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Texas Contractor NetworkThe Texas trades directory
How-To & Guides 8 min read • Jul 5, 2026

HVAC Ductwork Replacement, Sizing & Static Pressure Balancing for Texas Homes

Fixing hot bedrooms and high electric bills caused by crushed, undersized flex ductwork in Texas attics. Manual D design, R-8 insulation, and static pressure testing.

Even the most expensive 20-SEER AC system cannot cool a home if choked by restrictive, poorly routed ductwork. Modern duct design relies on ACCA Manual D airflow calculations and airtight mastic sealing.

Signs of Failing Ductwork in Texas

  • Noticeable temperature differences (5°F+) between bedrooms and central living zones.
  • Duct sweating or water staining on sheetrock ceilings around supply grilles.
  • High static pressure causing blower motor strain and early failure.

Frequently Asked Questions

How much does it cost to replace ductwork in a Texas home?

Complete ductwork replacement for a 2,000 sq ft home in Texas averages $3,800 to $6,500 using R-8 insulated flexible ducting with mastic-sealed supply and return plenums.

Why are bedrooms hotter than the rest of the house in Texas?

Hot bedrooms are almost always caused by undersized supply branch ducts, lack of dedicated return air paths, or excessive duct static pressure forcing air back into shorter runs.

What R-value duct insulation is required in Texas attics?

Current Texas energy codes require a minimum of R-8 insulation on all supply and return ductwork routed through unconditioned attics to prevent condensation sweating.

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