40 Gal. Short Water Heater, Residential, Gas, 34,000 BTU

Rheem Professional Classic 40-Gallon Natural Gas Water Heater – 34,000 BTU, Atmospheric Vent

The Rheem PROG40S-34N-RH62 is a 40-gallon natural gas water heater designed for residential use where reliable recovery and space-conscious installation are required. With a 34,000 BTU/hr burner and a recovery rate of 34.3 gallons per hour at a 90°F rise, this model supports consistent hot water delivery for homes with moderate demand.

This unit features a short-profile tank, making it suitable for installations in locations with limited vertical clearance. It includes a push-button ignition system, electronic gas control with diagnostic LEDs, and a maintenance-free combustion air intake. The tank is glass-lined and protected with a magnesium anode rod to extend service life.

Technical Specifications

• Fuel Type: Natural Gas
• Nominal Capacity: 40 gallons
• BTU Input: 34,000 BTU/hr
• Recovery Rate: 34.3 GPH @ 90°F rise
• Energy Factor: 0.62 (meets NAECA efficiency standards)
• Venting Type: Atmospheric vent, vertical through 3" or 4" B-vent
• Ignition System: Push-button pilot with electronic control
• Water Connections: 3/4" NPT, top-mounted
• Tank Protection: Glass-lined with anode rod
• Diameter: 21 inches
• Height: 52-1/8 inches
• Warranty: 6-year limited warranty on tank and parts

Installation Considerations

This model is designed for indoor installations using vertical atmospheric venting. It does not require electrical power, making it suitable for areas without nearby outlets. Venting, gas line sizing, combustion air availability, and code compliance must be verified prior to installation. It is recommended that installation be performed by a licensed professional.

Contractor Application Notes

The PROG40S-34N-RH62 is suited for replacement scenarios where ceiling height is limited and a short water heater is needed. It provides reliable operation, straightforward servicing, and meets DOE energy efficiency requirements. Integrated diagnostics and maintenance-free combustion air intake streamline both installation and routine service tasks.