Why Does Your AC Smell Bad When it Runs?
If your air conditioner smells bad when it runs, it’s usually a sign that moisture, buildup, or a mechanical issue is present inside the system. One common cause is mold or mildew growth on the evaporator coil or in the drain pan, especially if moisture isn’t draining properly. A musty smell often points to this kind of biological buildup. A burning or electrical odor can indicate overheating components, damaged wiring, or a failing motor, which should be addressed quickly for safety. If you notice a dirty sock or stale smell, it may be due to a clogged air filter or dust buildup in the ductwork. In some cases, pests or debris inside the system can also create unpleasant odors. Because these issues can affect both air quality and system performance, it’s best to have an HVAC technician inspect and clean the system to eliminate the source of the smell.
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How Often Should You Change Your Air Filter?
You should generally change your air filter every 1 to 3 months, depending on the type of filter you use and your home’s conditions. Basic fiberglass filters typically need to be replaced monthly, while higher-quality pleated filters may last up to 90 days. However, factors like having pets, allergies, smoking indoors, or running your system frequently during hot or cold seasons can require more frequent changes. A clean air filter is important because it helps maintain proper airflow, improves indoor air quality, reduces strain on your HVAC system, and can even help lower energy bills. Regularly replacing your filter is one of the simplest and most effective ways to keep your air conditioner running efficiently and prevent avoidable breakdowns.
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How Often Should You Change Your Air Filter?
You should generally change your air filter every 1 to 3 months, depending on the type of filter you use and your home’s conditions. Basic fiberglass filters typically need to be replaced monthly, while higher-quality pleated filters may last up to 90 days. However, factors like having pets, allergies, smoking indoors, or running your system frequently during hot or cold seasons can require more frequent changes. A clean air filter is important because it helps maintain proper airflow, improves indoor air quality, reduces strain on your HVAC system, and can even help lower energy bills. Regularly replacing your filter is one of the simplest and most effective ways to keep your air conditioner running efficiently and prevent avoidable breakdowns.
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