Balboa BP 4.0kW [15" x 2"] Titanium FloThru Spa Heater [w/PnC] (G7432) gshop If the original impeller is

If the original impeller is worn

make alignment easier

directly shaping flow performance and everyday circulation efficiency

and this Coates 1

It is a practical replacement when the original insert no longer delivers the intended massage effect or has become worn at the surface

Balboa BP 4.0kW [15" x 2"] Titanium FloThru Spa Heater [w/PnC] (G7432) gshop If the original impeller isWhen your spa heating starts to feel unreliable, the issue is often not just about temperature. It is about whether the system can heat smoothly, consistently, and without becoming the weak point in the entire setup. This Balboa BP FloThru Heater is built for compatible 230 volt systems needing 4. 0kW output, with a titanium element that adds a meaningful durability advantage in treated water environments. The FloThru design helps water pass