HVAC System Noises You Should Never Ignore

HVAC systems that run smoothly do not tend to emit strange noises. When something is wrong with your system, an unusual sound often acts as a key indicator of the problem.

If your HVAC system is noisier than usual, you may be tempted to overlook it. However, you should never ignore some noises. Here are a few of them.

A screeching or squealing noise from your HVAC system is a sign that the motor belt or bearings likely do not function as they should. Many systems rely on consistent lubrication, which means this noise should result in a small fix. If you ignore it, you may find that the belt or bearings break completely, resulting in an unnecessary parts replacement.

Banging sounds are usually mysterious, and pinpointing their cause is often difficult without calling on a professional. Overall, banging indicates that a part has come loose. Alternatively, it may mean that you need a compressor replacement. The severity of this issue will depend on the part that causes the noise. As guessing is never a good idea, use a maintenance service rather than risk an expensive fix.

Much like banging, a strange clicking sound could indicate any number of problems. One of the more concerning ones is that your HVAC's thermostat has started to fail. As the thermostat fails, you will notice that your system either undercools or overcools your property. As a result, your property will either become uncomfortable or your bills will rise significantly. Seeking a fix sooner rather than later helps you to avoid spending too much money in the long term.

If your system depends on an outside compressor, loud rattling sounds are a warning that it needs immediate attention. They may indicate that the motor is loose. If a loose motor becomes looser, it may damage other parts of your HVAC. If the noise starts to grow louder, this is a sign that the problem has gotten worse.

In some cases, a rattling sound is also a sign that debris is in the compressor unit. Allowing the debris to remain there for too long could cause damage to the mechanics. Unless you are adept at taking compressors apart, ask a professional to do the work for you.

When a loud whistling or screaming noise begins plaguing your air conditioning, turn it off and call for a repair service. This may indicate that the refrigerant has a leak, which makes the air in your property unsafe to breathe. Additionally, leaking refrigerant can damage items surrounding the air conditioning system.

Another source of loud whistling noises is high pressure inside the system. When this is the case, modern systems may switch themselves off completely to avoid irreparable damage. As a safety feature, an air con unit that closes off following a loud whistling that is similar to a kettle over boiling should prompt you to request an immediate repair.

Hissing that sounds like steam escaping could signal that your HVAC system has an air leak. Although this is not immediately dangerous, it does mean you are wasting money as your HVAC may need to work harder to achieve its target temperature.

Additionally, if the air escapes your system, you also might have a water leak. When this continues, leaking water could cause mould and damp, making your property less hygienic.

Fortunately, resolving most HVAC sounds is easy when you have the right expertise. Call on a team of professionals to diagnose your HVAC's unusual noises and restore normality to your property. We look forward to your call.