“475601 Pentair ETI400 Heat Pump Stack Flue Sensor” has been added to your cart. Continue shopping Product Price Quantity Total × 475601 Pentair ETI400 Heat Pump Stack Flue Sensor $53.04 475601 Pentair ETI400 Heat Pump Stack Flue Sensor quantity $53.04 Cart totals Subtotal $53.04 Shipping Shipping costs will be calculated once you have provided your address. Total $53.04 Proceed to checkout — OR — Calculate shipping Country / region: Select a country / region… United States (US) State / County: City: Postcode / ZIP: Update