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This new filter is inserted into furnace filter slot on the return side of the furnace with the arrow on the side of the filter frame pointing in the direction of airflow, which is toward the furnace.

This new filter is inserted into furnace filter slot on the return side of the furnace with the arrow on the side of the filter frame pointing in the direction of airflow, which is toward the furnace.
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This overhang for a south-facing window provides full shade in the summer and full sun in the winter, optimizing savings in both cooling and heating energy (results shown for 2pm in both summer and winter, 36N latitude).

This overhang for a south-facing window provides full shade in the summer and full sun in the winter, optimizing savings in both cooling and heating energy (results shown for 2pm in both summer and winter, 36N latitude).
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This plan view of a multifamily building shows how a leaky central exhaust system can create negative pressure zones, pulling unconditioned outside air or humid inside air into the service shaft and wall cavities

This plan view of a multifamily building shows how a leaky central exhaust system can create negative pressure zones, pulling unconditioned outside air or humid inside air into the service shaft and wall cavities
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This shared parking garage in a multistory multifamily building is open to the exterior, allowing for natural air changes to control airborne contaminant concentration.

This shared parking garage in a multistory multifamily building is open to the exterior, allowing for natural air changes to control airborne contaminant concentration.
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This simple decision tree can help homeowners and contractors determine options about wall and window upgrades when re-siding a home

This simple decision tree can help homeowners and contractors determine options about wall and window upgrades when re-siding a home
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This simple decision tree can help homeowners and contractors make decisions about re-siding a home and upgrading windows

This simple decision tree can help homeowners and contractors make decisions about re-siding a home and upgrading windows
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This simple decision tree can help homeowners and contractors make decisions about wall and window upgrades when re-siding a home

This simple decision tree can help homeowners and contractors make decisions about wall and window upgrades when re-siding a home
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This thermal image of an interior storm window shows how much temperature change occurs between the interior storm window panel on the right, at 50F and the existing glass on left at approximately 0F

This thermal image of an interior storm window shows how much temperature change occurs between the interior storm window panel on the right, at 50F and the existing glass on left at approximately 0F
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This window header has been insulated with rigid foam and air sealed with house wrap tape and all wood-to-wood joints are caulked.

This window header has been insulated with rigid foam and air sealed with house wrap tape and all wood-to-wood joints are caulked.
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This window is properly flashed, with pan flashing, then side (jamb) flashing over the window flanges, flashing across the top, and then the house wrap flap folded down before head flashing is added.

This window is properly flashed, with pan flashing, then side (jamb) flashing over the window flanges, flashing across the top, and then the house wrap flap folded down before head flashing is added.
Presentation:

Three’s A Crowd: Energy Efficiency, Humidity and Ventilation in Humid Climate Zones

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Time series of concentrations of particles measured by ten different devices in the same location, demonstrating a failure to quickly and properly return to baseline after a high concentration event.

Time series of concentrations of particles measured by ten different devices in the same location, demonstrating a failure to quickly and properly return to baseline after a high concentration event.
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To get an average whole-wall R value of R-19 with double-pane windows, you’d need R-330 of wall insulation; triple-pane windows can achieve an R-19 total wall R Value with R-38 of insulation

To get an average whole-wall R value of R-19 with double-pane windows, you’d need R-330 of wall insulation; triple-pane windows can achieve an R-19 total wall R Value with R-38 of insulation
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To test bathroom exhaust fan airflow, hold a tissue up to the fan while it is running; if it holds, airflow is good.

To test bathroom exhaust fan airflow, hold a tissue up to the fan while it is running; if it holds, airflow is good.
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To test house-to-garage airtightness, after connecting the green tubing as shown, connect the red tubing as follows: connect the input tap on channel “A” of the two-channel manometer (2CM) to the reference tap on channel “B” of the 2CM

To test house-to-garage airtightness, after connecting the green tubing as shown, connect the red tubing as follows: connect the input tap on channel “A” of the two-channel manometer (2CM) to the reference tap on channel “B” of the 2CM
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To test house-to-garage airtightness, first set up the blower door kit with the smart manometer in the blower door

To test house-to-garage airtightness, first set up the blower door kit with the smart manometer in the blower door
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Traditional and advanced framing of windows and doors

Traditional and advanced framing of windows and doors
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Transfer Grilles (1)

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Triple-pane windows are highly insulating (U=0.18) to slow heat transfer while letting in plenty of sunlight.

Triple-pane windows are highly insulating (U=0.18) to slow heat transfer while letting in plenty of sunlight.
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Triple-Pane windows can be used as a tradeoff for continuous wall insulation or stricter air sealing targets when showing compliance with the 2021 IECC using the UA path

Triple-Pane windows can be used as a tradeoff for continuous wall insulation or stricter air sealing targets when showing compliance with the 2021 IECC using the UA path
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Triple-pane windows use three panes of glass separated by gaps filled with krypton or argon gas, insulated spacers, and low-emissivity coatings to achieve high insulation performance

Triple-pane windows use three panes of glass separated by gaps filled with krypton or argon gas, insulated spacers, and low-emissivity coatings to achieve high insulation performance
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Two manometers are used when pressure testing the airtightness of the walls separating the house from an attached garage

Two manometers are used when pressure testing the airtightness of the walls separating the house from an attached garage
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Types of window attachments include exterior attachments such as storm windows, fixed awnings, dynamic awnings, roller shutters, roller shades, and solar screens, and interior attachments such as drapes, louvered blinds, roller shades, surface applied fil

Types of window attachments include exterior attachments such as storm windows, fixed awnings, dynamic awnings, roller shutters, roller shades, and solar screens, and interior attachments such as drapes, louvered blinds, roller shades, surface applied films, cellular shades, and window quilts.
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Typically, you will remove the glass panels from the frame before installation; check the manufacturer’s instructions.

Typically, you will remove the glass panels from the frame before installation; check the manufacturer’s instructions.