It is normal for air conditioners to make some noise because they contain fans, which cannot run without making some sound. When the air gets pumped into the ductwork, it creates a low humming sound. Most of these sounds are negligible and not bothersome. However, sometimes, the AC may make more noise than usual. If your AC noise is annoying you, here are some things you can do to quiet it:  

Seek professional help 

If you are hearing any strange or unusual noises from your air conditioner, and you suspect that there is something wrong with it, you should inspect the air conditioner. Before you do that, make sure you shut off the power to the unit completely. The first thing you should try doing is to clean the air filters. Clogged filters can cause your air conditioner to work harder, which can make your air conditioner very noisy.  

If this doesn’t work or if the air conditioner is making very loud noises such as banging, rattling, or clicking noises, it is a sign that something is seriously wrong with your air conditioner and you should seek professional help immediately. An HVAC professional will thoroughly inspect the system, diagnose the problem, and rectify it.  

Ensure proper insulation  

If you use a window air conditioner, make sure the seal around the unit and the window frame are providing proper insulation. When the insulation wears off, the air conditioner has to work longer to reach the desired temperature. Also, the gaps and holes will allow air to rush inside and add to the noise levels. If your insulation has worn out, you should add insulation with foam strips. Sometimes, it’s not the seal but the window frame itself that becomes loose starts shaking and rattling, and makes a lot of noise. In this case, you will have to tighten the frame to ensure proper insulation.  

Check the fan blades and fan motor 

A blower fan is a very common source of rattling noises in the blower unit. Often, this rattling or murmuring is a result of debris accumulation inside the blower compartment. It may also be caused by loose fan blades. By simply vacuuming the debris and tightening the blades, you can fix the problem. Sometimes, the fan motor is the culprit behind the noise. You can lubricate the motor to quiet the noise.  

Ensure that the unit is clean 

Dirty air conditioning units tend to be very noisy. Over time, dust and dirt build up inside and around the unit, which not only makes the system noisy but also fills your home with allergens. The most basic thing you can do is remove the filter screens and clean them at regular intervals. Cleaning the external coils can also make a difference. Follow the instructions provided in the manual to clean the system. It is a good idea to hire a professional HVAC company for scheduled maintenance of the system, which will include thorough cleaning of the system 

Upgrade your system 

If your air conditioner is very old, then it might be a good idea to purchase a newer model. The latest models of air conditioners are much more efficient and quieter than the older models. So, consider investing in a new unit for a more efficient and quieter operation. 

Is your air conditioner making a lot of noise? Let our experienced technicians have a look and they will fix the issue to your satisfaction. 

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