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Rheem 622101 - PRO+G40-36U RH68 Professional Classic Plus Ultra Low NOx Water Heater, Natural Gas 36,000 BTU, 40 Gallon, Tall

Item: PRO+G4036U-622101
MFR: 622101
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Professional Classic Plus™ Ultra Low NOx Powered Damper gas water heaters are SCAQMD Rule compliant and meet 10 ng/J NOx emissions.

  • .68 EF
  • Energy Star® rated
  • FHR: 93 gallons for 50-gallon model and 71 gallons for 40-gallon
  • Recovery rate is 36.4 gallons at a 90 degree rise for both models
Self-Diagnostic System:
  • Electronic gas control for improved monitoring and service
Low Emissions:
  • Ultra low NOx 36,000 Btu/h burner
  • Meets 10 ng/J NOx requirements
  • SCAQMD Rule 1121 compliant
  • 24 VAC flue damper,110 VAC outlet required
  • Includes 19-foot cord, 3-prong plug
  • Standard Cat. I, double-wall, B-vent, 3" (4" adaptor included)
Guardian System™ and Sensor:
  • Exclusive air/fuel shut-off device
  • Maintenance free - no filter to clean
  • Disables the heater in the presence of flammable vapor accumulation
Longer Life:
  • Rheem exclusive R-Tech (resistored) anode rod provides long-lasting tank protection
High Altitude Compliant:
  • Certified to 10,200 ft. above sea level
  • Dual certified for both potable water and space heating
  • Enhanced flow brass drain valve
  • Temperature and pressure relief valve included
  • Low lead compliant
  • EverKleen™ patented system fights sediment build-up
  • Standard replacement parts
  • 8-Year limited tank and parts warranty*
  • With ProtectionPlus™ the 8-year limited tank warranty becomes 12-year


NameRheem 622101 - PRO+G40-36U RH68 Professional Classic Plus Ultra Low NOx Water Heater, Natural Gas 36,000 BTU, 40 Gallon, Tall
Gemaire Item NumberPRO+G4036U-622101
Manufacturer Product Number622101
SKU - PIM Number1407439681469
ERP Number358334
Unit of MeasureEA
Weight160.0 Pounds (Lb)
Length21.0 Inches (In)
Width21.0 Inches (In)
Height60.0 Inches (In)
Country of OriginMEX
TierClassic Plus Series
BTU Input36000
Capacity Gallons40
CertificationsCSA Certified
CertificationsAHRI Certified
Connection Size3/4"
Fuel TypeNatural Gas
Gas TypeNatural Gas
Warranty OfferedYes
Energy Star RatedYes
ComplianceSCAQMD Rule 1121 compliant
UL ListedNo
Product FamilyPRO+G
GEM - Case Quantity


Parts List