- 21 gallon per hour recovery at 90° Rise
- Single 4,500-watt heating element with low-watt density design prolongs element life and maximizes efficiency
- Open loop or closed loop solar water heater system install options available (solar panels not included)
- Prewired for surface mount temperature sensor (sensor supplied separately)
- Patented Blue Diamond® glass tank lining protects against corrosion
- DynaClean™ automatic cleaning system protects against sediment build-up
- Stainless steel CoreGard™ anode rod protects against corrosion longer than ordinary anodes
- Commercial-grade brass drain valve for durable and easy operation
- CSA Certified and ASME Rated T&P Relief Valve, Factory-Installed
- 6-year limited tank and parts warranty
The ProLine® 120-gallon direct solar booster water heaters are designed for installation as a part of a direct (open loop) solar water heating system or for use with external heat exchangers in closed loop systems. The SUN-120 provides storage for the hot water produced by the solar collectors and a supplementary electric heating element that maintains consistent water temperature during periods when solar energy is not available. Count on A. O. Smith for innovative products that provide hot water solutions for residential renewable energy applications. Environmentally-friendly insulation and factory-installed heat trap nipples reduce heat loss for maximum energy savings. A. O. Smith’s ProLine® water heaters are residential products built to commercial-grade standards and are only available for purchase through professional wholesalers and contractors.