Ductwork Installation Cost Calculator
Estimate the cost to install a new duct system based on your home size, material preference, and attic or crawl space accessibility.
How It Works
Enter home size
Square footage determines the total linear footage of duct runs needed.
Select material
Choose sheet metal, flexible duct, or fiberglass duct board based on your budget.
Add accessibility factor
Attic installs are cheaper than crawl spaces; basement is easiest.
Ductwork Material Cost Comparison
| Material | Cost Per Linear Ft | Best For |
|---|---|---|
| Sheet Metal | $14 – $24 | Long-term durability |
| Flexible Duct | $9 – $16 | Budget-conscious installs |
| Fiberglass Duct Board | $11 – $23 | Insulation + airflow |
| Rigid Fiberglass | $13 – $25 | Tight spaces |
Frequently Asked Questions
How much does ductwork installation cost?
Ductwork installation costs $9–$25 per linear foot depending on material and accessibility. A typical home needs 150–300 linear feet of ductwork. Full system installation for a 2,000 sq ft home costs $3,000–$8,000. Tight attic or crawl space access increases cost by 20–40%. Sheet metal ducts cost the most but last 25–30 years. Flexible ducts are less expensive but less durable.
What type of ductwork is best?
Sheet metal (galvanized steel or aluminum) is the most durable choice — it lasts 25–30 years and provides the best airflow efficiency. Flexible duct is the most common for runs to individual vents due to ease of installation. Rigid fiberglass duct board provides insulation built-in. Avoid excessively long flexible duct runs (over 10 feet) and sharp bends, which restrict airflow significantly.
How do I know if my ductwork needs to be replaced?
Signs ductwork needs replacement: age over 15–20 years, rooms that don't reach set temperature, high energy bills with no change in usage, excessive dust from vents, musty or stale smells from HVAC, visible damage or disconnected sections in accessible areas, or professional duct testing showing leakage above 10% of system airflow.
Can leaky ducts be sealed instead of replaced?
Yes — duct sealing with mastic sealant or metal tape is the most cost-effective solution for mildly leaky ducts and can reduce energy loss by 20–30%. Aeroseal (pressurized sealant blown through the system) costs $1,500–$3,500 and seals leaks throughout the system. Only replace ductwork when it is severely damaged, disconnected, improperly installed, or very old (25+ years).
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Answer 5 quick questions for a cost range based on your home.
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