Therm 4.0kW [13.5" x 2"] Flo-Thru Incoloy Heater [Saratoga Spas] (26-H3037-5S-K) leaftraps supporting dependable sealing and proper

supporting dependable sealing and proper handle operation

or inconsistent heater performance

The W3SP2603VSP is a practical replacement for compatible Hayward systems that need renewed variable-speed pump performance and cleaner long-term operation

Useful when multiple functions begin acting inconsistently

24V replacement is needed to restore reliable electrical control without changing the intended system design

Therm 4.0kW [13.5" x 2"] Flo-Thru Incoloy Heater [Saratoga Spas] (26-H3037-5S-K) leaftraps supporting dependable sealing and properTherm [Saratoga Spas] 13. 5" 4. 0kW Flo Thru Incoloy Heater (26 H3037 5S K) provides a targeted heating solution for Saratoga Spas, combining the specified output and construction needed to restore consistent water heating without relying on a generic substitute. Its 4. 0kW heating output and 13. 5" heater length should be matched to the original equipment requirements before installation, since spa heaters are not universally interchangeable. A