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There is 6 mil. polyethylene sheeting installed and sealed in the crawlspace

There is 6 mil. polyethylene sheeting installed and sealed in the crawlspace
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There is no polyethylene sheeting installed between the ground and the slab

There is no polyethylene sheeting installed between the ground and the slab
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There is no polyethylene sheeting installed in the crawlspace

There is no polyethylene sheeting installed in the crawlspace
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There is no polyethylene sheeting installed in the crawlspace

There is no polyethylene sheeting installed in the crawlspace
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There is polyethylene sheeting installed to provide a capillary break between the ground and slab

There is polyethylene sheeting installed to provide a capillary break between the ground and slab
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Thermometer used to measure dry-bulb temperature

Thermometer used to measure dry-bulb temperature
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Thermostatic radiator valve operation

Thermostatic radiator valve operation
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Thermostatic radiator valve schematic

Thermostatic radiator valve schematic
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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 plots compare sizing approaches in terms of the approximate annual heating load a heat pump might carry throughout the year for a hypothetical home in Minneapolis, MN.

These plots compare sizing approaches in terms of the approximate annual heating load a heat pump might carry throughout the year for a hypothetical home in Minneapolis, MN.
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These trees were planted between the sidewalk and the street, providing shade to homes, pedestrians, parked cars, and the street.

These trees were planted between the sidewalk and the street, providing shade to homes, pedestrians, parked cars, and the street.
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These wildfire-resistant decks have a solid decking surface, metal railings, and the underside timber supports are covered with flame-resistant fiber cement board; also the decking is set back from the vegetated slope.

These wildfire-resistant decks have a solid decking surface, metal railings, and the underside timber supports are covered with flame-resistant fiber cement board; also the decking is set back from the vegetated slope.
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This “high static ducted cassette” heat pump system is similar to a traditional centrally ducted system, serving several areas of a home from one indoor unit

This “high static ducted cassette” heat pump system is similar to a traditional centrally ducted system, serving several areas of a home from one indoor unit
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This above-ground private fire suppression cistern has a hydrant threaded for easy attachment to local fire department hoses.

This above-ground private fire suppression cistern has a hydrant threaded for easy attachment to local fire department hoses.
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This direct-vent condensing gas furnace has a fresh air intake.

This direct-vent condensing gas furnace has a fresh air intake.
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This dry hydrant was installed by a homeowner living in a rural location to provide firefighters with easy access to this natural water source located on their property.

This dry hydrant was installed by a homeowner living in a rural location to provide firefighters with easy access to this natural water source located on their property.
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This ducted mini-split heat pump was installed in the unvented, conditioned attic and ducted with short duct runs to several nearby rooms.

This ducted mini-split heat pump was installed in the unvented, conditioned attic and ducted with short duct runs to several nearby rooms.
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This ductless wall-hung indoor unit has supplemental air filters (outlined in red), which only filter a portion of the airflow; most of the air bypasses the supplementary filters and only passes through the standard mesh filters.

This ductless wall-hung indoor unit has supplemental air filters (outlined in red), which only filter a portion of the airflow; most of the air bypasses the supplementary filters and only passes through the standard mesh filters.
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This home has defensible space around it, with a vegetation-free zone that helped the house survive a surrounding wildfire.

This home has defensible space around it, with a vegetation-free zone that helped the house survive a surrounding wildfire.
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This home survived the Laguna Beach fire of October 1993, which claimed more than 400 neighboring homes, thanks to a fire-resistant tile roof, stucco exterior, stucco-covered boxed eaves and under-decks, double-pane windows and selective landscaping

This home survived the Laguna Beach fire of October 1993, which claimed more than 400 neighboring homes, thanks to a fire-resistant tile roof, stucco exterior, stucco-covered boxed eaves and under-decks, double-pane windows and selective landscaping
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This home was incorrectly sited and supported too near a slope consisting of unstable soils.

This home was incorrectly sited and supported too near a slope consisting of unstable soils.
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This home’s domestic hot water is provided by three systems: solar water heating panels, a heat pump water heater, and an air-to-water heat pump, which also provides hot water to a fan coil.

This home’s domestic hot water is provided by three systems: solar water heating panels, a heat pump water heater, and an air-to-water heat pump, which also provides hot water to a fan coil.
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This home’s ultra-efficient ground-source heat pump provides hot water for space heating as well as domestic hot water for the 50-gallon storage tank.

This home’s ultra-efficient ground-source heat pump provides hot water for space heating as well as domestic hot water for the 50-gallon storage tank.
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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