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This whole house fan is suspended from rafters and connected to the intake grille by a curved insulated duct, greatly reducing vibration and noise in the occupied space

This whole house fan is suspended from rafters and connected to the intake grille by a curved insulated duct, greatly reducing vibration and noise in the occupied space
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This whole-house fan is suspended from rafters and connected to the intake grille by a curved acoustic duct, greatly reducing vibration and noise in the occupied space

This whole-house fan is suspended from rafters and connected to the intake grille by a curved acoustic duct, greatly reducing vibration and noise in the occupied space
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Thornhill Custom Homes built this custom spec home in the hot-humid climate in Dallas, TX, and certified it to DOE Zero Energy Ready Home specifications in 2017.

Thornhill Custom Homes built this custom spec home in the hot-humid climate in Dallas, TX, and certified it to DOE Zero Energy Ready Home specifications in 2017.
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Thrive Home Builder built this affordable home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2018.

Thrive Home Builder built this affordable home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2018.
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Thrive Home Builders built this multi-family home in the cold climate in Wheat Ridge, CO, and certified it to DOE Zero Energy Ready Home specifications in 2020.

Thrive Home Builders built this multi-family home in the cold climate in Wheat Ridge, CO, and certified it to DOE Zero Energy Ready Home specifications in 2020.
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Thrive Home Builders built this multifamily home in the cold climate in Lone Tree, CO, and certified it to DOE Zero Energy Ready Home specifications in 2017.

Thrive Home Builders built this multifamily home in the cold climate in Lone Tree, CO, and certified it to DOE Zero Energy Ready Home specifications in 2017.
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Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2019.

Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2019.
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Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2017.

Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2017.
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Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2016.

Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2016.
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Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2019.

Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2019.
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Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2018.

Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2018.
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Tim O'Brien Homes built this custom for buyer home in the cold climate in New Berlin, WI, and certified it to DOE Zero Energy Ready Home specifications in 2019.

Tim O'Brien Homes built this custom for buyer home in the cold climate in New Berlin, WI, and certified it to DOE Zero Energy Ready Home specifications in 2019.
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Tim O'Brien Homes built this custom for buyer home in the cold climate in Sun Prairie, WI, and certified it to DOE Zero Energy Ready Home specifications in 2021.

Tim O'Brien Homes built this custom for buyer home in the cold climate in Sun Prairie, WI, and certified it to DOE Zero Energy Ready Home specifications in 2021.
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Tim O'Brien Homes built this custom home in the cold climate in New Berlin, WI, and certified it to DOE Zero Energy Ready Home specifications in 2018.

Tim O'Brien Homes built this custom home in the cold climate in New Berlin, WI, and certified it to DOE Zero Energy Ready Home specifications in 2018.
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Tim O'Brien Homes built this custom spec home in the cold climate in New Berlin, WI, and certified it to DOE Zero Energy Ready Home specifications in 2020.

Tim O'Brien Homes built this custom spec home in the cold climate in New Berlin, WI, and certified it to DOE Zero Energy Ready Home specifications in 2020.
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To attach the flex duct to a main trunk duct or any other connection, the flex duct is pulled over the connecting collar at least 2 inches past the raised bead, then the insulation is pulled back

To attach the flex duct to a main trunk duct or any other connection, the flex duct is pulled over the connecting collar at least 2 inches past the raised bead, then the insulation is pulled back
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To increase surface area and reduce pressure drop for high MERV filters, the return duct can be constructed to permit the installation of two furnace filters side by side

To increase surface area and reduce pressure drop for high MERV filters, the return duct can be constructed to permit the installation of two furnace filters side by side
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To perform a duct leakage to outside test, the home must be pressurized using a blower door while the duct test is carried out at the same pressure.

To perform a duct leakage to outside test, the home must be pressurized using a blower door while the duct test is carried out at the same pressure.
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To prepare for a total duct test at final, cover all of the supply outlets and return inlets

To prepare for a total duct test at final, cover all of the supply outlets and return inlets
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To prepare for a total duct test at rough-in, cover all of the supply outlets and return inlets

To prepare for a total duct test at rough-in, cover all of the supply outlets and return inlets
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Total Rater-measured duct leakage ≤ 8 CFM25 per 100 sq. ft. of conditioned area

Total Rater-measured duct leakage ≤ 8 CFM25 per 100 sq. ft. of conditioned area
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Transfer grill sealed with mastic

Transfer grill sealed with mastic
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Transfer grille not sealed

Transfer grille not sealed
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Transfer grills and jump ducts provide pathways for air to reach the centrally located HVAC return grille, even when bedroom doors are shut.

Transfer grills and jump ducts provide pathways for air to reach the centrally located HVAC return grille, even when bedroom doors are shut.