$59.99 Brand new 17B0027 thermistor for HVAC applications. part# 17b0027n02/ ( Current carrier part number is 17B0027N06 ) These work for both the temperature sensors on geothermal/ground/water source heat pumps. They used to color code the wires so the wires would be different colors but the sensors are the same ones. ORIGINAL carrier parts, Two year warranty from us. In stock ready to ship today, express/overnight available. Sold by the piece. Free shipping.