Ductwork – Design, Repair & Replacement

Ductwork Design, Repair & Replacement

Crawlspace Sealing & R-8 Insulation

Balanced airflow and sealed, insulated ducts for coastal homes. Manual D design, UL-rated sealing, R-8 insulation, return balancing, and duct leakage testing

Better Ducts. Better Comfort. Lower Bills.

Even the best HVAC equipment can’t overcome bad ductwork. At Pinnacle, we design, repair, and replace ducts so every room gets the airflow it needs—without wasting energy or pulling in coastal humidity.

Why Ducts Matter in the Lowcountry

Leaky or undersized ducts cause:

  • Longer run times and higher utility bills
  • Musty odors, dust circulation, and uneven comfort
  • Excess humidity pulled from crawlspaces or attics


Crawlspaces especially add risk if seams and boots aren’t properly sealed and insulated

Our Ductwork Solutions

  • Manual D design for properly sized systems (new installs & remodels)
  • Crawlspace upgrades: R-8 insulation, UL-rated sealing, vapor barriers
  • Repairs & replacements: fix crushed or kinked runs, correct slopes, add supports
  • Return air balancing: add or resize returns for better airflow & humidity control
  • Airflow balancing: adjust registers and dampers for even comfort
  • Duct leakage testing: verify efficiency and performance

Signs You May Need Duct Repairs

  • Certain rooms never feel comfortable
  • Excess dust, musty odors, or high indoor humidity
  • Whistling vents or noisy airflow
  • Sagging, torn insulation, or sweating ducts

Our Process

  1. Evaluate – Measure static pressure, airflow, and room loads
  2. Plan – Provide a simple sketch with repair/redesign recommendations
  3. Fix – Seal, insulate, replace, or rebalance ducts as needed
  4. Verify – Retest airflow and provide a short results report


Start with an airflow evaluation. Book Online or call (843) 271-3780 today.

Your favorite HVAC Brand Dealer

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Trusted HVAC Brands we work with

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Samsung logo: white
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Lennox logo: Red text, curved red line, white background.

Why Choose Pinnacle for Air Duct Cleaning in Port Royal?

For a cleaner, healthier home, trust the experts at Pinnacle Heating And Air:

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Improved Air Quality: Our service directly contributes to reducing allergens, dust, and odors circulating in your Port Royal home

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Enhanced System Efficiency: Clean ducts allow your HVAC system to operate more freely, potentially lowering energy consumption and bills.

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Advanced Equipment: We utilize powerful, specialized vacuum systems and brushes designed to effectively remove even stubborn debris from your entire ductwork system.