Although this sound would originate from the furnace unit, it could be easily mistaken as coming from the ductwork. A spark can become dangerous. Note what's normal by listening to your AC. Thankfully, a humming sound coming from your A/C unit generally isn't serious—but it still signals that something inside your air conditioner is off. Both the inside and outside units of an air conditioner vibrate when they are turned on. Turn off the AC right away as there is a high chance for an electric spark and have the wiring fixed. When these compressors malfunction, it can make a loud or rattling noise. The cause of a misaligned fan can include debris that knocks the fan out of place, wear and tear and improper installation. Issue #2: Displaced fan blade. Air Conditioner Makes Loud Noise When Starting. Loose condenser fan. Issue: Loose Cover or Panels on Outdoor AC Unit. Over time, this vibration can cause the screws to become loose. When a clicking noise repeats throughout a cooling cycle, it's a sign of trouble.
This causes damage to components and results in lower cooling system efficiency. Common HVAC Contractor Repairs For Noisy Air Conditioning Units. Alternatively, if you hear the banging noise from inside your home, your indoor blower could be unbalanced. Outdoor unit has collected debris. High Compressor Pressure. Our technicians are able to quickly diagnose and correct all causes of bothersome air conditioning noises and get your cooling system back to normal. Typically, you'll need either a Phillips tip screwdriver or a ¼" nutdriver or socket to tighten the fasteners. Lubricate condenser fan motor bearings. Cooling System Is Pulsating. You'll hear the squealing sounds as the air conditioner first starts, and they last only about 10 to 15 seconds. 6 Reasons Your Air Conditioner May Be Rattling. Is your noisy air conditioner erupting a high-pitched screeching or squealing noise? The hissing noise shows the refrigerant is escaping into the air. The sooner you can pinpoint the cause of the noise and resolve the problem, the better it is for your unit's overall performance.
Similarly, a crashing noise may indicate that part of your air duct has fallen off. Why is my AC making Noise? | American Home Shield. Your system can completely break down if the compressor or fan motor gives out. Or maybe a motor within the compressor or condenser fan may need to be replaced. Furnace (or the Air Handler) Not Installed Properly. We have compiled an extensive list of all the AC noises you might encounter and what problems they signify to help you troubleshoot the next time your unit creates a noise-issue.
If you have concerns about handling this yourself, call on a professional. First, check the unit's outdoor fan and inspect the entire unit. Improper alignment or installation. If your air conditioner is making a shrieking noise, this is an indicator of an issue with the fan motor.
Other common signs of a refrigerant leak include: - Higher than normal energy bills. Compressor Valve Leak. Fortunately, there are some things you can check as a homeowner before calling in the pros. Noise issues can also be dangerous; for instance, a refrigerant leak, signified by a bubbling sound, can lead to refrigerant poisoning in humans. Outside ac unit making a rattling noise. Experience the Balanced Air, Inc. difference! You will need to contact a professional for a thorough checkup.