If you hear noises coming from the air conditioner that differs from the usual humming, then you are probably wondering what has gone wrong and when it is time to worry. The sounds you hear from either the indoor or outdoor unit could indicate common problems that require air conditioning repair in Cupertino, CA. Here are some of the most common noises, where they likely come from, and what you should do about them.
Hissing Noises
Hissing noises often stem from a refrigerant leak. This is because refrigerant is under great pressure in the closed system and it hisses as it escapes. In older units, this needs to be addressed right away because the system may be releasing hazardous Freon into the atmosphere. This sound might also be an early indicator of internal pressure inside the compressor that has gotten too high. Either way, these issues will require professional air conditioning repair.
Clicking Noise
Ever heard a clicking noise coming from the air conditioner when it first starts up or shuts off? That sound is actually normal. But hearing the clicking repeating during the cooling cycle – that indicates there is a problem. The likely cause of the clicking is an electrical problem with capacitors or a relay switch. And as with all electrical issues, those are best left to the professionals.
Buzzing Noises
This one can be a tough one to differentiate from a normal humming sound. If you hear buzzing from the outdoor unit it could come from a faulty condenser fan, a faulty compressor, or issues with isolation feet. Buzzing could also come from an electrical issue or debris inside the outdoor unit that is interfering with the condenser fan. Buzzing from the inside unit is likely from frozen evaporator coils caused by a dirty filter and restricted airflow. You could try cleaning the outdoor unit and replacing the air filters to see if it gets rid of the noise. Otherwise, you will need to call for professional repairs.
Squealing Noises
This high-pitched keening is not something you want to hear coming from your air conditioner. Not only is it annoying, but it is often the result of metal scraping against metal – not something you want going on inside your expensive appliance. It could be dry bearings or a loose fan belt. Or it could be from more dangerous operating conditions and high internal pressure. You will want to get these issues fixed as soon as possible.
Banging Noises
If you notice a banging noise or rattling coming from the outdoor or indoor unit it is usually caused by a loose part. Most likely the blower fan has come loose and is rattling around. You will want to call a professional right away to come check things out. If you leave it alone, the loose part could cause further damage to your air conditioner.
Any odd sounds coming from your cooling system might indicate it is time for air conditioning repair in Cupertino, CA. today for fast, efficient, and reliable service.
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