The homeowner changing the filter will need to un-tape and loosen the blocking cord. The air filter itself will slide directly out - or rather it would if some dope hadn't taped the electrostatic air cleaner power cord to the condensate drain so tightly that it will block air filter removal. If you click-on and enlarge the image you may see a black bolt or screw at the top of the air filter slot cover - remove this to lift the filter slot cover up and out. Look for a filter slot right where the return plenum contacts the blower fan assembly - marked as AIR FILTER SLOT and yellow arrow in my photo. The return air plenum on an attic or basement air conditioner blower unit will usually be a large metal enclosure about the same dimensions in width and height as the air conditioner blower unit itself. The slot may be just an inch or so wide if 1" thick filters are used, or it could be several inches wide if a wide high-capacity pleated or similar filter was used. At an attic air handler look for a slot which has a removable cover.Unfortunately that means that the return ducts themselves become more soiled with dust and debris from the building. If there are more than two, chances are the filter was placed at the air handler instead of at these grilles. There may be several central return points, depending on the design of your system. At the central air return register, grille located in a ceiling or wall if your system uses centralized air returns instead of individual room-air return ducts.In a two-story home the contractor often locates this return centrally near the top of a stairwell. Photo: a ceiling return air inlet for an air conditioning system in a U.S. If you can't find your air conditioner system filters (there may be more than one air filter) here are some places to look.Īfter reviewing this list of air filter locations, if you still cannot find your heating or air conditioning system air filter read our detailed instructions on how to find air filters which follows just after this list. AIR FILTER LOCATION - How to Find the Air Conditioning Filter on Air Conditioners or Hot Air Heating Systems We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. Before assuming that your HVAC system does not have an air filter installed, or that it has only one air filter installed, check the locations we describe here. Knowing where air filters are typically located can help find dirty or clogged air filters that are increasing air conditioning or heating cost. This article explains in detail how to find the air filters on an air conditioning or hot air heating system. Where air filters are installed on air conditioning or heating systems: We have no relationship with advertisers, products, or services discussed at this website. InspectAPedia tolerates no conflicts of interest.
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