The cost of aluminum flexible duct varies based on several factors:

– Type of Aluminum Alloy: The specific alloy used affects the price.

– Local vs. Imported: Purchasing locally or from an importer influences the cost.

– Design: Custom designs are more expensive than standard options.

– Manufacturer: Different manufacturers may offer varying prices, with potential discounts on minimum order quantities (MOQ).

– Size and Insulation: Larger or insulated ducts generally cost more per linear foot.

– Performance: High-performance ducts can also command higher prices.

Overall, the cost can range from a few dollars per linear foot for smaller sizes to $10 or more for larger or high-performance ducts. It is advisable to check current prices with local HVAC suppliers or online retailers for accurate cost estimates.