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Image:

Flood walls can be built around a water heater to protect it from flood waters

Flood walls can be built around a water heater to protect it from flood waters
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Floorplan of a heat pump water heater located in a closet in an exterior corridor or breezeway rather than within the thermal envelope of a multifamily dwelling unit

Floorplan of a heat pump water heater located in a closet in an exterior corridor or breezeway rather than within the thermal envelope of a multifamily dwelling unit
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Floorplan of a heat pump water heater located in a closet in an interior corridor rather than within the thermal envelope of a multifamily dwelling unit

Floorplan of a heat pump water heater located in a closet in an interior corridor rather than within the thermal envelope of a multifamily dwelling unit
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Floorplan of a heat pump water heater located in an interior closet with active (ducted) ventilation

Floorplan of a heat pump water heater located in an interior closet with active (ducted) ventilation
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Floorplan of a heat pump water heater located in an interior closet with passive ventilation

Floorplan of a heat pump water heater located in an interior closet with passive ventilation
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Floorplan of a hypothetical multifamily building showing corridors and stairwells

Floorplan of a hypothetical multifamily building showing corridors and stairwells
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Floorplan of a hypothetical multifamily building with hot water First Hour Rating (FHR) requirements (in gallons) noted for each dwelling unit

Floorplan of a hypothetical multifamily building with hot water First Hour Rating (FHR) requirements (in gallons) noted for each dwelling unit
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Floorplan of heat pump water heater located in an exterior closet with transfer grilles in the exterior wall or a louvered door to allow ventilation

Floorplan of heat pump water heater located in an exterior closet with transfer grilles in the exterior wall or a louvered door to allow ventilation
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Floorplan showing a basement location for a heat pump water heater

Floorplan showing a basement location for a heat pump water heater
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Floorplan showing a garage location for a heat pump water heater

Floorplan showing a garage location for a heat pump water heater
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Floorplan showing a laundry room location for a heat pump water heater

Floorplan showing a laundry room location for a heat pump water heater
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Good water management practices like sloping grade away from house, and installing gutters, perimeter drain pipe, a capillary break, and free-draining soils or drainage mat protect the foundation from water saturation.

Good water management practices like sloping grade away from house, and installing gutters, perimeter drain pipe, a capillary break, and free-draining soils or drainage mat protect the foundation from water saturation.
Case Study:

GreenCraft Builders 2009 TimberCreek Net Zero Energy House Prototype

Case Study:

GreenCraft Greenspoint House Prototype

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Gutters and downspouts direct rainwater down and away from buildings to keep building walls and foundations drier

Gutters and downspouts direct rainwater down and away from buildings to keep building walls and foundations drier
Case Study:

Habitat for Humanity Cold Climate High R-Value Prototype, Westford, Massachusetts

Case Study:

Habitat for Humanity High R-Value Prototype

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Heat pump water heater condensate can be addressed through factory fittings (left) or after market fittings (center), and then routing the condensate to a drain.

Heat pump water heater condensate can be addressed through factory fittings (left) or after market fittings (center), and then routing the condensate to a drain.
Image:

Heat pump water heater is installed in the interior closet of a multifamily dwelling unit

Heat pump water heater is installed in the interior closet of a multifamily dwelling unit
Video:

Heat Pump Water Heaters - Energy Star Homes

Video:

Heat Pump Water Heaters (1)

Presentation:

Heat Pump Water Heaters are a Builder's Best Friend

Heat Pump Water Heaters are a Builder's Best Friend
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Heat pump water heaters should be seismically braced around the tank portion and not the water heater portion (left) but padding is okay if close to a wall (right).

Heat pump water heaters should be seismically braced around the tank portion and not the water heater portion (left) but padding is okay if close to a wall (right).
Case Study:

Heat Pump Water Heating System: Jackson Apartments, Seattle WA