The Spa Components 5.5 kW flo thru heater is designed for compatible 2 inch by 15 inch 240 volt applications that do not use an integrated pressure switch. Heaters in this configuration are useful when the control setup already accounts for pressure monitoring elsewhere in the system and the replacement needs to match that arrangement.This model is especially useful when the original heater has stopped heating effectively, developed an electrical fault, or is no longer dependable in everyday operation. Matching the no-pressure-switch format helps keep the replacement aligned with the original control and plumbing design.It is a practical service option when restoring a compatible higher-output heater is more important than adapting the system around a different assembly style. Spa Components 5.5 kW flo thru heater Compatible 2 inch by 15 inch size with 240 volt operation Configured without an integrated pressure switch Useful when the original heater has failed or become inconsistent Supports accurate replacement matching and dependable heating