Finding Your Goodman AC Filter: Unit Locations, Replacement Guide & Maintenance Tips

A properly maintained air conditioner starts with knowing where your air filter is located. This comprehensive guide provides detailed instructions for finding the filter location in different Goodman AC units, tips for changing filters, and why regular filter replacement matters. Whether you have a split, packaged, or furnace-connected Goodman system, use this resource to keep your air clean and your unit efficient.

Overview Of Goodman AC Unit Filter Locations

AC Type	Filter Location	Access Method	Replacement Tips
Split System (Central Air + Furnace or Air Handler)	Return air grille or inside/near air handler	Open return grille or air handler panel	Check both spots; label size before removal
Packaged Unit	Behind service panel on exterior of unit	Remove secured panel (tools needed)	Always disconnect power first
Wall/Ceiling-Mounted Return	Behind return grille in home	Unlatch or unscrew grille	Record filter size; replace quarterly

Understanding Why Air Filter Location Matters

Finding the correct filter location on your Goodman AC unit is essential for both performance and air quality. A blocked or improperly placed filter can reduce system efficiency, damage components, and raise your utility bill. Changing the filter at the right spot ensures clean circulation and prolongs the life of your HVAC system.

Types Of Goodman AC Units And Their Filter Locations

Goodman Split System (Furnace or Air Handler)

Most American homes have a split system where the cooling coil is connected to either a furnace or a dedicated air handler. In these systems, the filter is usually found in one of these places:

Inside The Return Duct Grille: Look for a large grille—often on a wall or ceiling. There’s a filter slot inside, sometimes held by clips.
At The Air Handler or Furnace: Located inside (or just outside) the bottom or side panel. You may need to unlatch or unscrew the panel to access the filter slot. The filter may slide vertically or horizontally depending on installation.

Identify the path of airflow—the filter must always sit between the return ducts and the blower/coil cabinet. If you’re unsure, trace the large return duct to where it meets the Goodman unit and check for a designated filter slot.

Goodman Packaged Units

Packaged Goodman AC units combine the blower, coil, and compressor in one exterior cabinet, typically on roofs or slabs. Their filter location is usually:

Behind An Exterior Service Panel: Find a panel labeled “FILTER” or check the user manual. Remove screws, slide out the panel, and reveal the horizontal or vertical filter slot inside the cabinet (close to the return air opening).

Always turn off power to the unit before attempting to remove the panel or handle filters in a packaged system.

Goodman Air Handler Filter Location

The air handler—especially in homes without a furnace—houses its filter at the unit itself, usually in a dedicated slot at the side, bottom, or behind a removable access panel.

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Check for arrows or filter guides on the side or bottom of the cabinet.
Filters may be accessed via sliding trays or direct insertion for easier replacement.

Step-By-Step Guide To Locating Your Goodman AC Filter

Identify Your AC Type:
- Is your Goodman system split (indoor coil + outdoor condenser, with a furnace or handler) or packaged (all-in-one exterior box)?
Locate The Return Air Ducts/Grilles:
- On split systems, check large wall or ceiling return grilles first.
- On air handlers/furnaces, inspect panels and sides for filter slots.
Inspect The Equipment:
- Shut off power; open access panels as needed using a screwdriver.
- Look for a filtering device just before the blower fan or coil assembly.
Extract And Note The Filter:
- Check filter size, airflow arrow (must point toward the air handler coil or furnace blower), and note the filter’s thickness and style.

Common Locations In Goodman Systems (With Diagrams & Examples)

Refer to the following diagram for typical filter placements:

System Component	Filter Location	Notes
Return Grille (Wall/Ceiling)	Behind grille, in hallway or main room	Accessible without tools, check for latches
Air Handler/Furnace Cabinet	Side, bottom, or inside cabinet	Requires panel removal, near blower motor
Packaged Unit	Exterior panel labeled “Filter”	Access from outside, may need screwdriver

Some models have two filters: one at each major return air grille. Always replace all filters simultaneously to protect system performance.

How Often Should You Change Goodman AC Filters?

Most manufacturers recommend replacing filters every 1-3 months. However, your needs may vary if you have pets, allergies, or live in a dusty climate. More frequent replacement improves air quality and efficiency.
Consult your Goodman owner’s manual for unit-specific recommendations, or visit Goodman’s official site for model guides.

How To Replace A Goodman AC Filter

Turn Off The System: Always cut power at the thermostat or breaker.
Remove The Old Filter: Slide out from slot or panel, noting airflow direction (arrow faces blower).
Check The Filter Size: Size is printed on filter frame; write it down for future purchases.
Insert New Filter: Slide in, aligning arrow with airflow toward air handler or furnace.
Restore Power & Test: Replace panels/secures screws, restore power, confirm AC operation.

Pro Tip: Use a washable, reusable filter if compatible with your Goodman model, but clean it monthly. Always follow your manufacturer’s and filter supplier’s recommendations for the best results.

Air Filter FAQs For Goodman AC Units

Can I Use Any Filter Size In My Goodman Unit?

No—using the wrong size can let unfiltered air through or restrict airflow, straining your system. Always match the size and thickness listed inside your filter slot or user manual.

How Do I Know If My Filter Is Dirty?

Hold it up to the light—if you can’t see light through it, it’s time to replace. Increased dust inside, allergy symptoms, or high utility bills can also be signs of a clogged filter.

Where Are Goodman Filter Slots Usually Marked?

Some models have labels near the slot or stamped arrows showing airflow direction. If unsure, check both the return grilles and the air handler/furnace cabinet for filter access.