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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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The wall hung boiler provides heat for the central air handler as hot water.

The wall hung boiler provides heat for the central air handler as hot water.
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The water heater and other appliances are located above the Base Flood Elevation.

The water heater and other appliances are located above the Base Flood Elevation.
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Thermosiphon solar hot water system

Thermosiphon solar hot water system
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Thermosyphon solar hot water heater (commercial application).

Thermosyphon solar hot water heater (commercial application).
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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 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 Heat Pump changes EVERYTHING | R290 Heat Pump

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This heat pump water heater has been fitted with ducts to exhaust its waste cooling into the occupied living area

This heat pump water heater has been fitted with ducts to exhaust its waste cooling into the occupied living area
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This Heat Pump Water Heater has Pipe insulation installed on the hot water line (on left) and on the cold water line (on right)

This Heat Pump Water Heater has Pipe insulation installed on the hot water line (on left) and on the cold water line (on right)
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This heat pump water heater is centrally located in a laundry room so that all hot water uses are less than 15 feet from the tank.

This heat pump water heater is centrally located in a laundry room so that all hot water uses are less than 15 feet from the tank.
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This Heat Pump Water Heater is Sitting on an Insulation Pad to Reduces Heat Losses

This Heat Pump Water Heater is sitting on an insulation pad to reduces heat losses
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This home bears a DOE Zero Energy Ready Home label on its front window next to the ENERGY STAR window label.

This home bears a DOE Zero Energy Ready Home label on its front window next to the ENERGY STAR window label.
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This home is equipped with an ultra-efficient (COP 5.7) ground source heat pump, which also provides domestic hot water that is stored in a tank.

This home is equipped with an ultra-efficient (COP 5.7) ground source heat pump, which also provides domestic hot water that is stored in a tank.
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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 is the compact outside unit for an ultra-efficient air-to-water heat pump (COP 4.1) that provides space heating and domestic hot water.

This is the compact outside unit for an ultra-efficient air-to-water heat pump (COP 4.1) that provides space heating and domestic hot water.
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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 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