Why Is My Air Conditioner Making Noises?

Air Conditioner

The typical modern air conditioner is designed to operate with minimum noise levels. If your air conditioner is making a loud or unusual noise, it could indicate an issue with one or more components of the air conditioner. Getting your air conditioner fixed can improve the performance of the air conditioner, reduce energy consumption, and allow the air conditioner to last longer. Any delay in fixing the air conditioner can worsen the problem, leading to costly repairs or needing to replace the air conditioner. The unusual noise is one of many indicators that can help alert you of possible problems with your air conditioner. Here are possible reasons why your air conditioner is making an unusual noise.

Low Level of Refrigerant

A leaking or low level of refrigerant can produce a hissing or whistling noise from the air conditioner. The role of the air conditioner refrigerant is to cycle through the system absorbing and releasing the heat at different stages of the cooling cycle. With a properly functioning refrigerant, the air conditioner will not be able to cool the air that flows in the room.

The refrigerant level should not get low as an air conditioner is designed to be a closed system without any leaks. If the refrigerant level is low, that means there is a leak in the system, which can produce a hissing or whistling noise. The refrigerant leak can happen at any component of the air conditioner that carries the refrigerant including the evaporator or the condenser. A professional technician can perform a leak detection service to pinpoint the location of the leak. This service might require the air conditioner to be removed for inspection. Once the leak has been detected, the technician will check if the leak can be repaired or if the part will have to be replaced.

Worn-Out Compressor

The role of the compressor in an air conditioner is to compress the refrigerant to create a pressure differential to allow the refrigerant to cycle around the air conditioning system. A worn-out or broken compressor can make loud or unusual noises. The compressor is made of several components including bearings. If any of the bearings get worn-out or damaged, it can lead to a buzzing sound from the air conditioner. If the bearing has seized, it can make a grinding noise. The compressor of an air conditioner can be repaired, however, if the damage is severe it will have to be replaced.

Malfunctioning Fan

The fan is one of the core components of an air conditioner. The role of the fan is to pull air over the evaporator coils, and then to recirculate the air into the room. There is another fan in the air conditioner that cools the condenser coils of the air conditioner. Damage to either of these fans can lead to a loud, unusual noise. In some cases, if the fans have accumulated dirt or if there is a foreign object in the fans that might also lead to unusual noise from the air conditioner. There could also be an issue with the fan motor or fan blade.

Loose Parts

Loose parts from the outdoor or indoor unit of the air conditioner can make a rattling or shaking noise. The loose parts can be the result of screws or nuts that allowed the panels, ducts, or motor to come loose. If the loose parts are left unchecked, it can lead to serious maintenance issues. The air conditioner filters can come loose due to damage or getting worn out. It is also possible the filters were not properly secured the last time they were cleaned.

Schedule HVAC Service With a Certified Technician

A professional technician with experience in air conditioner diagnosis and repair will have to perform an inspection service to determine the cause of the noise. To schedule an appointment with our certified and experienced technicians at Rosenberg Plumbing & Air, you can reach out to us through our website or give us a call. We offer all types of heating, cooling, and air conditioning (HVAC) services. With our technicians, you will reliable, safe, and affordable service. Apart from a full range of air conditioning services, we also offer services for ice machines, furnace installation and repair, commercial projects, and more. We are located in San Antonio, allowing us to serve all surrounding locations. Allow our technicians to inspect and fix any HVAC issue at your home or office. Contact us to schedule a service appointment now.

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