Attic Ac Unit Filter Location

So why put an hvac system up in the attic at all.

Attic ac unit filter location. One is the conditioned supply air that serves the house with warm or cool air attaching to the vents in every room. Well mainly it s a way to save space. An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan. The filter is probably at the air intake not in the furnace blower unit up in the attic.

Typically the unit would be found in a basement an attic or sometimes in the back of a closet. If you don t see a panel on or near the air handler indoor unit that has filter stamped on it then try checking these locations. You say you changed the two in the living areas suggesting that you have a dual zone system 2 floors. The air filter is usually located in the return air duct or blower compartment before the return air reaches the air handler.

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. This allows the filter to clean the air coming from your house before it enters the hvac unit. This air handler has a filter base under the unit. All central heating and cooling systems should have an air filter but the filter can be harder to locate on some hvac units than others.

Attic hvac systems save space. The 2nd duct is the return duct that attaches to the return air vents and draws the stale air out of the house through the filter and conditions it again to return. The air handler is the large metal box containing the fan and fan motor. 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.

Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts. Two large pipes or ducts extend from the package unit. The air filter might be on top below or on the side of the air handler depending on what kind of air handler you have. Sometimes the air filter is behind the bottom front panel of the air handler.