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The QwikDetector-HE claims to detect heat exchanger leaks for all brands of high-efficiency gas-fired condensing furnaces. The patented formula is designed to penetrate a heat exchanger fissure as small as 24/1000-inch after only one five-second spray into a drilled 1/8-inch furnace plenum hole. A conventional electronic refrigerant sniffer used at the furnace exhaust point will accurately determine whether the heat exchanger is breached by detecting the QwikDetector-HE’s sensitive ether-based chemical blend. The QwikDetector-HE is available at all Johnstone Supply locations and Long Item Development (LID) group members.