Continue shopping “Original Pentair ThermalFlo Ultratemp ETi Hybrid Heat Pump Probe Thermistor Defrost Sensor 473665” has been added to your cart. Product Price Quantity Total × Original Pentair ThermalFlo Ultratemp ETi Hybrid Heat Pump Probe Thermistor Defrost Sensor 473665 $41.99 Original Pentair ThermalFlo Ultratemp ETi Hybrid Heat Pump Probe Thermistor Defrost Sensor 473665 quantity $41.99 Cart totals Subtotal $41.99 Total $41.99 Proceed to checkout — OR — Coupon: