50 gallon Tall Residential Natural Gas Water Heater, 8 Year Warranty, Pro-Classic Plus

Rheem Professional Classic Plus 50-Gallon Natural Gas Water Heater – Atmospheric Vent, 40,000 BTU

The Rheem PRO+G50-40N-RH62 is a 50-gallon natural gas water heater from the Professional Classic Plus Series, designed for residential applications requiring consistent hot water delivery, low maintenance, and extended service life. This unit features a 40,000 BTU/hr low-NOx atmospheric burner and is configured for vertical B-vent installations.

It includes a self-diagnostic gas control system, silicon nitride hot surface ignition, and a maintenance-free combustion air intake—eliminating the need for filter cleaning or replacement. The system is engineered to simplify servicing and deliver dependable recovery rates for 3–5 person households.

Core Specifications

• Fuel Type: Natural Gas
• Nominal Tank Capacity: 50 gallons
• BTU Input: 40,000 BTU/hr
• Recovery Rate: Approximately 40.4 GPH @ 90°F temperature rise
• Energy Factor (EF): 0.62
• Venting: Atmospheric vent, vertical 3” or 4” B-vent
• Ignition System: Push-button pilot with silicon nitride hot surface ignition
• Water Connections: 3/4" NPT, top-mounted
• T&P Valve: Factory-installed
• Anode Rod: Premium-grade magnesium for corrosion resistance
• Warranty: 8-year limited (tank and parts), upgradeable to 12 years with ProtectionPlus™
• Height: Approx. 60-63" (varies by configuration)
• Diameter: Typically 22–23 inches

Design & Installation Notes

This model is intended for standard residential replacement or new installs with atmospheric venting. The combustion system does not require external filters or air intake cleaning, minimizing maintenance. Installers should verify venting, gas supply sizing, combustion air requirements, and local code compliance prior to installation. Electrical connection is not required for basic operation, making this unit suitable for homes without nearby power access.

Professional Application Overview

The PRO+G50-40N-RH62 is optimized for straightforward installation in retrofit or new construction settings. Contractors benefit from its plug-and-play ignition system, integrated diagnostics, and consistent hot water delivery under typical residential usage profiles. Extended warranty coverage provides assurance for long-term performance.