Occasionally, you may notice some odors come in with the airflow.
They can be unpleasant, annoying, or barely noticeable.
But, whatever the smell, it’s usually worth finding out why it’s there. A smell like a mold or mildew is a common one, but if you have been noticing a musty or moldy odor from your vents, it can be challenging to pinpoint the source. Running the AC a lot can cause condensation within the unit. If the moisture doesn’t drain properly, it can get into your ductwork and become a breeding ground for mold. Remember that mold exposure can cause upper respiratory health issues and be taken care of as soon as possible. Then your blower moves the odor and the spores throughout the house. A frozen evaporator coil can be the cause of this odor as well. Ac units work by absorbing warm indoor air, removing humidity from it, cooling it, and cycling it indoors through the return vents. Free-flowing air is vital for this process, which means having clean air filters is a must. Dirt and debris block airflow through the filters, causing water drops from humid indoor air to collect on the evaporator coils. The water drops on the coils then freezes as the AC unit’s refrigerant tools continue to cool the air. This is where the importance of changing air filters in the home is realized. You will need to have an HVAC technician find where the mold build-up is and have it cleaned properly. The problem might be an air conditioner that is too large for your home size. Bigger is not always better because your air conditioner doesn’t just cool the air; it dehumidifies it as well. If your unit is too big, it cycles too quickly and doesn’t run long enough to dehumidify the air. An HVAC provider can see if your team is too large and go over your options for a high-efficiency replacement. Sometimes a musty odor results from bacteria growing on the coils of your air conditioner or heat pump.