Description
Return your 300 series heater to full thermal capacity with the Pentair Tube Sheet Coil Assembly 77707-0233, a factory-original heat exchanger replacement engineered for high-output heater models. This kit serves Pentair MasterTemp pool and spa heater models 300NA and 300LP, as well as the Pentair Sta-Rite Max-E-Therm NA and LP series pool/spa heater model 300. Shipped complete with a coil sealing o-ring kit and essential gasket components, the assembly is sized at 18-1/2 inches in length, 10-1/2 inches in height, and 18-1/2 inches in width for exact-fit installation. Built from materials rated for the demanding thermal environment inside a heater combustion chamber, this kit restores efficient heat transfer and reliable operation.
