Swedish design has always been known for its superior strength, safety and its rugged qualities. The Swedish-made Calesco waterbed heaters are no exception. The company has been making waterbed heaters for 30 years. The latest generation of 325 watt hardside waterbed heaters and the new 170 watt softside waterbed heaters utilize Texas Instrument components that monitor the comfort setting and turn on and off, as heat is needed.

According to Calesco’s Richard Anderson, "The heating elements for waterbeds distribute heat evenly for maximum sleeping comfort. They are flexible, have sensitive heat control and protection against overheating." He noted, "We deliver waterbed heaters for European and U.S. markets. We are the largest producer of waterbed heaters in the world." Anderson also said that, "the thin, watertight integrated control unit is a flexible solution for resistance heating." Calesco’s patented design meets UL 1445 Standards for the USA and CSA C22.2 No. 200 Standards for Canada. Each heating unit has a fire resistant coating and a safety thermistor that automatically cuts off, providing overheating protection.