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The natural draft and induced draft furnace are both Category I appliances that receive combustion air from the combustion appliance zone

The natural draft and induced draft furnace are both Category I appliances that receive combustion air from the combustion appliance zone
Case Study:

The New American Home 2011 Orlando, Florida

Presentation:

The New Normal - Delivering Healthy Air in Every Home We Build

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The operable windows in this house are located at occupant level to provide comfort ventilation.

The operable windows in this house are located at occupant level to provide comfort ventilation.
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The pointed tip of this static pressure probe should point directly upstream into the oncoming airflow

The pointed tip of this static pressure probe should point directly upstream into the oncoming airflow
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The polyethylene ceiling vapor barrier is sealed to form an air barrier around the exhaust fan in this very cold climate location (≥ CZ 6).

The polyethylene ceiling vapor barrier is sealed to form an air barrier around the exhaust fan in this very cold climate location (≥ CZ 6).
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The raised hood at the base of the vent stack on this water heater shows that it is an atmospheric vented gas water heater

The raised hood at the base of the vent stack on this water heater shows that it is an atmospheric vented gas water heater
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The spray foam-insulated attic provides a temperate place for the ERV ducts, which provide filtered fresh air to every room in the house.

The spray foam-insulated attic provides a temperate place for the ERV ducts, which provide filtered fresh air to every room in the house.
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The test fan for this central ERV duct leakage test is connected to the duct system from inside the ERV cabinet

The test fan for this central ERV duct leakage test is connected to the duct system from inside the ERV cabinet
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The test fan for this rooftop duct test is connected to the central exhaust duct via a transition plate at the rooftop curb

The test fan for this rooftop duct test is connected to the central exhaust duct via a transition plate at the rooftop curb
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The trash chute and trash room in a multistory multifamily building are depressurized with exhaust fans to minimize odors.

The trash chute and trash room in a multistory multifamily building are depressurized with exhaust fans to minimize odors.
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The ultra-efficient ground source heat pump (COP 4.4) delivers conditioned air throughout the home via ducts; an ERV provides fresh air to the system.

The ultra-efficient ground source heat pump (COP 4.4) delivers conditioned air throughout the home via ducts; an ERV provides fresh air to the system.
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The unprotected glazing in this door was broken by roof tiles dislodged by wind.

The unprotected glazing in this door was broken by roof tiles dislodged by wind.
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The ventilation control is clearly labeled by the installer

The ventilation control is clearly labeled by the installer
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The ventilation controller is next to the thermostat and has a manual override button

The ventilation controller is next to the thermostat and has a manual override button
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The vinyl weatherstripping along the side of this garage door has been badly weathered and needs to be replaced.

The vinyl weatherstripping along the side of this garage door has been badly weathered and needs to be replaced.
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These ERV/HRV configurations are NOT recommended because outdoor air can be sucked back into the ERV/HRV before being distributed to the living space

These ERV/HRV configurations are NOT recommended because outdoor air can be sucked back into the ERV/HRV before being distributed to the living space
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These second-story ventilation air intake/exhaust grilles can be accessed from the lower roof for air-flow testing

These second-story ventilation air intake/exhaust grilles can be accessed from the lower roof for air-flow testing
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This air filter is too big for the air filter slot; the filter should not be installed diagonally; it should lay flat against the opening.

This air filter is too big for the air filter slot; the filter should not be installed diagonally; it should lay flat against the opening.
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This air handler is located within the homes conditioned space in a closet on the main floor of the home (Source: Tommy Williams Homes).

This air handler is located within the homes conditioned space in a closet on the main floor of the home (Source: Tommy Williams Homes).
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This air handling unit provides outside air at the same rate as the air being exhausted from the bathroom exhaust fan; local kitchen exhaust is provided by a range hood with a dedicated makeup air intake and dehumidification is provided by a separate unit

This air handling unit provides outside air at the same rate as the air being exhausted from the bathroom exhaust fan; local kitchen exhaust is provided by a range hood with a dedicated makeup air intake and dehumidification is provided by a separate unit
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This bath exhaust fan ventilation control can be set by the HVAC technician for continuous operation, delayed shut off, or a set amount of minutes each hour

This bath exhaust fan ventilation control can be set by the HVAC technician for continuous operation, delayed shut off, or a set amount of minutes each hour
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This bottom seal on this garage door looks fairly tight, except in the right corner where there is 4-inch gap.

This bottom seal on this garage door looks fairly tight, except in the right corner where there is 4-inch gap.
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This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow

This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow