The frequency of changing the outdoor air conditioner filter depends on the type of filter you are using and the environmental conditions around your home. Outdoor air conditioner filters are typically called "condenser unit filters" or "pre-filters," and their purpose is to protect the condenser coils from debris and dirt.
Here are some general guidelines for how often you should change the outdoor air conditioner filter:
Disposable Filters: If your outdoor air conditioner uses disposable filters, it's recommended to check the filter at least once a month during the peak cooling season (summer) when the air conditioner is running frequently. If the filter appears dirty or clogged, it should be replaced immediately. In less demanding seasons, you can check the filter every two to three months.
Washable Filters: Some outdoor air conditioner filters are washable and reusable. If you have a washable filter, you should still inspect it monthly during peak cooling season and clean it as needed. Once a month is a good rule of thumb, but depending on the environmental conditions (dust, pollen, etc.), you might need to clean it more frequently.
Environmental Factors: The frequency of filter changes can vary based on the environmental conditions around your home. If you live in an area with high levels of airborne pollutants, pollen, dust, or pet hair, you may need to change or clean the filter more frequently.
Regular Maintenance: Apart from the filter, it's essential to have your air conditioner undergo regular maintenance by a professional HVAC technician. During maintenance visits, the technician will inspect and clean the condenser coils, which can help ensure efficient operation and reduce strain on the filter.
Remember that a dirty or clogged filter can reduce the airflow to the condenser unit, making the air conditioner less efficient and potentially leading to damage over time. Regularly inspecting and changing the filter as needed will help your outdoor air conditioner perform optimally and extend its lifespan.