Your browser is not supported. For the best experience, you should upgrade to a modern browser with improved speed and security.

Rheem 621821 - PROG40-40N RH62 Rheem Professional Classic Atmospheric Water Heater, Natural Gas, 40K BTU, 40 Gallon, Tall

Item: PROG4040N-621821
MFR: 621821
Checking price...
Decrease quantity
Increase quantity

Your Order Templates
Save products for later, or create lists to quickly re-buy items for routine jobs.

Add to Order Template

Inventory At Nearby Branches



Professional Classic™ Atmospheric Series

  • .58 - .62 EF
  • More hot water at a low operating cost

  • FHR: 50 to 90 gallons for natural gas
  • Recovery: 30.3 to 50.5 gallons at a 90 degree rise, based on model

Guardian System™ & Sensor
  • Exclusive air/fuel shut-off device
  • Maintenance free - no filter to clean

Low Emissions
  • Eco-friendly burner, low NOx design
  • Meets 40 ng/J NOx requirements

Longer Life
  • Rheem exclusive R-Tech (resistored) anode rod provides long-lasting tank protection

High Altitude Compliant
  • All models certified up to 6,000 ft. above sea level
  • Some models certified up to 10,200 ft. above sea level, check factory for listings

  • Easy to light - no matches required
  • EverKleen™ patented system fights sediment build-up
  • Enhanced-flow brass drain valve
  • Low lead compliant
  • Temperature and pressure relief valve included
  • Standard replacement parts

  • 6-Year limited tank and parts warranty*
  • With ProtectionPlus™ the 6-year limited tank warranty becomes 10-year
  • * See Residential Warranty Certificate for complete information

Units meet or exceed ANSI requirements and have been tested according to D.O.E. procedures. Units meet or exceed the energy efficiency requirements of NAECA, ASHRAE standard 90, ICC Code and all state energy efficiency performance criteria.


NameRheem 621821 - PROG40-40N RH62 Rheem Professional Classic Atmospheric Water Heater, Natural Gas, 40K BTU, 40 Gallon, Tall
Gemaire Item NumberPROG4040N-621821
Manufacturer Product Number621821
SKU - PIM Number1404399737383
ERP Number341496
Unit of MeasureEACH
Weight135.0 Pound (lb.)
Length21.0 Inches (in)
Width21.0 Inches (in)
Height63.2 Inches (in)
Hazardous MaterialNo
EPA Cert RequiredNo
Country of OriginMEX
BTU Input40000
Capacity Gallons40
Connection Size3/4"
Fuel TypeNatural Gas
Warranty Offered6-Year limited tabd abd parts warranty* - *See Residential Waaranty Certificate for complete information.
Energy Star RatedNo
Product FamilyPROG
GEM - Case Quantity