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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 keep chase width to a minimum, use flat sheet metal as opposed to a collar and flex duct for supplies into rooms where the chase is located

To keep chase width to a minimum, use flat sheet metal as opposed to a collar and flex duct for supplies into rooms where the chase is located
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To measure air flow, a hole was made in this flex duct; a more accurate measurement could be taken if the duct material were rigid metal, not flex duct

To measure air flow, a hole was made in this flex duct; a more accurate measurement could be taken if the duct material were rigid metal, not flex duct
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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 Duct Leakage Tests

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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 Grilles (1)

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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.
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Transformations built this production home in the cold climate in Devens, MA, and certified it to DOE Zero Energy Ready Home specifications in 2013.

Transformations built this production home in the cold climate in Devens, MA, and certified it to DOE Zero Energy Ready Home specifications in 2013.
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Trunk to duct connections are only mechanically fastened and not sealed

Trunk to duct connections are only mechanically fastened and not sealed
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Trunk to duct connections are properly insulated and have been sealed with mastic

Trunk to duct connections are properly insulated and have been sealed with mastic
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Twisting and compressing flex duct will block air flow

Twisting and compressing flex duct will block air flow
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Two pieces of flex duct are spliced together with a metal sleeve, nylon draw bands, mastic, metal tape, and more mastic

Two pieces of flex duct are spliced together with a metal sleeve, nylon draw bands, mastic, metal tape, and more mastic
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Uninsulated, unsealed, or missing rim joists allow attic air and heat into the floor cavity

Uninsulated, unsealed, or missing rim joists allow attic air and heat into the floor cavity
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United Way built this affordable home in the mixed-humid climate in Deer Park, NY, and certified it to DOE Zero energy Ready Home specifications in 2016.

United Way built this affordable home in the mixed-humid climate in Deer Park, NY, and certified it to DOE Zero energy Ready Home specifications in 2016.
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United Way of Long Island built this affordable home in the mixed-humid climate in Coram, NY, and certified it to DOE Zero Energy Ready Home specifications in 2018.

United Way of Long Island built this affordable home in the mixed-humid climate in Coram, NY, and certified it to DOE Zero Energy Ready Home specifications in 2018.
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United Way of Long Island built this affordable home in the mixed-humid climate in Deer Park, NY, and certified it to DOE Zero Energy Ready Home specifications in 2015.

United Way of Long Island built this affordable home in the mixed-humid climate in Deer Park, NY, and certified it to DOE Zero Energy Ready Home specifications in 2015.