3 Sounds That Can Point Toward HVAC Breakdowns

Having a comfortable home year-round in Hampton, Virginia, can take its toll on your HVAC system. Regular wear and tear are to be expected for any HVAC system, but sometimes breakdowns can occur, throwing the whole system. Sounds are often the first indication that something is going wrong. Here are three sounds you need to be aware of that can point toward major issues within your HVAC system.


Rattling, whether located inside or outside, points to loose parts or debris caught up in your system. It can be difficult to locate exactly where the rattling is coming from, but a good place to start is getting all of the components of your system tightened, including the brackets that hold your indoor vents to the wall or ceiling. If the rattling is coming from the outdoor unit, an expert can help quickly deduce what part needs to be fixed or replaced.


Screeching is definitely a sign that something has gone wrong, and you need to get it fixed quickly. Screeching can point to a variety of issues but the problem is typically located in your outdoor unit. Luckily, screeching is often caused by a relatively easy-to-fix issue: a bad motor belt. There are two approaches to solving this issue. Lubrication may be all that’s needed, but if the belt is close to snapping or has already snapped, you’ll need to get it replaced.


If you hear repeated clicking noises before your HVAC starts up, you may be facing a bad relay. Your thermostat is trying to click on your climate control system but can’t make a connection. Eventually, your system won’t start up at all, which can create an uncomfortable home and potentially negatively impact your home’s indoor air quality. This is often a quick fix but should be handled by a professional who is licensed to work with electricity and other delicate components.

If you’re hearing any of these noises, the experts at Lighthouse Mechanical Heating and Cooling can get everything back up and running smoothly. Give us a call at 757-251-0579 to set up an appointment today!

Image provided by Shutterstock

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