The water / water heat exchanger with spiral tubes in cross flow as opposed to smooth spiral tubing, stainless steel or respectively titanium spiral tube offers high energy efficiency at low cost. The plastic shell can withstand high pressure and is corrosion resistant. The individual components are sealed with silicone gaskets and ensure the longevity of the entire heat exchanger. The cost-effectiveness and quality make the titanium version particularly attractive. As with all coiled tube heat exchangers, they must be integrated into the swimming water circuit either directly or via the bypass system.
