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Case Study:

DOE ZERH HIA 2015 Case Study: United Way of Long Island Housing Development Corporation, Patchogue, NY

Case Study:

DOE ZERH HIA 2017 Case Study: Thrive Home Builders, Courtyard Rows, Lone Tree, CO

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Duct pressure is checked at key locations such as individual bath exhaust registers to ensure there is even pressure distribution in a duct system during a duct leakage test

Duct pressure is checked at key locations such as individual bath exhaust registers to ensure there is even pressure distribution in a duct system during a duct leakage test
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Duct pressure is checked at terminal registers to ensure there is even pressure distribution in a duct system during a duct leakage test

Duct pressure is checked at terminal registers to ensure there is even pressure distribution in a duct system during a duct leakage test
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Ducted whole-house fans should be installed with the duct curved and the fan suspended from rafters to reduce noise and vibration transmission to the living area.

Ducted whole-house fans should be installed with the duct curved and the fan suspended from rafters to reduce noise and vibration transmission to the living area.
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Each unit in a multifamily building should have its own supply and exhaust ventilation

Each unit in a multifamily building should have its own supply and exhaust ventilation
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Earth tubes buried in the ground can provide pre-cooling of ventilation air or primary cooling if designed deep and long enough

Earth tubes buried in the ground can provide pre-cooling of ventilation air or primary cooling if designed deep and long enough
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ECM Motor and Control

ECM Motor and Control
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ECM Motor Retrofit

ECM Motor Retrofit
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ENERGY STAR climate zone map for windows

ENERGY STAR climate zone map for windows
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Ensure that attached garages in multifamily buildings are well-ventilated to reduce the presence of airborne contaminants in the garage and occupied space

Ensure that attached garages in multifamily buildings are well-ventilated to reduce the presence of airborne contaminants in the garage and occupied space
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Evaporative Cooler Sizing in ACH based on wet-bulb temperatures at 1% summer design conditions

Evaporative Cooler Sizing in ACH based on wet-bulb temperatures at 1% summer design conditions
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Even when wind is blowing parallel to a wall, an open casement window can create a zone of higher pressure near the window opening, driving airflow into the house

Even when wind is blowing parallel to a wall, an open casement window can create a zone of higher pressure near the window opening, driving airflow into the house
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Example calculation of the leakage allowance for a duct leakage test at final for a ventilation system in a multifamily building

Example calculation of the leakage allowance for a duct leakage test at final for a ventilation system in a multifamily building
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Example calculation of the leakage allowance for a duct leakage test at rough-in for a ventilation system in a multifamily building

Example calculation of the leakage allowance for a duct leakage test at rough-in for a ventilation system in a multifamily building
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Example calculations for converting measured leakage airflow and leakage allowance when measured at a pressure other than the design or operating pressure

Example calculations for converting measured leakage airflow and leakage allowance when measured at a pressure other than the design or operating pressure
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Example calculations for converting total airflow and leakage allowance when measured at 50 Pa instead of the design or operating pressure

Example calculations for converting total airflow and leakage allowance when measured at 50 Pa instead of the design or operating pressure
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Example calculations for leakage allowance when testing only a portion of the ducts in a central exhaust system

Example calculations for leakage allowance when testing only a portion of the ducts in a central exhaust system
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Example design airflow data for a ventilation system in a multifamily building

Example design airflow data for a ventilation system in a multifamily building
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Example design airflow data for the supply and exhaust registers of a ventilation system in a multifamily building

Example design airflow data for the supply and exhaust registers of a ventilation system in a multifamily building
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Example duct length calculations for a multifamily central exhaust system

Example duct length calculations for a multifamily central exhaust system
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Example of an HVAC air filter slot with a latch cover door.

Example of an HVAC air filter slot with a latch cover door.
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Example of an HVAC air filter slot with a sliding cover door.

Example of an HVAC air filter slot with a sliding cover door.
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Example standalone dehumidifier option in a 1-story home closet

Example standalone dehumidifier option in a 1-story home closet