No-Fault PDR Titanium Heater comes with thermistor o-rings. This model has a. Double-pass design, which helps with the heating of the water. A replacement for all Hot Spring Spas, 1995-current, that are 1.5 / 6kW. 73790 Heater is a replacement for the following models. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Spas & Hot Tubs”. The seller is “hottubspasupply” and is located in this country: US. This item can be shipped to United States.
