low NOx design – meets40 ng/J NOx requirements
  • 40 gallon capacity (29, 30, 50 gallon capacities also available)
  • FHR:  51-87 gallons
  • Recovery:  30.3 to 40.4 GPH at a 90°F rise, depending on model
  • Exclusive air/fuel shut-off device
  • Maintenance free – no filter to clean
  • Protective control system that disables the heater in the presence of flammable vapor accumulation
  • Premium grade anode rod provides long-lasting tank protection


Rheem PROG40S Use and Care Manual (PDF)
Rheem PROG40S Spec Sheet (PDF)


Tank Type Water Heaters
Rheem Manufacturing Company