Showing results 1 - 50 of 55
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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 comparison of a dirty furnace filter on left and clean filter on right. Dirty filters block airflow and make the furnace or air handler work harder.
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A Corsi-Rosenthal Box is a highly effective DIY air cleaner made of easy to obtain materials such as HVAC filters, a box fan, cardboard, and tape
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After inserting the new filter, replace the filter slot cover to minimize air leakage and heat loss.
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All return air and mechanically supplied outdoor air pass through filter prior to conditioning
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Bioswales or rain gardens filter storm water through vegetation and rock and sand substrate layers.
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Dispose of used filters in the garbage or purchase washable, reusable filters if desired and available for your furnace or air handler.
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Filter access panel includes gasket or comparable sealing mechanism and fits snugly against the exposed edge of filter when closed to prevent bypass
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Filter located and installed so as to facilitate access and regular service by the owner
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Furnace filter resistance varies by surface area; deeper pleats add surface area
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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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Furnace filters that are MERV 6 or higher protect the HVAC equipment and improve indoor air quality
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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 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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Insert the new furnace/air handler filter in the filter slot of the furnace or air handler with the arrow pointed in the direction of air flow.
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Install a filter with a MERV rating of 6 or higher in each ducted mechanical system
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Install the filter media box between the return air plenum and the air handler box
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Leaks at the air filter cover panel can draw in unconditioned or undesirable air
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Locate the fresh air intake away from pollution sources and in an easily accessible location
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Make sure the ground bonding wire is securely fastened to the pump’s bonding lug
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Pool pumps perform many functions in a swimming pool including circulating water through the filtration system and heater, backwashing the filter, operating a chlorinator, providing water for the pool sweeper, etc.
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Remove the plastic wrap, but not the cardboard frame, before installing the furnace/air handler filter in the filter slot or above the return grate; note, the metal wire over the filter fabric can be very sharp.
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Replace HVAC air filters regularly to protect the equipment and maintain system efficiency
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Right - Ducts and heat pump cabinet are properly sealed with mastic, high MERV filter is installed, and duct and refrigerant lines are air sealed at ceiling.
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Right - This water softener filters hard water through a mineral-collecting medium before delivering water to the main plumbing system.
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Right – An HVAC contractor installs a 4-inch-thick MERV 13 filter at the intake grille of this return air vent to prevent dust, allergens, smoke, and viruses from entering the duct system.
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Right – HVAC furnace filter is properly installed in cabinet with gasketed cover to prevent air leakage
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Size the filter box for the appropriate filter, according to ACCA Manual D, taking into account pressure drop across the system.
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The air handler of the air-to-water heat pump is equipped with a very high efficiency air filter and a damper-controlled fresh air intake.
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The airflow direction is labeled on the edge of the filter to ensure it is properly oriented when installed.
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The blower wheel (fan) on this ductless wall-mounted indoor unit has accumulated dust and mold - a common issue for this design.
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The edge of this 1-inch HVAC filter indicates it's dimensions, allowing proper matching of filter to air handler
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The filter access panel on this vertical upflow air handler is located between the return ductwork below and the coils above.
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The furnace filter slot cover should fit tightly to minimize air leakage but it should not be taped or caulked to enable frequent filter replacements.
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The MERV rating, particle capture efficiencies, and pressure drops are printed on the side of this 1-inch pleated filter
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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.
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This new filter is inserted into furnace filter slot on the return side of the furnace with the arrow on the side of the filter frame pointing in the direction of airflow, which is toward the furnace.
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To increase surface area and reduce pressure drop for high MERV filters, the return duct can be constructed to permit the installation of two furnace filters side by side
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Variable-speed pool pumps can cut energy use by 50% to 90% compared to standard single-speed pumps