You can buy a can of refrigerant at your local hardware store, and then you can add it to your AC yourself. The good news is that this problem is easy to fix. If your AC is low on refrigerant, it will sound like a jet engine. This is a common problem, and it’s usually caused by a leak. Your air conditioner may be low on refrigerant. Like other parts of the AC, the belt is bound to wear and tear, causing it to loosen its grip, slip and produce what sounds like a jet engine noise.ĭuring the summer months, the belt is also subjected to frequent expansion and contraction due to high humidity causing it to produce this kind of noise.įor this kind of problem, you will need to contact your HVAC professional to repair or replace the belt. The AC belt plays an important role in the air conditioner by connecting the motor to the fan. This problem is most common in ducted or central air conditioning units. Faulty AC BeltĪs earlier mentioned, faulty AC belts can cause different noises, including what sounds like a jet engine noise. However, it is always best to consult with an air conditioner repair technician to be sure that the problem is with the fan motor and not something more serious. This is a relatively easy process that can be done by most do-it-yourselfers. If the fan motor is not working, it will need to be replaced. Many times, the problem can be traced back to the fan motor and not the AC unit itself. When troubleshooting an air conditioner, it is important to check the fan motor first. In some cases, the fan motor may also overheat, which can cause additional damage to the unit. When it goes bad, it can make a lot of noise. Over time, the fan motor can become worn out and need to be replaced. The fan motor is powered by electricity and uses a small amount of energy to operate. The blades on the fan motor spin and push air through the evaporator coils and into the room. The air conditioner fan motor is responsible for circulating air within the AC unit. They will likely recommend that you install a humidifier in your home to help offset the amount of work that your AC unit has to do. To fix this problem, you’ll need to have your AC unit serviced by a qualified technician. This can cause it to make a lot of noise. If you live in an area with high humidity levels, then your AC unit has to work harder to cool your home. If neither of these two issues seem to be the culprit, then it’s possible that your air conditioner is simply overworked. However, it’s important to note that loose components will also produce rattling sounds and immediately need to be looked into. Other but not so common causes of a jet engine sound from your air conditioner include a faulty fan belt, damaged blower fan motor, or loose components in your AC. This is, in most cases, an indicator of an electrical fault or accumulation of debris. Damaged Condenser FanĪ faulty condenser fan motor will produce a jet engine noise or buzzing noises as it operates. If you suspect that your compressor is failing, you should contact a qualified AC repair technician to have it replaced. The compressor is responsible for circulating refrigerant throughout the AC unit, and when it starts to fail, it can make a lot of noise. One of the most common reasons why an air conditioner may start making a jet engine noise is because the compressor is failing. Once you have access to the coils, simply use a soft brush to remove any dirt or debris that may be clogging them. To clean the coils, you’ll need to turn off the power to your AC unit and remove the front panel. If these coils become dirty, they can’t properly do their job and the result is a loud noise coming from your AC unit. The evaporator coils are responsible for absorbing heat from the air inside your home and then releasing it outside. Another common cause of an air conditioner making a jet engine noise is because the evaporator coils are dirty.
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