Therm 4.0kW [16.25" x 2"] Flo-Thru Incoloy Heater [Cal Spas] (26-0165-5S-K) impellers When larger-volume plumbing runs need

When larger-volume plumbing runs need to navigate equipment areas or gradual turns

Using the proper tool can help speed up maintenance and support cleaner results

Important for restoring a proper component seal

As a cleaner service component

Therm 4.0kW [16.25" x 2"] Flo-Thru Incoloy Heater [Cal Spas] (26-0165-5S-K) impellers When larger-volume plumbing runs needTherm [Cal Spas] 16. 25" 4. 0kW Flo Thru Incoloy Heater (26 0165 5S K) provides a targeted heating solution for Cal 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 16. 25" heater length should be matched to the original equipment requirements before installation, since spa heaters are not universally interchangeable. A heater