40 Gal. Short Water Heater, Residential, Gas, 40,000 BTU

$892.42
- +
In stock
1 Available At My Branch
45 Available At All US Supply Locations
Brand
Rheem
Part Number
PROG40S-40N-RH6
SKU
1952709
Rheem, PROG40S-40N-RH62

Rheem Professional Classic Plus 40-Gallon Natural Gas Water Heater – Atmospheric Vent, 40,000 BTU

The Rheem PROG40S-40N-RH62 is a 40-gallon natural gas water heater from the Professional Classic Plus series, designed for residential applications requiring reliable recovery, durable tank protection, and consistent performance. This unit features a 40,000 BTU input and a first-hour delivery rating suitable for mid-range domestic hot water demand.

Equipped with an atmospheric venting configuration, the unit is compatible with standard vertical vent installations using B-vent. The model includes electronic gas control for precision temperature regulation and integrated diagnostics for streamlined maintenance. Its tank protection includes a durable glass lining and a magnesium anode rod to resist corrosion in potable water conditions.

Technical Specifications

  • Fuel Type: Natural Gas
  • Tank Capacity: 40 gallons nominal
  • BTU Input: 40,000 BTU/hr
  • Recovery Rate: 40.4 gallons per hour at 90°F rise
  • Energy Factor (EF): 0.62
  • Venting: Atmospheric, vertical 3” or 4” B-vent
  • Ignition System: Push-button pilot ignition
  • Water Connections: 3/4" NPT top-mounted
  • Tank Lining: Fused glass coating with anode rod
  • Height: 53-7/8 inches
  • Diameter: 23 inches
  • Warranty: 6-year limited warranty on tank and parts

Design and Installation Notes

The unit’s compact footprint and standard connections simplify installation in retrofit and new construction applications. Atmospheric venting requires a proper vertical flue and adequate combustion air. Installation must comply with local gas, plumbing, and mechanical codes. The model includes a factory-installed temperature and pressure relief valve and meets low-NOx emissions standards where required.

Contractor Use Case

The PROG40S-40N-RH62 is a practical solution for residential installations where a moderate hot water load is anticipated. Its standard venting and gas input rating make it compatible with existing infrastructure in many retrofit projects. The electronic gas control and self-diagnostic capabilities assist in post-installation service and troubleshooting.

Specifications

Specifications
Height 50.5
Length 23
Width 23
Recommended 116
Brand Rheem
Manufacturer Part Number PROG40S-40N-RH6
Warranty 6 Years
Item Type Water Heaters
Finish Gray
Item Returns This item can be returned
Features