Has your HVAC system been particularly noisy lately? If your AC's suddenly making loud or unusual sounds, it could be an indication that something's gone wrong within your system. While a noisy air conditioner may seem like a minor inconvenience to some, ignoring these noises can lead to more significant problems, such as reduced cooling efficiency, higher energy bills, or even complete system failure.
Here at Spoor's Heating & Air Conditioning, we're committed to helping Auburn homeowners stay cool and comfortable with reliable AC repairs, preventative maintenance, and expert advice. Below, we outline some of the most common air conditioning noises and what they could reveal about the health of your system.
Don't let a loud air conditioner disrupt your home's peace and tranquility — contact our HVAC repair company today to schedule service!
Air Conditioning Sounds & Their Causes
Rattling: Loose Components
Typically, a rattling or shaking noise coming from your AC is a sign that an internal component has come loose. Some of the most common reasons rattling noises might occur include:
- Loose screws, panels, or other small components in your inside unit
- Leaves, twigs, or other debris have fallen in your outdoor unit
- Worn-out motor parts are increasing friction and causing internal components to shake
Banging: Broken Or Misaligned Parts
Loud banging, or the sound of metal clanging together, usually indicates a mechanical issue — meaning a component inside your AC unit is broken or out of place. Common causes are:
- A damaged or misaligned blower fan is hitting other internal components
- Broken parts inside the compressor
- A damaged or loose crankshaft, connecting rod, or piston pin
Buzzing: Electrical Issues Or Dirty Components
If left unaddressed, a loud buzzing noise may eventually lead to cooling issues or total system failure. These sounds are often associated with electrical problems or dirty components within your system. Common culprits include:
- Loose or frayed wiring
- A dirty or clogged condenser coil
- A failing motor or misaligned fan blades
- A refrigerant leak
Hissing Or Whistling: Air Leaks Or Refrigerant Issues
A steady hissing sound could be a sign of issues that require the attention of one of our professional HVAC contractors. Namely, if the hissing is coming from the AC compressor in your outdoor unit, it could indicate dangerously high internal pressure &mash; in which case you should turn off your system and contact us immediately for emergency AC repairs. The possible causes of hissing include:
- Holes in ductwork are allowing conditioned air to leak out
- A malfunctioning valve or internal pressure issue
- A refrigerant line leak
Screeching: Worn-Out Belt Or Motor
A high-pitched squealing or screeching sound, in addition to being incredibly obnoxious, tends to indicate a component is worn down or malfunctioning. Screeching noises are typically caused by:
- A worn or slipping fan belt (especially in older AC units)
- High internal pressure in the outdoor unit's compressor
- A worn or failing blower motor is creating friction
HVAC Maintenance Tips To Prevent AC Noise
Caring for your HVAC through routine maintenance is the best way to keep your heating and cooling system running quietly and efficiently. The following are a few preventative measures you can take to avoid the problems associated with unusual AC noises.
- Replace your air filter every 1—3 months to maintain proper airflow.
- Keep the area around your outdoor AC unit clean and clear of tall grass, overgrown shrubs, and debris.
- Ensure all vents are open to allow for adequate airflow and avoid pressure build-up in your ductwork.
- Continue to listen for new or uncharacteristic AC sounds and consult a professional HVAC technician about them early.
- Schedule regular HVAC maintenance tune-ups with Spoor's Heating & Air Conditioning!
At Spoor's Heating & Air Conditioning, we offer homeowners the opportunity to join our planned HVAC maintenance, the Home Comfort Club! Members of our HVAC maintenance program gain exclusive access to discounts and benefits that save them money on new parts, repairs, and installations. Contact us today to learn more about the benefits or join the Home Comfort Club!
When To Call Our Professional HVAC Technicians
If your HVAC is making loud, concerning, or generally annoying noises, then it's time to call in the pros at Spoor's Heating & Air Conditioning. Our team of experienced technicians responds quickly to calls and strives to provide every customer with honest and reliable service. Whether it's a noise that just started or one you've been ignoring for a while, our local HVAC company can help restore peace and quiet to your home. Contact us today to schedule a tune-up or learn more about our AC services!