Williams Comfort Products 5ES15H3G Electric Solar Pump

Product Description

The WILLIAMS COMFORT PRODUCTS 5ES15H3G is a 1.5 HP electric solar pump designed for solar thermal and hydronic heating systems. This pump moves fluid through a closed-loop or open-loop solar collector circuit, maintaining steady flow rates required for efficient heat transfer. It features a 3-gallon flow capacity with a 3-way, 3-port valve configuration, allowing for directional flow control without additional bypass hardware. Licensed HVAC and plumbing contractors typically specify this unit in solar-assisted domestic hot water and space heating installations where reliable pump performance is critical to system efficiency.

The 5ES15H3G suits residential and light commercial solar thermal installations. The 3-way, 3-port design integrates into systems that require zone switching or bypass capability at the pump assembly, reducing the number of separate components needed in a solar loop. It is appropriate for glycol-based or water-based heat-transfer fluid circuits typical in drainback and pressurized solar collector systems. Plumbing and HVAC contractors working on solar thermal retrofits or new construction installs will find this pump sized for common residential collector arrays.

Key Features

• 1.5 HP motor output suited for solar thermal and hydronic loop applications
• 3-gallon rated flow capacity for consistent fluid movement through collector circuits
• 3-way, 3-port valve configuration enables directional control at the pump assembly
• Electric-driven operation compatible with standard solar system controls and controllers
• Sold as an individual unit with a minimum order quantity of one

Compatibility

Designed as an OEM-style replacement or direct-install pump for solar thermal and hydronic heating systems requiring a 1.5 HP, 3-way, 3-port pump assembly.

Installation Notes

Installation should be performed by a licensed plumbing or HVAC technician familiar with solar thermal systems and applicable local codes. Shut off power to all connected controls and isolate the fluid circuit before removing or installing the pump. Verify that the heat-transfer fluid type and system operating pressure are compatible with the pump before commissioning. Follow IFGC and IPC guidelines as applicable, and ensure all electrical connections comply with NEC requirements for the installation environment.

Technical Specifications

• Motor Output: 1.5 HP
• Flow Configuration: 3-gallon, 3-way, 3-port
• Weight: 98 pounds
• UPC: 662459946492
• Unit of Measure: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: 5ES15H3G