You might wonder why your a/c is making strange noises, but there are more than 2 reasons for this, but most can be addressed with a basic tune-up, but by not addressing these complications, you could end up spending more than you would have on the unit in the first place! Here are some regular reasons why your a/c makes noise. They range from easy noises to more complicated troubles, then among the causes are a faulty thermostat, a clogged fan, an a/c leak, a malfunctioning component, or a damaged motor; One cause is a faulty thermostat. The cause may be electrical or mechanical. The rattling may be continuous or intermittent. An unbalanced thermostat may be to blame, but if the noise is only intermittent, then it may be a more dire issue. An electrical concern or worn-out fan parts can cause a noisy fan. This is also a sign that your system's thermostat is out of balance. If the noise continues, you may need to consider an A/C upgradement, then clogged fans are another regular culprit! Depending on the cause, this noise may be caused by a failing fan motor or a faulty compressor. Ice accumulates in the a/c method while in this process, resulting in a buzzing or pulsating soundâ€¦ Water could also be causing the sound, as well as you should contact a professional as soon as possible to address these causes. In addition to dirty air filters, excess condensation as well as a malfunctioning thermostat can also be to blame. If you hear the noise, it's absolutely a concern with your a/c, then you should contact an Heating, Ventilation and A/C worker to repair the issue. Loud noise may indicate a malfunctioning component. The most regular reason for an a/c making noises is a motor out of balance. To stop the sound, you should repair the underlying problem. There is a option that a damaged fan motor causes whirring noises. The a/c should be checked by a professional if this noise occurs. If the noise persists after the compressor has been repaired, it may indicate a refrigerant leak.