Therm [Caldera Spas] 15" 2.0kW Flo-Thru Incoloy Heater (26-3330-2S-K) smartpool A fixed internal is useful

A fixed internal is useful because it helps deliver a consistent water pattern through the jet face

O-ring kit with seal for compatible SuperFlo and SuperMax pump applications

Part number 6570WC helps confirm the correct item before ordering

The 4404120105 kit is a practical repair option for compatible Astral Pool side-mount valves that need renewed spring tension and internal hardware support

The Waterway 505-3010 Clearwater valve split nut is designed for compatible pre-2001 models

Therm [Caldera Spas] 15" 2.0kW Flo-Thru Incoloy Heater (26-3330-2S-K) smartpool A fixed internal is usefulTherm [Caldera Spas] 15" 2. 0kW Flo Thru Incoloy Heater (26 3330 2S K) is a replacement heater developed around the fit and operating requirements of Caldera Spas, making it a practical choice when the original heater assembly must be matched carefully. Its 2. 0kW heating output and 15" heater length should be matched to the original equipment requirements before installation, since spa heaters are not universally interchangeable. When a spa struggles