Showing results 1 - 50 of 578
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Individual ventilation systems for each dwelling unit in a multifamily building will require large numbers of penetrations in exterior facades
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These schematics illustrate temporary deployment locations for probes during the commissioning process; these probes connect to smartphone commissioning applications.
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This central ventilation system uses an energy recovery ventilator to supply air to the corridor and exhaust air from the elevator shaft of a multifamily building
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A 5,000- 6,000 Btu/hr air conditioner drawing about 500 watts can be installed in one window of a designated cool room (it is important that the installation is insulated and well-sealed
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A central fan-integrated supply system uses a fresh air intake ducted to the home's central furnace or air handler unit to supply fresh air throughout the home
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A central rooftop fan supplies outdoor air to all floors of a multistory multifamily building, pressurizing the corridors and providing make-up air for the elevator shaft, which is depressurized by an exhaust fan.
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A central rooftop fan supplies preconditioned outdoor air to every floor of a multistory multifamily building, pressurizing the corridors and providing make-up air for the elevator shaft, which is depressurized by an exhaust fan.
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A constant airflow regulator is a modulating orifice that automatically regulates airflows in duct systems to constant levels
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A constant airflow regulator is fitted into the neck of the supply duct to control air flow to deliver the design airflow regardless of pressure variations
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A cool room should have low enough heat gains to be easily cooled by a small single-zone cooling system such as a mini-split or a window air-conditioner as shown here
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A direct-vent sealed-combustion fireplace takes its combustion air directly from outside through a dedicated air inlet and vents combustion products directly outside
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A direct-vent sealed-combustion furnace has dedicated pipes for combustion air and exhaust
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A duct leakage test is performed on a ducted heat pump system using a duct tester (blower fan) and a digital manometer.
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A ducted central return brings air from central return registers back to the air handler through insulated, air-sealed ducts
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A flow grid is inserted into the filter grille/slot to directly measure airflow.
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A foaming cleaner is used to clean the coils inside this ductless indoor unit; a mini-split bib surrounds the unit to contain overspray and drips
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A foaming sprayer and mini-split bib are required to properly clean this ductless wall-mounted indoor unit
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A fresh air inlet is ducted to the return side of the home’s central air handler; a motorized damper and electronic controls help balance the flow of fresh incoming air with controlled exhaust to meet ventilation requirements
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A ground-source heat pump used a fluid flowing through pipe loops to draw heat from or discharge heat the ground to heat or cool the indoor space.
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A high-efficiency heat pump is installed in a closet within this home’s conditioned space.
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A modern single-inlet direct evaporative cooler draws outside air through an 8- to 12-inch media filter
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A nitrogen pressure test was completed on this ductless mini-split heat pump using a digital manifold gauge.
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A nylon draw band and tensioning tool are used to secure the inner coil of the pre-insulated flexible duct
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A nylon draw band and tensioning tool are used to secure the inner liner of the pre-insulated flexible duct
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A passive air inlet is one approach to providing makeup air when operating an exhaust-only ventilation system
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A passive flow hood is used to measure the flow rate of air that passes through a ceiling-mounted exhaust fan
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A permanent awning prevents snow and overflowing ice dams from causing damage to HVAC equipment below.
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A portable CO monitor is used to test for ambient CO near a ventless combustion fireplace
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A properly sized cold climate heat pump can meet 100% of a home’s heating load in nearly any location in the United States
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A properly sized high-efficiency heat pump is located in conditioned space in a closet inside the home.
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A seismic snubber is a type of bracket specifically designed to anchor heavy equipment to the floor to restrain it in the event of an earthquake.
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A single ductless heat pump heats and cools the country’s first DOE Zero Energy Ready certified manufactured home.
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A static pressure measurement is taken on this air handler using probes on the supply and return sides of the fan.
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A supplemental dehumidifier is integrated with the home’s HVAC air handler to provide extra dehumidification when needed
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A technician assembles the spray sealant injection system to seal HVAC ducts from the inside
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A vacuum decay test is performed on this ductless mini-split heat pump using a digital micron gauge for accurate measurement; a deep vacuum is achieved quickly by using large diameter, vacuum-rated hoses, and removing valve cores
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A ventilation controller with a manual override is located on a central air handler fan that is located in an accessible location
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After securing the inner coil, cover the draw band and the seam with a generous amount of mastic
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Air flow is produced when central HVAC fan is energized (set thermostat to “fan”)
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