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The solar tube installed in the ceiling of this bathroom brings natural light into an interior room that doesn’t have window access.

The solar tube installed in the ceiling of this bathroom brings natural light into an interior room that doesn’t have window access.
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The third-party energy ratings required for certification to programs like the DOE Zero Energy Ready Home Program and EPA's Energy Star program can provide homeowners with assurance of objective verification of energy efficiency claims.

The third-party energy ratings required for certification to programs like the DOE Zero Energy Ready Home Program and EPA's Energy Star program can provide homeowners with assurance of objective verification of energy efficiency claims.
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The varied roof pitches offer multiple options for solar panel placement regardless of home orientation for these production homes in Colorado.

The varied roof pitches offer multiple options for solar panel placement regardless of home orientation for these production homes in Colorado.
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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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These apartments built by Haynes Construction in Meriden, Connecticut, achieved certification to both the U.S. Department of Energy’s Zero Energy Ready Home Program and the Passive House Institute U.S. and were funded as affordable housing.

These apartments built by Haynes Construction in Meriden, Connecticut, achieved certification to both the U.S. Department of Energy’s Zero Energy Ready Home Program and the Passive House Institute U.S. and were funded as affordable housing.
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These townhomes built by Haynes Construction in Meriden, Connecticut, achieved certification to both the U.S. Department of Energy’s Zero Energy Ready Home Program and the Passive House Institute U.S. and were funded as affordable housing.

These townhomes built by Haynes Construction in Meriden, Connecticut, achieved certification to both the U.S. Department of Energy’s Zero Energy Ready Home Program and the Passive House Institute U.S. and were funded as affordable housing.
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This 3,600-ft2 home built by Weiss Building & Development, in River Forest, Illinois, is a certified U.S. Department of Energy (DOE) Zero Energy Ready Home and meets Passive House Institute U.S. requirements.

This 3,600-ft2 home built by Weiss Building & Development, in River Forest, Illinois, is a certified U.S. Department of Energy (DOE) Zero Energy Ready Home and meets Passive House Institute U.S. requirements.
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This 4,305 ft2 zero energy ready home has almost no electric bills thanks to very high-efficiency construction and a solar electric system.

This 4,305 ft2 zero energy ready home has almost no electric bills thanks to very high-efficiency construction and a solar electric system.
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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 bathroom exhaust fan includes a fan and light

This bathroom exhaust fan includes a fan and light
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This bathroom exhaust fan needs to be cleaned

This bathroom exhaust fan needs to be cleaned
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This bathroom is handicapped accessible with a zero-entry shower and roll-up sinks.

This bathroom is handicapped accessible with a zero-entry shower and roll-up sinks.
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This builder in central Washington state chose durable low-maintenance exterior finishes like metal roofing, and hydrolyzed lime and metal siding.

This builder in central Washington state chose durable low-maintenance exterior finishes like metal roofing, and hydrolyzed lime and metal siding.
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This builder installs spray foam in exterior wall cavities where tubs and showers will be installed to air seal and insulate the exterior wall.

This builder installs spray foam in exterior wall cavities where tubs and showers will be installed to air seal and insulate the exterior wall.
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This DOE Zero Energy Ready Certified home in Connecticut combines traditional design details with high-performance energy efficiency to save more than $2,000 per year in energy costs compared to a minimum-code home.

This DOE Zero Energy Ready Certified home in Connecticut combines traditional design details with high-performance energy efficiency to save more than $2,000 per year in energy costs compared to a minimum-code home.
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This DOE Zero Energy Ready certified home in San Marcos, California has a high-performance building envelope and HVAC equipment plus solar electric panels to meet all of the home’s electric needs over the course of the year.

This DOE Zero Energy Ready certified home in San Marcos, California has a high-performance building envelope and HVAC equipment plus solar electric panels to meet all of the home’s electric needs over the course of the year.
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This highly efficient 1,290-ft2 home by Habitat for Humanity of South Sarasota County, Florida, is built to the requirements of the U.S. Department of Energy (DOE) Zero Energy Ready Home program and has low utility bills of about $72 per month.

This highly efficient 1,290-ft2 home by Habitat for Humanity of South Sarasota County, Florida, is built to the requirements of the U.S. Department of Energy (DOE) Zero Energy Ready Home program and has low utility bills of about $72 per month.
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This home is piped with an insulated hot water recirculation loop that speeds hot water to each fixture while helping to reduce water waste.

This home is piped with an insulated hot water recirculation loop that speeds hot water to each fixture while helping to reduce water waste.
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This HRV, installed in a conditioned attic, provides balanced ventilation to the whole home

This HRV, installed in a conditioned attic, provides balanced ventilation to the whole home
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This is the ceiling vent for a basic bathroom exhaust fan

This is the ceiling vent for a basic bathroom exhaust fan
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This narrow bottle brush was an effective tool for removing the debris between the blades of this bathroom exhaust fan

This narrow bottle brush was an effective tool for removing the debris between the blades of this bathroom exhaust fan
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This production home was built to the high-performance criteria of the U.S. Department of Energy’s Zero Energy Ready Home program.

This production home was built to the high-performance criteria of the U.S. Department of Energy’s Zero Energy Ready Home program.