Where is the air filter on a package unit?

Author: Nichole Gutmann  |  Last update: Thursday, August 7, 2025

Most Common Locations HVAC Filters The filter usually fits in a slot on the air return side of the unit. Vertical units: These units are often located in utility closets or crawl spaces. The filter is typically located behind a grille on the bottom or front of the unit.

Do package units have filters?

A commercial package unit usually uses a metal mesh filter to separate the air from pollutants and unwanted particles. A typical PM would include cleaning that filter with a hose.

Is there a filter on my outside AC unit?

Tip: If you're looking to replace your outside AC unit filter, the filter location varies depending on the unit. However, it can usually be found along the air conditioner return duct.

How do I know if my AC has a filter?

All central heating and cooling systems should have an air filter, but some HVAC units make filters harder to locate. The filter is commonly located in a return air grille, within the air handler, or external to the air handler in a filter rack.

Why can't i find my AC filter?

If you can't find an air filter near your HVAC unit, then you may have to look in your return vent. Because HVAC units are often set up in a more difficult to access area, the filters are sometimes placed here for better accessibility.

How to Clean Filters of Package Unit Fully Explained||Video for New Ac Technicians||HVAC Basics

How to clean filter on carrier air conditioner?

Cleaning your air filters in all Carrier Air hi-wall split system products is easy – simply pop the front of your unit off, remove the air filters and brush, shake or vacuum any and all debris out of them*.

Why is AC not blowing cold air?

First, check your filters and coils for dirt and debris that may be impeding airflow. Once you've cleaned the filters and coils, run the air conditioner with just the fan so that the ice accumulation can melt off. If the AC still doesn't blow cold air, it could be that refrigerant levels are too low.

How to service a package AC unit?

How to take care of your packaged system for peak performance
  1. Check ducts, filters, blower, and outdoor coil for dirt and other obstructions.
  2. Check for duct leakage.
  3. Confirm adequate airflow.
  4. Correct refrigerant charge.
  5. Repair any refrigerant leaks.
  6. Check electric terminals.

Do some AC units not have filters?

Every air conditioner requires a filter with a particular Minimum Efficiency Reporting Value (MERV) rating. Knowing that the highest rating is 16, some people buy the highest-rated filter.

Do package units have air handlers?

Packaged systems usually consist of some combination of an air conditioner, furnace, evaporator coils, condensers, humidifiers, air handlers and other components.

Do HVAC package units have filters?

Many package units have filters right on the system that need to be changed and are easy to forget about.

How often do you change the filter in a carrier air conditioner?

Some should be replaced every 30 to 60 days. Others might last 6 months to a year. The answer depends on factors such as how often you use the system, the type of filter, whether there are any pets in the home, and your personal habits such as having smokers in the house, use of a wood-burning fireplace, and more.

Where is my carrier AC filter located?

However, common places filters are found can include: within a small slit on the bottom of the unit, on an external rack usually off the side of the furnace, in the ductwork as a cutout, or in the return air vents. If you are unable to locate your filter, please contact your dealer or installer.

Does a carrier air conditioner have a filter?

Look for a filter cabinet along the sides, top or bottom of the blower cabinet. The filter may be positioned horizontally or vertically, depending on the orientation of the air handler in the indoor unit. In some cases, especially on older models, the filter may be found inside the blower cabinet.

How do I stop my self clean in my carrier air conditioner?

Pressing the SELF CLEAN or ON/OFF button again during the cleaning cycle will cancel the operation and turn the unit off.

How do I know if my air conditioner has a filter?

It may be difficult to locate on some HVAC systems, but you can usually find the air filter in the return air duct. Or, in layman's terms, that big metal grate on your wall, floor, ceiling, or utility closet door. Return air ducts can be just about anywhere.

How do I know if my AC filter is clogged?

6 Telltale Signs It's Time to Replace Your AC Filter
  1. Accumulation of Dust Around the Air Vents. When an air filter clogs, it releases dust and dirt into the system. ...
  2. Strange Odor. ...
  3. Sudden Hike in Electricity Bills. ...
  4. Overheating AC Unit. ...
  5. Allergies. ...
  6. Malfunctioning AC.

Do you have to turn off AC to change air filter?

Turn the unit off. Turning this off prevents the air from blowing dust and grit into your system. Open up your vent and remove the used filter.

How to tell if a HVAC filter needs changing?

7 Signs That Your Home Air Filter is Past Its Prime
  1. Vents Are Full of Dust and Dirt. ...
  2. Air Filter Looks Dirty or Clogged. ...
  3. HVAC System Takes Longer to Heat or Cool Your Home. ...
  4. You Have Higher Energy Bills. ...
  5. Poor Indoor Air Quality. ...
  6. AC Unit Is Hot to the Touch. ...
  7. You Can't Remember the Last Time The Air Filter Was Changed.

How to clean filter on outside AC unit?

Wash the Filter

In a deep sink or outdoors using a garden hose, rinse the filter gently and thoroughly, and allow it to dry. If you need to provide a deep clean, soak the filter in a flat bin with 1 part white vinegar and 1 part warm water for an hour, and then rinse it gently with the hose.

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