If your old Ozonator needs service we suggest you upgrade to the new KZO Corona Discharge Ozonator, the CoronaZone. This unit will fit all HotSpring/Tiger River/Solana Spas. This unit produces twice the ozone as the old units and carry a two year warranty. Adjustable inlet airflow system. Let us know what brand spa you own when ordering (comment section of order form). Includes ozone system, injector, ozone tubing, check valve, hose clamps, hardware, and installation instructions. The complete ready-to-install ozonator.