19 Gal. Short Water Heater, Residential, Electric

Rheem® PROE20-1-RH-POU Professional Classic Electric Water Heater – Technical Product Information

The Rheem® PROE20-1-RH-POU Professional Classic Electric Water Heater is designed for compact utility applications requiring dependable hot water supply and long-term performance. Built for professional installation, this unit features a 20-gallon tank capacity and operates at 240 volts with dual 4500-watt heating elements for efficient water heating and recovery. Engineered to meet the needs of professional contractors, it incorporates copper and stainless steel element construction for corrosion resistance and durability. The Professional Classic Series offers consistent reliability with a focus on installation flexibility, system longevity, and efficient operation in point-of-use or auxiliary water heating systems.

Technical Specifications

• Manufacturer: Rheem®
• Model Number: PROE20-1-RH-POU
• Series: Professional Classic
• Tank Type: Short Utility Electric Water Heater
• Capacity: 20 gallons (75.7 liters)
• Voltage: 240 VAC
• Power Rating: 4500 watts
• Recovery Rate: 21 gallons per hour (gph) at a 90°F rise
• Element Type: Dual element – Copper Upper / Stainless Steel Lower
• Connection Type: 3/4 inch NPT water inlet and outlet
• Tank Construction: Heavy-gauge steel tank with glass lining for corrosion resistance
• Anode Rod: Magnesium or aluminum for extended tank life
• Insulation: Non-CFC foam insulation to minimize standby heat loss
• Operating Pressure: Maximum 150 psi
• Dimensions: 17 inch diameter x 31-1/2 inch height
• Mounting Configuration: Floor-mounted vertical installation
• Electrical Connection: Hardwired, single-phase
• Thermostat Control: Adjustable surface-mounted thermostat with manual reset
• Water Temperature Range: Factory preset 120°F, adjustable to higher settings
• Exterior Finish: Durable appliance-grade jacket
• Weight (Approx.): 26 lbs (shipping weight 20.5" x 26")
• Certifications: UL Listed, AHRI Certified, Meets NAECA Standards
• Warranty: 6-Year Limited Tank and Parts Warranty

Design and Performance Features

• Professional-grade design optimized for point-of-use and auxiliary water heating applications
• Dual 4500-watt elements deliver consistent and rapid water heating performance
• Copper upper and stainless steel lower heating elements ensure longevity and corrosion resistance
• High-efficiency insulation reduces standby heat loss for energy savings
• Heavy-duty glass-lined steel tank enhances durability and system integrity
• Compact profile allows installation in confined mechanical spaces or utility areas
• Field-replaceable elements and thermostats for simplified service and maintenance
• Complies with NAECA and UL standards for performance and safety
• Designed to integrate with existing plumbing and electrical systems for streamlined installation
• Professional Classic Series construction ensures consistent hot water delivery in demanding use cases

Professional Summary

The Rheem® PROE20-1-RH-POU Professional Classic 20-Gallon Electric Water Heater provides reliable performance, efficiency, and long-term service life for professional-grade installations. Its dual-element configuration, durable tank construction, and compact footprint make it suitable for utility rooms, auxiliary heating, or commercial support systems. Built to Rheem’s industry standards for durability and serviceability, this model ensures dependable operation and ease of maintenance for professional contractors requiring a versatile and robust water heating solution.