Showing results 1 - 50 of 229
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A constant airflow regulator is a modulating orifice that automatically regulates airflows in duct systems to constant levels
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A constant airflow regulator is fitted into the neck of the supply duct to control air flow to deliver the design airflow regardless of pressure variations
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A duct leakage test is performed on a ducted heat pump system using a duct tester (blower fan) and a digital manometer.
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A ducted central return brings air from central return registers back to the air handler through insulated, air-sealed ducts
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A nylon draw band and tensioning tool are used to secure the inner coil of the pre-insulated flexible duct
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A nylon draw band and tensioning tool are used to secure the inner liner of the pre-insulated flexible duct
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A technician assembles the spray sealant injection system to seal HVAC ducts from the inside
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After securing the inner coil, cover the draw band and the seam with a generous amount of mastic
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Air seal and insulate flex ducts
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Air seal duct boot to ceiling by installing fiberglass mesh tape and mastic over seam
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All other supply ducts and all return ducts in unconditioned space have insulation ≥ R-6
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Back-draft damper still has a piece of tape that prevented it from rattling during shipping
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Bedrooms pressure-balanced and provide 1 sq. in. of free area opening per 1 CFM of supply air or achieve a Rater-measured pressure differential ≤ 3 Pa
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Bedrooms pressure-balanced and provide 1 sq. in. of free area opening per 1 CFM of supply air or achieve a Rater-measured pressure differential ≤ 3 Pa
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Building cavities not used as supply or return ducts unless they meet Items 3.2, 3.3, 4.1, and 4.2 of this Checklist
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Cavity used for return is not insulated and is not air sealed, which will pull in air from outside
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Collars that are specifically made for flexible duct have a raised bead to prevent the duct from slipping off
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Connect the plastic application tunnel from the injection equipment to the supply plenum.
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Cut fiber board with a red V-groove tool and a gray shiplap tool to create mitered corners and a shiplapped edge for duct sections
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Door has been undercut to allow for specified amount of air flow therefore contributing to pressure balancing
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Duct boot is air sealed to ceiling by covering the seam with fiberglass mesh tape and mastic
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Duct boots sealed to floor, wall, or ceiling using caulk, foam, mastic tape, or mastic paste
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Duct lacks adequate support to carry the weight so the few straps are pinching the duct
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