Abstract
A fire in a multi-unit condominium complex occurred, causing the building to be a complete loss. The point of the fire’s origin was traced to a recently drained hot tub’s electric heater. Examination of an exemplar heater revealed that a key safety-related control feature was manufactured in a configuration inconsistent with its original patent drawings in a way that would have lessened its performance for what may have been cost of manufacturing considerations. This change also brought into question whether the control that was reportedly tested at Underwriters Laboratory was one designed to the patent specifications. The manufacturer has since discontinued use of the control for subsequent installations.
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