Showing results 1 - 50 of 59
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A blower door is installed in a doorway and is ready for testing
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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 flow grid is inserted into the filter grille/slot to directly measure airflow.
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A home is tested at two points for enclosure air leakage
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A manometer is used to measure pressure differentials between indoors and outdoors when testing whole-house air leakage.
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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 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 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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An energy rater uses a duct blower to test HVAC duct air leakage.
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An infrared camera can show heat transfer and air leaks not visible to the naked eye.
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An IR camera image shows gaps around HVAC flue pipes allow conditioned air to leak through blown fiberglass into the attic
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Builders use an infrared camera to “see” heat flow and air leakage around a window during construction.
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Calibrated blower door fans are used for envelope leakage testing
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Equipment needed to pressure test the airtightness of walls separating the house from an attached garage
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Floor cavity air pressure is measured by placing a tube into the floor cavity through a small drilled hole
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Floor cavity pressure is measured by inserting a tube into the floor cavity using an extension pole
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Gas sensors are used for gas leak detection and carbon monoxide detection
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Infrared imaging shows cold conditioned air pouring out of the open floor cavities under this attic kneewall into the hot unconditioned attic
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Infrared thermography during depressurization testing reveals air leakage at corner of spray foam-insulated room where wood-to-wood seams in framing were not air sealed
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Install a self-closing door with weatherstripping and thoroughly air-seal the shared house-garage walls to help keep automobile exhaust and other pollutants out of the home.
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Installing a garage exhaust fan is one important step in keeping auto exhaust and other pollutants out of the home
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Limited attic access can make inspections for missing air barriers and insulation challenging
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Limited attic access may make it necessary to use a bore scope when inspecting for missing air barriers and insulation in existing buildings.
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Moisture levels are checked in the blown cellulose insulation before enclosing the walls.
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Pressure manometers are used to determine the level of pressurization and rate of leakage when conducting blower door testing and building diagnostics
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Right - Manometers are placed away from the indoor side of the fan during blower door testing
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Right - This air flow testing station includes a manometer to determine air flow rate for a whole house ventilation system.
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Right – An infrared image of this home shows very little heat transfer through the exterior walls.
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Right – The blower door is installed snugly and securely to the door frame during testing
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Right – The blower door pressure reference hose is placed well away from the outdoor side of the fan
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Right – The energy rater used a window to test whole-house air leakage with this blower door testing equipment.
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Right – This IR image shows very little heat loss through the home’s exterior walls.
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Right-- IR photo shows how effectively spray foam insulated/air sealed attic kneewall and the floor cavities under kneewall
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Smoke generators are used to identify air leakage sites during depressurization testing
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The air tightness of the garage-to-house air barrier can be tested with a blower door kit and two manometers
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The air tightness of the house-garage air barrier can be tested using a CFM50 test that is first run with the garage door to outdoors closed
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The air tightness of the house-garage air barrier can be tested using a CFM50 test that is run first with the garage door to outdoors closed and then with the overhead garage door to outdoors open
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The moisture level of the cellulose wall insulation is tested with a moisture meter to verify that the insulation is sufficiently dry before installing drywall.
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The moisture level of the wall studs is tested with a moisture meter to verify that the wood is sufficiently dry before installing drywall.
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These ICF homes are blower door tested during construction, before the drywall is installed, when air leaks can be easily sealed.
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To prepare for a total duct test at final, cover all of the supply outlets and return inlets
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To prepare for a total duct test at rough-in, cover all of the supply outlets and return inlets