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The heat pump water heater provides efficient hot water.

The heat pump water heater provides efficient hot water.
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The heat pump water heater’s evaporator fan provides enough air movement for active ventilation of a small room when the exhaust is ducted; intake air enters passively through a wall grille

The heat pump water heater’s evaporator fan provides enough air movement for active ventilation of a small room when the exhaust is ducted; intake air enters passively through a wall grille
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The high-efficiency air-to-air heat pump is set in an overflow pan with an emergency shut off sensor in case the condensate tube were to clog and cause condensate to fill up the pan.

The high-efficiency air-to-air heat pump is set in an overflow pan with an emergency shut off sensor in case the condensate tube were to clog and cause condensate to fill up the pan.
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The high-efficiency mini-split heat pump provides cooling and heating; a drain pipe carries condensate away to a location that meets local code requirements.

The high-efficiency mini-split heat pump provides cooling and heating; a drain pipe carries condensate away to a location that meets local code requirements.
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The installed filter is at least a MERV 6 filter

The installed filter is at least a MERV 6 filter
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The installed filter is not a MERV 6 filter

The installed filter is not a MERV 6 filter
Video:

The Mechanics of a Ground Source Heat Pump

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The MERV rating, particle capture efficiencies, and pressure drops are printed on the side of this 1-inch pleated filter

The MERV rating, particle capture efficiencies, and pressure drops are printed on the side of this 1-inch pleated filter
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The NEEP Cold Climate Air Source Heat Pump List allows users to search, sort, and filter for cold climate heat pumps by brand, model, product type, and ducting configuration; an advanced search provides helpful resources for sizing to the heating load

The NEEP Cold Climate Air Source Heat Pump List allows users to search, sort, and filter for cold climate heat pumps by brand, model, product type, and ducting configuration; an advanced search provides helpful resources for sizing to the heating load
Case Study:

The New American Home 2011 Orlando, Florida

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The small heat pump located on top of the tank on a heat pump water heater extracts heat from the surrounding air to create hot water

The small heat pump located on top of the tank on a heat pump water heater extracts heat from the surrounding air to create hot water
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The ultra-efficient air-to-water heat pump draws heat from the outside air to heat inside room air in winter and domestic hot water year-round.

The ultra-efficient air-to-water heat pump draws heat from the outside air to heat inside room air in winter and domestic hot water year-round.
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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 ultra-efficient ground-source heat pump provides the home with forced-air heating and cooling, and hot water.

The ultra-efficient ground-source heat pump provides the home with forced-air heating and cooling, and hot water.
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The very high efficiency (4.7 COP) ground-source heat pump provides hot water to a tank for radiant floor heat and domestic hot water.

The very high efficiency (4.7 COP) ground-source heat pump provides hot water to a tank for radiant floor heat and domestic hot water.
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There is a filter installed to filter outdoor air

There is a filter installed to filter outdoor air
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There is no filter installed in the HVAC system

There is no filter installed in the HVAC system
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There is no filter installed to filter the outdoor air

There is no filter installed to filter the outdoor air
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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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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 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 cold-climate heat pump can meet >90% of this home’s heating needs, even in Cordova, Alaska.

This cold-climate heat pump can meet >90% of this home’s heating needs, even in Cordova, Alaska
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This cold-climate heat pump provides heat at 77% capacity at 5°F, and 57% of capacity at -5 °F.

This cold-climate heat pump provides heat at 77% capacity at 5°F, and 57% of capacity at -5 °F