Diagnosing Air Conditioner Sounds: 7 Signs You Need Help Now
-
While no air conditioner operates in complete silence, you shouldn’t be hearing any clicking, hissing, or rattling. Once these odd noises hit the air, your system is trying to tell you something needs to be looked at ASAP.
Do you have a serious problem on your hands, or is this noise something you can fix? Our troubleshooting guide has explanations for all the serious (and not-so-serious) air conditioning sounds you’re hearing.
The sooner you fix this problem, the sooner you can start enjoying steady cooling again. Florida Home provides local air conditioning installation, repair, and maintenance services to homeowners and landlords in Duval County and the surrounding areas.
7 Serious Sounds That Need Immediate Professional Help
Air conditioner sounds can be startling, but they give you your first plan of action. Start your troubleshooting by looking for any of these seven serious noises. If you’re not sure what any of these sounds actually sound like, listen to these example noises.
1. Clicking
Clicking noises usually stem from the outdoor condenser unit of a central air conditioning system. If you notice a clicking noise coming from your AC while you're outside, it likely means a fan blade has come loose. There might also be debris inside the unit striking the fan blades as they move.
To troubleshoot this problem, take a moment to inspect your condenser and look for any obvious signs of damage. Remove debris from the area (such as rocks, leaves, or twigs), and tighten any bolts that appear to be loose.
If these tasks don’t stop the noise, you’ll need to schedule an appointment with a local technician to perform an inspection and cleaning. They might also need to tighten any interior components that could be the cause of the clicking you hear.
2. Rattling
An air conditioner vibrator noise can sound like rumbling or rattling in either the indoor or outdoor component. This sound usually means something is gradually coming loose. You can attempt to tighten any exterior panels to see if the rattling is coming from the appliance's casing.
If this doesn't solve the problem, however, it's time to call in a professional for a repair job. Since air conditioners have a number of interior components, it's best to let an experienced technician locate and address the loose part.
3. Banging or Clanking
These noises are easily some of the loudest and most startling. If your system starts banging or clanking when you start it up, you likely have fan blades that have come loose and started moving around.
However, you may also have a compressor that’s starting to show its age and becoming worn out. Unfortunately, there are no DIY fixes for this issue. You’ll need to call for a repair job to have a technician open up your system and look at your parts. They may need to install a new fan blade or, if the issue is very serious, may recommend an air conditioner replacement.
4. Hissing
Is your AC making noise that reminds you of escaping air? This sound almost always comes from a refrigerant leak. If your system has become damaged or extremely worn out, this essential chemical can start dripping out of your unit.
Leaking refrigerant is a serious issue due to its toxicity and flammability. Fortunately, an experienced technician can find the source of the leak, patch it up, and refill your system.
5. Buzzing
If your AC makes a buzzing sound, you’ll definitely need a professional. While this sound may seem minor since it’s not as loud as hissing or banging, it’s still a problem. Buzzing usually points to an electrical problem where electricity isn’t consistently or safely passing through your system.
Your electrical issue could stem from melted wires, worn out connections, or physical damage after a storm. Never try to handle an electrical issue on your own; always call a technician when you hear this sound.
6. Screeching
Air conditioning equipment uses belts in the fan and air handling system. When these belts begin to wear out, they tend to create a telltale screeching sound.
If you hear screeching noises from your air conditioner every time it activates, you'll need to call in a technician to replace the belt. Make this call as soon as possible: Like a car engine, the interior of your air conditioner can be damaged if the belt fully wears out and snaps.
7. Whistling or Whining
Air conditioning sounds that remind you of whistling or light whining happen when air escapes through worn seals or holes in your system or nearby ducts. In some cases, whistling happens when the bolts holding your air conditioning system together become loose, affecting the integrity of its seals.
You can try tightening the bolts on the exterior of your appliance to see if this solves the problem. If not, the cause could be a deteriorating seal or a leak in an air duct, both of which should be addressed by an HVAC professional.
Each air conditioner repair visit will have a different cost depending on the severity of the issue.
Call us for a free quote and to learn about our latest deals!
3 Sounds That Signal a Healthy HVAC or AC
It’s just as important to know healthy air conditioner sounds. If you hear any of these noises, you have a well-functioning system that’s working as intended.
1. Soft, Light Humming
It’s completely natural to hear a low, soft humming when turning your system on. These sounds are your system pulling in electricity to power all its internal parts. As long as the humming isn’t too loud or disrupted by other sounds, you’re in the clear.
2. Slight Movement When Starting Up
Very old air conditioners sometimes wobble a little when starting up. As long as you’re not hearing any strange noises or smelling anything foul, that’s just a sign that your unit is showing its age. If your unit is more than eight years old or if you are worried about the start-up sounds, you can still call a technician to come take a look.
3. Very Little Noise Overall
Do you barely hear any humming at all? Brand new air conditioning systems are nearly silent, a positive sign of how far modern cooling technology has come. As long as you’re still getting strong airflow and there are no problems with your system’s interface, this lack of noise is a great sign.
Simple Prevention Tips to Keep Strange Noises Away
Want to keep these air conditioner sounds (and their underlying problems) at bay? There are a few simple yearly tasks you can complete to keep your energy bills low and your peace of mind high.
Change your system’s air filter every few months to encourage good airflow.
Clear off any debris from your outdoor unit in the spring or fall.
Double-check your thermostat for accurate temperatures.
Keep your air conditioner’s vents open and clear of dust.
Schedule a maintenance appointment once or twice per year.
Not only do these preventive tips help keep noises at bay, but they also help your system work better and last a little longer. If you need us to take some of the work off your plate, we can schedule regular tune-ups and provide a timely inspection.
Schedule Your Appointment with Florida Home Today
Are you hearing banging sounds from your home’s HVAC? It’s always better to be safe than sorry with your cooling systems. Many strange noises point to serious external damage, electrical issues, leaks, or deteriorating parts.
We offer flexible financing options and ongoing specials to help you budget for an essential inspection. You can find out more about our home HVAC services or read our blog for additional troubleshooting and maintenance tips.
Need a second opinion on fixing your noisy air conditioner? Don’t delay. Call us for an inspection and repair job today!