A functional air conditioning system should operate quietly, and you will hardly notice it running. Even with a model that has a soft humming sound, you will not notice the noise as it is often muted in the background. So, if yours has the original engineering to muffle its noise but is making loud noises, you should consider an expert assessment. This is because an AC repair technician understands all the odd sounds that emanate from a unit and what they mean. As such, they can quickly help you troubleshoot and solve the problems with your system. Here are some of the top noises and their causes. 

Parts of the Unit Have Become Loose

Your unit operates through crucial components that come together and move the air through it. Components like evaporator coils facilitate the heat exchange and blow cool air back into the house. Hence, if your unit is making a humming sound, chances are that a part of the system is loose and vibrating. Some common components that may loosen with time include motor and fan blades, refrigerant piping, and others. 

You should know that loose parts are harmless in some cases except for the noise they produce. However, a loose bolt can stall the fan, damage the motor, and cause significant system issues. Hence, get a technician to assess loose components and put them back in place to prevent system damage. 

Some Parts Have Detached from the Unit

Detachment happens when you allow the loose parts of the system to go unchecked for a long time. In this case, banging sounds from the system often mean that a part is hanging loose inside the unit. You will find that some common parts likely to detach are the blower, crankshaft, and connecting rods. Remember that detached or broken parts can cause a system failure. Hence it's best not to ignore banging noises. Instead, call a technician to check the damage and decide whether to repair or replace the part. Once rectified, your unit should resume quiet operation.

The Refrigerant Is Leaking

The refrigerant is the fluid that maintains the function of your air conditioning system. When it is circulating as intended, your unit should have a quiet operation. However, it will produce a bubbling and hissing sound when leaking from the evaporator. You should know that this sound is unmistakable and continuous. It is also accompanied by a chloroform smell inside the house. Remember that a refrigerant leak is a serious hazard, and you should seek emergency repair services. 

Other sources of noise within the AC system include a failing thermostat and debris buildup. You should contact an AC repair professional when your unit starts making odd noises and get the system checked out. More so, timely repairs safeguard your home and increase the unit's lifespan. 

For more info, contact a local company like Advanced Air Conditioning and Heat.