PD_Q23_DuctSys Version 7.1.1

For each duct system, Rater/RFI verifies and documents the correct square feet served, # of returns, associated heating/cooling equipment, locations, % areas, R-values and duct surface areas. (return ducts using cavities may not yet be installed.)

• Some duct locations may not be visible at time of field QA. Verify that percentages seem reasonable for conditions found.
• Using rating software to estimate surface area is appropriate for most ducted systems. Any verified duct surface areas that deviate significantly from a software estimate (e.g. the small surface area of high-velocity ducts) should be documented in notes and/or photographs.

SCORING:

• Satisfactory: No errors in Duct System verification
• 1: One to two minor errors in Duct System verification (this is per system)
• 2: Three to four minor errors in Duct System verification OR one to two major errors in Duct System verification (this is per system)
• 3: Incorrect number of Duct Systems OR five or more minor errors in Duct System verification OR three or more major errors in Duct System verification (this is per system)

GUIDANCE:

Minor Duct Systems Verification Errors:

• Duct System Square Feet Served off 2% to 5%
• '#' of Return Grills off by 1
• Supply and Return Duct Area off by 5% to 10%
• Duct Location or Supply/Return percentages listed as correct location but incorrect condition (Attic, well vented vs Attic, well vented, under insulation)

Major Duct Systems Verification Errors:

• Incorrect field test status identified (Untested, Tested, Sampled)
• Incorrect identification of which Heating and Cooling Equipment Served by Duct System
• Incorrect Supply or Return Duct R-Value Identified
• Duct System Square Feet Served off by greater than 5%
• '#' of Return Grills off by 2 or more
• Supply and Return Duct Area off by greater than 10%
• Duct Location or Supply/Return percentages listed as incorrect location (Attic, well vented vs Garage)