In fact, most central air conditioning units have two or more filters. These filters clean the air and secure. Yes, the central air conditioner has a filter. These filters clean the air and ensure good air quality as the unit circulates between indoor and outdoor air.
Filters clean the air that flows through the house by reducing pollen, bacteria, dust and pet dander. The air passes through the filter (or filters) and the filter material traps contaminants before they can circulate around the house. These filters also protect the air conditioner coils and the engine from the same contaminants. The air filter is usually close to your home thermostat, in a return duct.
Or, it's most likely right next to the air controller in your air conditioning system. If your HVAC unit is installed in the attic, for example, the filter may be installed in a ventilation grille rather than in a return duct. Be sure to find all the filters, as some systems have several filters and even several types of filters installed, such as a fiberglass filter or pleated paper, a washable filter, and an electrostatic air filter. For the Ruud Achiever, super-quiet, 80-foot air controller, there is a molded permanent air filter that slides down to the back of the unit when you look at it from the burner side.
If you can't find air conditioning system filters (there may be more than one air filter), here are some places to look. Once you have located the air filters, document the location of the HVAC system air filters for future building owners, occupants, or repairers. This is the metal box that contains the fan, the fan motor, the condenser coil and the compressor, many of the crucial components of the air system that allow warm air to enter and cool it before it circulates around the house. Normally, filters are placed inside this box in a place that will filter the air before it reaches the fan itself.
There is generally less air pollution for people living in the country and, therefore, less to filter out. Vertical air handlers can be an upflow unit that has return air that enters through the bottom of the air handler or blower and air conditioner (cooled or heated) that exits the upper part of the unit. I like a filter on the air intakes because it helps keep the return ducts and the fan fan clean; however, if you already have a suitable air filter in or on the air controller that should protect the fan, you would be careful to add more layers of filtration without talking to your HVAC company about the air the flow rate requirements of your system and the restriction of additional filters to ensure that you are not slowing down the air supply through the system. The key difference is that the intake grilles “draw air out of the room” and the duct grilles “push” the air conditioner into the room.
I have a new house and I can't find the filter in the attic air conditioning unit, there are no filters in the roof suction tubes.