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Replacement thermister probe (ESP Probe) for Harman and Heatilator Eco Choice stoves. ESP is short for Exhaust Sensing Probe. This is the probe with two (2) red wires. Fits the following HHT stove models:
Harman Pellet Stoves:
Harman Coal Stoves:
Heatilator Eco-Choice Pellet Stoves:
Harman part number 3-20-00844
OEM Harman part.