At one time or another, I’m sure we can all admit we have heard a strange noise or noises of some type coming from our HVAC systems. There are a variety of HVAC noises that can come from a heating and cooling system which is why it is so important to be able to identify them and understand the source.
Here at South Nashville Heating and Cooling, our team of skilled professionals is steadfast in meeting the individual needs of all our valued clients. We strive to deliver the highest quality heating and cooling products and services in the Nashville, Brentwood, Franklin, and surrounding Middle Tennessee areas. We understand full well that your air conditioning or heating system is one of the most important appliances in your home. Your HVAC system contributes to the overall comfort of your home and family as well as the air quality and humidity levels inside your home. With that said, we want to help you understand what those annoying noises may be. It is important to know the source of any strange noises so as to determine how much of a problem it can ultimately pose to your system, and if you may need professional assistance when dealing with said issue.
Different HVAC Noises and What Causes Them
As we have indicated here, there are a number of HVAC noises that can present themselves in your heating and cooling system. Some of the most common sounds include, but are not limited to, the following:
• Banging noise – If you hear a loud banging noise coming from your system this is usually an indicator that there is a problem of some sort with the compressor that is responsible for pumping refrigerant into your system’s air handler. When you hear a loud banging noise it can sometimes be attributed to a break in the coil. If this is the source and the coil is not replaced promptly, your HVAC system is likely to stop heating or cooling all together.
• Rattling noise – A rattling noise that is coming from your outdoor unit can be caused by foreign objects that have made their way into the unit. Objects such as leaves, dirt, sticks and other debris on the fins or above the fan tend to be the culprits. Be sure to turn off the system’s power first before removing the debris as a safety precaution. A rattling noise can also be the result of a short caused by a bad capacitor, transformer or motor, a loose coil, fan blade or terminal connection or even a broken wire. If you don’t notice any visible debris, in most cases, calling in a professional is the safest method to pinpoint and correct the exact issue.
• Screeching noise – A squealing or screeching noise is usually a warning indicator that certain components of your system are nearing the end of their lifespan. Typically screeching sounds mean that the bearings on the fan motor are wearing down and are in need of replacement. Furthermore, when a fan blade rubs against a part of the unit, such as the fan housing, a squealing sound will occur.
• Clicking noise – A clicking noise often times means there is a problem with the thermostat. When this happens, it usually means that the temperature sensor cannot register temperature changes as a result of an obstruction or a short circuit. If it is faulty, it will more than likely need to be replaced.
The Pros Who Care
We hope this information helps you to identify any HVAC noises you may experience. Whatever the noise may be, rest assured we are the team for you. Our Nashville area HVAC professionals stand ready to identify the source of any strange noises and provide effective and affordable solutions. Be sure to contact our team immediately if you experience any of these concerning noises and issues. We look forward to serving you and to providing you with the highest quality products and customer service!