HVAC systemYour HVAC systems make normal sounds like a quiet hum or a whooshing sound through the vents. There are instances when HVAC systems make strange noises that eventually become too loud and disruptive in the home. You don’t have to put up with all these. Listed below are some of the most common HVAC noises and how to address them.

Rattling Sound

If your HVAC system is producing a ratting sound then it could be an indication of several things. If it is coming from the outdoor unit, it is possible that the outdoor system has some kind of debris in it. This can still happen even if the grate will safeguard your unit from most large debris, small things can still get through. What you can do is switch off the system, cut the power, and take out the debris. In case you notice visible damages to the compressor, condenser coils, or fan, then you have to call your HVAC contractor. If the rattling noise appears to be internal, the first thing you have to do is turn off the system and call your technician right away.


A hissing noise means air is escaping from your unit. In case the noise is originating from the walls, then you probably have leaking ducts. This does not only create noise problems but also result in water wastage because instead of having the air circulated throughout your home, it is leaking into the walls. Not all homeowners are handy when it comes to duct repairs and that is when it is crucial to call a Florence HVAC contractor right away. A light hissing sound may be coming from the air vents and could be caused by an improperly set or incorrectly sized filter, which creates a gap in the seal. One simple way to fix this is to ensure that the filter is the correct size and installed correctly.


An HVAC system that is working properly produces a humming noise. However, if it is generating a clacking sound then you should definitely be concerned. The noise could be an indication that there are loose parts inside the unit. Failing to address these problems could lead to expensive damages to your unit. Turn off the unit and call an HVAC contractor at once.

Extend The Life Of Your HVAC Unit

An HVAC system is a costly investment for some. The average system, with proper care and maintenance, can last up to 20 years. As a homeowner, there are many things you can do to maximize the life of your HVAC unit and make sure that you get the most out of your investment.

Make sure that you have your unit cleaned before each season starts so small problems can be caught at its early stages, which will prevent them from becoming a costly disaster. Don’t forget to check the air filters regularly and make sure they are not clogged or dirty.

Call Florence HVAC Experts if you notice that your HVAC system is making unusual sounds or if you need help with its installation or maintenance.

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