FiberCor® insulation fills the cabinet completely with a density four times greater than the 8kg/m³ foam used in most hot tubs. FiberCor® is very evenly dispersed inside the spa cabinet, leaving no gaps or thermal voids. FiberCor® offers the same insulating value as polyurethane foam. It is an inorganic material that prevents mold and mildew.
2 Year Warranty
The 735L has a comprehensive 2 year parts and labour warranty. The warranty is serviced and supported by Happy Hot Tubs directly with no outsourcing or sub-contracted work. The warranty is backed by Hot Spring and their parent company, Masco who are a Fortune 500 company giving you total peace of mind with your purchase.