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Duct to boot connection of jump duct not fastened and sealed
Duct to boot connection of jump duct not fastened and sealed
Duct to boot connection of jump duct not fastened and sealed
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Duct work is uninsulated and not sealed at seams
Duct work is uninsulated and not sealed at seams
Duct work is uninsulated and not sealed at seams
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Ducts are insulated but strapping is compressing the insulation therefore reducing the R-value
Ducts are insulated but strapping is compressing the insulation therefore reducing the R-value
Ducts are insulated but strapping is compressing the insulation therefore reducing the R-value
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Ducts are properly insulated and supported without compressing the insulation
Ducts are properly insulated and supported without compressing the insulation
Ducts are properly insulated and supported without compressing the insulation
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Ducts are run straight and supported properly
Ducts are run straight and supported properly
Ducts are run straight and supported properly
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Ducts crammed into cavity, kinked and sharply bent
Ducts crammed into cavity, kinked and sharply bent
Ducts crammed into cavity, kinked and sharply bent
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Ducts properly installed without compression and appropriately supported
Ducts properly installed without compression and appropriately supported
Ducts properly installed without compression and appropriately supported
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Ducts properly installed without compression and appropriately supported
Ducts properly installed without compression and appropriately supported
Ducts properly installed without compression and appropriately supported
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Ducts sagging because supports not installed at regular intervals
Ducts sagging because supports not installed at regular intervals
Ducts sagging because supports not installed at regular intervals
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Ducts should not be located in exterior wall cavities
Ducts should not be located in exterior wall cavities
Ducts should not be located in exterior wall cavities
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Ducts well supported
Ducts well supported
Ducts well supported
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Ducts well supported
Ducts well supported
Ducts well supported
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Ducts well supported
Ducts well supported
Ducts well supported
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Ducts well supported by framing and straps as needed
Ducts well supported by framing and straps as needed
Ducts well supported by framing and straps as needed
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Electronically controlled dampers allow this central air system to provide zoned heating and cooling to specific parts of the home.
Electronically controlled dampers allow this central air system to provide zoned heating and cooling to specific parts of the home.
Electronically controlled dampers allow this central air system to provide zoned heating and cooling to specific parts of the home.
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Example of an HVAC installer’s balancing report form
Example of an HVAC installer’s balancing report form
Example of an HVAC installer’s balancing report form
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Excessive length of duct installed
Excessive length of duct installed
Excessive length of duct installed
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Excessive length of duct installed causing sharp bends
Excessive length of duct installed causing sharp bends
Excessive length of duct installed causing sharp bends
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Exhaust fans in separate dwelling units should not share a common exhaust
Exhaust fans in separate dwelling units should not share a common exhaust
Exhaust fans in separate dwelling units should not share a common exhaust
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Fan housing was oriented in the correct direction to allow proper exhaust duct installation
Fan housing was oriented in the correct direction to allow proper exhaust duct installation
Fan housing was oriented in the correct direction to allow proper exhaust duct installation
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Fan shares exhaust and does not have dack-draft damper installed
Fan shares exhaust and does not have dack-draft damper installed
Fan shares exhaust and does not have dack-draft damper installed
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Fan shares exhaust and has a back-draft damper installed
Fan shares exhaust and has a back-draft damper installed
Fan shares exhaust and has a back-draft damper installed
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Fans from seperate dwellings exhausted together without back-draft dampers and not sealed
Fans from seperate dwellings exhausted together without back-draft dampers and not sealed
Fans from seperate dwellings exhausted together without back-draft dampers and not sealed
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Fiber board sheets are available with pre-cut shiplapped ends
Fiber board sheets are available with pre-cut shiplapped ends
Fiber board sheets are available with pre-cut shiplapped ends
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Fiberglass duct board typically comes in sheets 4 foot wide by 10 foot long
Fiberglass duct board typically comes in sheets 4 foot wide by 10 foot long
Fiberglass duct board typically comes in sheets 4 foot wide by 10 foot long
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Fiberglass mesh tape is installed around a duct boot in preparation for air sealing with mastic
Fiberglass mesh tape is installed around a duct boot in preparation for air sealing with mastic
Fiberglass mesh tape is installed around a duct boot in preparation for air sealing with mastic
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Flex ducts are compressed
Flex ducts are compressed
Flex ducts are compressed
