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This depiction of a saddle installed window heat pump does not obstruct window use and provides fairly quiet 120 Volt operation

This depiction of a saddle installed window heat pump does not obstruct window use and provides fairly quiet 120 Volt operation
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This diagram provides a more realistic view of how a typical direct evaporative cooler operates

This diagram provides a more realistic view of how a typical direct evaporative cooler operates
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This dropped soffit runs the length of the house providing a convenient place to locate one trunk duct with several very short side ducts that supply heat and cooling to most rooms of the house.

This dropped soffit runs the length of the house providing a convenient place to locate one trunk duct with several very short side ducts that supply heat and cooling to most rooms of the house.
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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 ducted, wall-mounted range hood exhaust fan replaced a recirculating fan that did not adequately remove kitchen contaminants.

This ducted, wall-mounted range hood exhaust fan replaced a recirculating fan that did not adequately remove kitchen contaminants.
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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 energy recovery ventilator (ERV) provides balanced ventilation to a dwelling unit in a multifamily building

This energy recovery ventilator (ERV) provides balanced ventilation to a dwelling unit in a multifamily building
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This experimental earth tube is 220 ft long, 8 inches in diameter, and is buried 10 feet deep

This experimental earth tube is 220 ft long, 8 inches in diameter, and is buried 10 feet deep
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This experimental radiative/evaporative hybrid cooling system uses water to reject heat at night through radiation and evaporation

This experimental radiative/evaporative hybrid cooling system uses water to reject heat at night through radiation and evaporation
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This flowchart describes which ACCA manuals are needed in each phase of the HVAC design process.

This flowchart describes which ACCA manuals are needed in each phase of the HVAC design process.
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This fresh air intake filter box provides for access to a replaceable filter for air intake duct with a 6-inch collar.

This fresh air intake filter box provides for access to a replaceable filter for air intake duct with a 6-inch collar.
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This furnace filter has become very clogged with dust and needs to be replaced.

This furnace filter has become very clogged with dust and needs to be replaced.
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This heat pump compressor unit is elevated to avoid ground moisture and flooding, but water dripping from the roof above froze on the unit in winter, encasing it in ice.

This heat pump compressor unit is elevated to avoid ground moisture and flooding, but water dripping from the roof above froze on the unit in winter, encasing it in ice.
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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 home uses light-colored standard paints and finishes on siding and roofing materials to reduce cooling loads without adding material cost.

This home uses light-colored standard paints and finishes on siding and roofing materials to reduce cooling loads without adding material cost.
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This home uses traditional adobe as a wall construction material.

This home uses traditional adobe as a wall construction material.
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This home’s balanced fresh air system includes a filtered fresh air intake that is wired to the central HVAC system with timer controls while exhaust fans in the kitchen, bathrooms, and laundry room pull stale and moist air from the home.

This home’s balanced fresh air system includes a filtered fresh air intake that is wired to the central HVAC system with timer controls while exhaust fans in the kitchen, bathrooms, and laundry room pull stale and moist air from the home.
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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 hot climate zone home uses high quality batt insulation between studs to insulate this connecting garage wall.

This hot climate zone home uses high quality batt insulation between studs to insulate this connecting garage wall.
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This hot climate zone home uses high quality batt insulation to insulate truss-joist headers.

This hot climate zone home uses high quality batt insulation to insulate truss-joist headers.
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This house is sited so the existing trees will shade the west-facing walls to minimize summertime heat gain

This house is sited so the existing trees will shade the west-facing walls to minimize summertime heat gain
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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
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This HVAC air filter slot contains a 1-inch-thick filter but the slot is designed to accept either a 1-inch or a 4-inch air filter.

This HVAC air filter slot contains a 1-inch-thick filter but the slot is designed to accept either a 1-inch or a 4-inch air filter.