Showing results 51 - 100 of 281
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Duct to boot connection of jump duct not fastened and sealed
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Ducts sagging because supports not installed at regular intervals
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Example of an HVAC installer’s balancing report form
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Expanded polystyrene insulation is installed with joints taped and lath attached in preparation for the application of stucco
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Faced fiberglass batt insulation can be stapled to the stud faces or slightly inset, but avoid compressing the batts
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Fan housing was oriented in the correct direction to allow proper exhaust duct installation
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Flat roof with cavity spray foam plus loose-fill insulation and gypsum board thermal barrier.
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Flexible ducts in unconditioned space not installed in cavities smaller than outer duct diameter; in conditioned space not installed in cavities smaller than inner duct diameter
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Flexible ducts supported at intervals as recommended by mfr. but at a distance ≤ 5 ft
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For factory-made interior removable storm windows, follow the manufacturer’s instructions for measuring the window frame
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Furnace filters come in many sizes; verify the correct size when purchasing for proper fit in the filter slot.
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HVAC ducts, cavities used as ducts, and combustion inlets and outlets may pass perpendicularly through exterior walls but shall not be run within exterior walls unless at least R-6 continuous insulation is provided on exterior side of the cavity
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If a dropped soffit is used to house a duct, the soffit space must equal the duct diameter plus the insulation thickness
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If airflow must be limited to a supply register, use balancing dampers at the trunk line rather than looping duct to control airflow
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If filter is inaccessible, locate the air filter between the return air plenum and the air handler box
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If furnace is accessible, locate the air filter between the return air plenum and the air handler box
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If HVAC duct must be installed in an exterior wall, separate it from the exterior with at least R-6 of continuous rigid insulation
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If the furnace is hard to access, locate filters at return registers covered by hinged grilles that are easy to open from inside the home
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Improperly installed fuel tanks can break free from attachments under the force of flood waters, risking broken fuel lines which could cause fire or explosion. Here, the tank is tethered only by the gas piping, which is not designed to perform this functi
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Inadequate amount of insulation installed with compression, misalignment, and voids
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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