SpaPartsNet.Com: The finest Customer Technical Support the World Over! Toll Free: 1-866-364-9681 Spa-Packs-Controls Spa-Pumps Electric-Heaters-Parts Blowers-Motors Spa-Replumbing Air-Buttons Electrical-Parts Circuit-Boards See More at SpaPartsNet As-Multi Combo-95 $95.00 Contactor, DPST As low as $28.30 Waterway Manifold 2in S x 2in S x (6) 3/4in RB Ports $9.50 Waterway Massage Jet Internal - Poly, Deluxe Series $25.00 Brett Heater Gasket Set $11.95 Circulation Pump Based Heating Systems, Watkins Hot Springs Previous The same operating principles described in the previous section apply to this spa heating system as well.  The only difference is the circulation pump, plumbing, and heater design.  Any suggestions?  (We're always looking for new things here!) Email us:  Site Suggestions   Parts or Tech Help