GlowCore A.C. Inc. was a Texas-based producer of gas-fired boilers and water heaters.  A Swiss chocolate maker had chosen to establish a facility in the United States for the reason that GlowCore was capable of precision temperatures.  GlowCore was also used in a New Hampshire resort because the piping and tubing for their product could be hidden.  This feature was important to create a luxurious environment at the resort.  The heat exchanger was made from stainless steel and was completely sealed and thus had no open flame. 

Replacement parts are sporadically available through sites such as Ebay and prior dealers.