Duct Flow Performance

Brownsville Public Utilities Board > GoGreen > Rebate Programs > Duct Flow Performance

Efficient Duct Systems Optimize
the Home's Comfort Delivery System

To create a comfortable home, an efficient duct system is a must. Ducts - known collectively as the air distribution system - carry air from the central heater or air conditioner to each part of the home and back again.

In a typical house, about 20 percent of the air that moves through the duct system is lost due to leaks, holes, and poorly connected ducts. That's why the duct systems found in ENERGY STAR-qualified homes are third-party tested for tightness and verified to be correctly insulated.

Benefits of Efficient Duct Systems

Improved Comfort. When ducts are correctly sealed and insulated, they deliver conditioned air more effectively to all rooms - helping to ensure a more constant temperature throughout the home.

Lower Utility Bills. The average homeowner spends more than $600 on space heating and cooling each year. Tightly sealed and well-insulated ducts found in ENERGY STAR-qualified homes can reduce annual utility bills by $120 or more.

They improved Indoor Air Quality. Leaky ducts in attics, unfinished basements, crawl spaces, and garages can allow dirt, dust, moisture, pollen, pests, and fumes to enter the home. Sealing these ducts helps improve indoor air quality.

Lower Equipment Costs. When ducts are leaky, the heating and cooling system has to work harder to condition the home. Duct sealing, along with proper insulation, allows the installation of a smaller, less costly heating and cooling system.

Building Efficient Duct Systems

Techniques and practices that provide an efficient and effective duct system include:

Ducts in Conditioned Spaces

Ducts in Conditioned Spaces. Ducts operate more efficiently in conditioned air at room temperature. They work poorly in excessively hot or cold attics and crawl spaces.

Sealed Ducts

Sealed Ducts. EPA promotes using mastic or Underwriters Laboratory (UL) 181-approved tapes, such as metal-backed tape, to seal ducts. These materials more effectively seal leaks around duct joints and seams than standard "duct tape."

Insulated Ducts

Insulated Ducts. Leaky ducts and poorly sealed connections can waste 20% or more of the air you pay to heat and cool. To minimize this energy loss, EPA first recommends installing ducts in conditioned spaces. Where this is impossible, ducts should be insulated as the International Energy Conservation Code (IECC) recommends.

Right-Sized Ducts

Right-Sized Ducts. Ducts in ENERGY STAR-qualified homes are sized based on the Air Conditioning Contractors of America (ACCA) Manual J and D calculations. This helps to ensure that the ducts accommodate the airflow requirements of the heating and cooling system for efficient distribution of heated or cooled air.

Residential Program Guidelines
Residential Program Guidelines
  • Replacement of existing ductwork or the repair and improvement of existing ductwork; for retrofit only.
  • A licensed TACL contractor must do the work.
  • A rebate of 25% of the cost to replace or repair the duct system, up to $500/ system.
  • BPUB will pay for the final testing of the system or 50% of the cost of testing, up to $125/system.
  • Initial duct blaster test to establish base leakage; final test to establish results; all results must be sent to BPUB.
  • Pre-test must show at least 20% or more leakage in the duct system to qualify to participate.
  • Post-testing of the repairs and replacement must show 10% or less leakage in the duct system to qualify.
  • A HERS Certified Rater must do testing.
  • Duct Performance Rebate Application
  • Call (956) 983-6282 or email to verify your application was received.
  • Terms & Conditions