Experiencing abnormal noises coming from the air conditioner either when it starts up or shuts off is never a normal symptom. These noises indicate that there is an underlying issue with the air conditioning system that needs to be addressed. Ignoring these unusual noises can lead to more costly problems as a domino effect occurs within the AC’s mechanical structure. All the moving parts of the system work together to ensure comfortable temperatures inside your home. Putting additional strain on these parts will result in increased wear and tear, as other components try to compensate. It is important to avoid unnecessary expenses and additional damage to your cooling system. Many issues can be resolved with a simple fix when these noises manifest. At Air Supply Heating & Air Conditioning, we would like to explain a few reasons why your air conditioner might be making strange sounds when it starts up and/or shuts down.
Why is My AC Making a Loud Noise?
1) Ducts: In sheet metal air duct systems, loud creaking noises can be heard due to constant temperature and pressure changes, causing the air ducts to expand and contract. It is possible that the air ducts may have a leak or be disconnected, resulting in these sounds. Poor ductwork can hinder the efficient flow of cool air through the vents.
2) Air Handler / Fan: The air handler or fan can be the culprit behind the banging noise produced when the blower wheel hits another part of the unit. This unusual clanking sound may occur when the fan’s mounts become loose, throwing it off balance as it slows down and hits its enclosure.
3) Compressor Motor: If the air conditioner produces noises only when it turns on, the compressor motor is a likely suspect. A noticeable decline in cooling output further suggests a problem with the compressor motor.
4) Dampers: Another potential cause of strange noises is dampers. Some air conditioning systems have dampers that adjust the airflow reaching different parts of your home. The slamming sounds may be heard when the damper closes after the air conditioner shuts off.
Abnormal air conditioner sounds raise several concerns. They may indicate a faulty compressor, loose components, or a blocked air filter. High-pitched whistling suggests a refrigerant leak, while rattling could signal loose fan blades. Grinding noises may point to motor problems as well. It is essential that you schedule a prompt inspection and repair are essential to prevent further damage and ensure optimal air conditioner performance.
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These are the common situations in which sounds are typically produced when the air conditioner starts up or shuts down. If you notice these noises, it is advisable to seek professional assistance from Air Supply Heating & Air Conditioning for an assessment. A certified technician can identify the source of the problem and perform the necessary repairs to ensure the noise stops and your cooling system operates efficiently at its full potential. Contact Air Supply Heating & Air Conditioning today to maintain a comfortable home environment with our expert air system services.