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Flexible ducts in unconditioned space not installed in cavities smaller than outer duct diameter; in conditioned space not installed in cavities smaller than inner duct diameter
Flexible ducts in unconditioned space not installed in cavities smaller than outer duct diameter; in conditioned space not installed in cavities smaller than inner duct diameter
Flexible ducts in unconditioned space not installed in cavities smaller than outer duct diameter; in conditioned space not installed in cavities smaller than inner duct diameter
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Flexible ducts supported at intervals as recommended by mfr. but at a distance ≤ 5 ft
Flexible ducts supported at intervals as recommended by mfr. but at a distance ≤ 5 ft
Flexible ducts supported at intervals as recommended by mfr. but at a distance ≤ 5 ft
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Framing allowed duct work to be properly installed without compression
Framing allowed duct work to be properly installed without compression
Framing allowed duct work to be properly installed without compression
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Grill and duct size based on calculated requirements for net free area
Grill and duct size based on calculated requirements for net free area
Grill and duct size based on calculated requirements for net free area
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Hand tools for cutting fiber board sheets include a knife, straight edge, and color-coded edge-cutting tools
Hand tools for cutting fiber board sheets include a knife, straight edge, and color-coded edge-cutting tools
Hand tools for cutting fiber board sheets include a knife, straight edge, and color-coded edge-cutting tools
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HVAC duct layout
HVAC duct layout
HVAC duct layout
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HVAC ducts, cavities used as ducts, and combustion inlets and outlets may pass perpendicularly through exterior walls but shall not be run within exterior walls unless at least R-6 continuous insulation is provided on exterior side of the cavity
HVAC ducts, cavities used as ducts, and combustion inlets and outlets may pass perpendicularly through exterior walls but shall not be run within exterior walls unless at least R-6 continuous insulation is provided on exterior side of the cavity
HVAC ducts, cavities used as ducts, and combustion inlets and outlets may pass perpendicularly through exterior walls but shall not be run within exterior walls unless at least R-6 continuous insulation is provided on exterior side of the cavity
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If HVAC duct must be installed in an exterior wall, separate it from the exterior with at least R-6 of continuous rigid insulation
If HVAC duct must be installed in an exterior wall, separate it from the exterior with at least R-6 of continuous rigid insulation
If HVAC duct must be installed in an exterior wall, separate it from the exterior with at least R-6 of continuous rigid insulation
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If wall registers are desired, install HVAC ducts in interior wall cavities
If wall registers are desired, install HVAC ducts in interior wall cavities
If wall registers are desired, install HVAC ducts in interior wall cavities
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Inadequate amount of insulation installed with compression, misalignment, and voids
Inadequate amount of insulation installed with compression, misalignment, and voids
Inadequate amount of insulation installed with compression, misalignment, and voids
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Install ducts without excessive coils or loops
Install ducts without excessive coils or loops
Install ducts without excessive coils or loops
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Install ducts without kinks or sharp bends
Install ducts without kinks or sharp bends
Install ducts without kinks or sharp bends
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Install supply registers in floors or ceilings to avoid routing ducts through exterior walls
Install supply registers in floors or ceilings to avoid routing ducts through exterior walls
Install supply registers in floors or ceilings to avoid routing ducts through exterior walls
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Insulation does not cover boot and is not sealed
Insulation does not cover boot and is not sealed
Insulation does not cover boot and is not sealed
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Insulation does not cover boot and is not sealed
Insulation does not cover boot and is not sealed
Insulation does not cover boot and is not sealed
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Insulation does not cover boot and is not sealed
Insulation does not cover boot and is not sealed
Insulation does not cover boot and is not sealed
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Manual D details show duct size and chase path
Manual D details show duct size and chase path
Manual D details show duct size and chase path
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Manually seal around ceiling registers with foil tape
Manually seal around ceiling registers with foil tape
Manually seal around ceiling registers with foil tape
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Manually seal around ceiling registers with mastic
Manually seal around ceiling registers with mastic
Manually seal around ceiling registers with mastic
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Manually seal around the return plenum
Manually seal around the return plenum
Manually seal around the return plenum
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Manually seal around the supply plenum
Manually seal around the supply plenum
Manually seal around the supply plenum
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Manually seal seams in the air handler box with foil tape
Manually seal seams in the air handler box with foil tape
Manually seal seams in the air handler box with foil tape
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Manually seal seams in the return plenum
Manually seal seams in the return plenum
Manually seal seams in the return plenum
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