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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 central heat pump water heating system with a hot water circulation loop that returns to the primary storage tank relies on a multi pass heat pump to provide both primary DHW heating and hot water circulation temperature maintenance

This central heat pump water heating system with a hot water circulation loop that returns to the primary storage tank relies on a multi pass heat pump to provide both primary DHW heating and hot water circulation temperature maintenance
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This central heat pump water heating system with a hot water circulation loop that returns to the primary storage tank relies on a single pass heat pump to provide both primary DHW heating and hot water circulation temperature maintenance

This central heat pump water heating system with a hot water circulation loop that returns to the primary storage tank relies on a single pass heat pump to provide both primary DHW heating and hot water circulation temperature maintenance
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This fully packaged/skid-mounted central heat pump water heating system was shipped to the building on a truck and craned into location

This fully packaged/skid-mounted central heat pump water heating system was shipped to the building on a truck and craned into location
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This fully specified central heat pump water heating system has four individual outdoor heat pump units plumbed in parallel to indoor storage tanks

This fully specified central heat pump water heating system has four individual outdoor heat pump units plumbed in parallel to indoor storage tanks
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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 mechanical room contains both the storage tanks (right) and heat pumps (left) of a central heat pump water heating system

This mechanical room contains both the storage tanks (right) and heat pumps (left) of a central heat pump water heating system
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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 packaged central heat pump water heating system has the heat pumps on the exterior of the blue enclosure, and the storage tanks, temperature maintenance equipment, mixing valve, and control modules on the inside

This packaged central heat pump water heating system has the heat pumps on the exterior of the blue enclosure, and the storage tanks, temperature maintenance equipment, mixing valve, and control modules on the inside
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This retrofit central heat pump water heater system utilizes the existing water heater as a swing tank to provide temperature maintenance for the hot water circulation loop

This retrofit central heat pump water heater system utilizes the existing water heater as a swing tank to provide temperature maintenance for the hot water circulation loop
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This wall and window assembly has excessive framing around the windows, which can lead to heat gain in how climate zones.

This wall and window assembly has excessive framing around the windows, which can lead to heat gain in how climate zones.
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This wood-framed wall is connected with framing anchors, metal strapping and ties, and anchor bolts to secure the roof to the walls and walls to the foundation

This wood-framed wall is connected with framing anchors, metal strapping and ties, and anchor bolts to secure the roof to the walls and walls to the foundation
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Thornhill Custom Homes built this custom spec home in the hot-humid climate in Dallas, TX, and certified it to DOE Zero Energy Ready Home specifications in 2017.

Thornhill Custom Homes built this custom spec home in the hot-humid climate in Dallas, TX, and certified it to DOE Zero Energy Ready Home specifications in 2017.
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Three inches of closed-cell spray foam (R-19) and 7.5 inches (R-28) of open-cell spray foam was installed below the roof sheathing in this cathedral ceiling.

Three inches of closed-cell spray foam (R-19) and 7.5 inches (R-28) of open-cell spray foam was installed below the roof sheathing in this cathedral ceiling.
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Thrive Home Builder built this affordable home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2018.

Thrive Home Builder built this affordable home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2018.
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Thrive Home Builders built this multi-family home in the cold climate in Wheat Ridge, CO, and certified it to DOE Zero Energy Ready Home specifications in 2020.

Thrive Home Builders built this multi-family home in the cold climate in Wheat Ridge, CO, and certified it to DOE Zero Energy Ready Home specifications in 2020.
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Thrive Home Builders built this multifamily home in the cold climate in Lone Tree, CO, and certified it to DOE Zero Energy Ready Home specifications in 2017.

Thrive Home Builders built this multifamily home in the cold climate in Lone Tree, CO, and certified it to DOE Zero Energy Ready Home specifications in 2017.
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Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2019.

Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2019.
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Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2017.

Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2017.
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Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2016.

Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2016.
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Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2019.

Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2019.
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Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2018.

Thrive Home Builders built this production home in the cold climate in Denver, CO, and certified it to DOE Zero Energy Ready Home specifications in 2018.
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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.