Less Obvious Signs That You Need A Professional Duct Cleaning

20 November 2019
 Categories: , Blog


If you have metal ductwork in your home that allows the warm and cold air to flow into your house, then you should know that these ducts do need to be cleaned on occasion. If you have been putting off the cleaning for some time, then you should be looking for some signs that now is the time to get it done. While some signs are obvious, there are also some less obvious signs that you should be looking for, including the following:

Mold Growth Near Your Vents

You probably know that mold grows in dark, warm, and moist places. If you do not have a working dehumidifier on your furnace, then the ductwork can be the perfect place for the mold to start developing. When mold develops, it releases spores that grow into larger accumulations of mold wherever the spores happen to land. Spores can travel quite far, so if you see mold both close to and far from your vents, then this is a sign that you do have mold in the ductwork.

Mold growth can be hazardous to your health, causing allergies and asthma problems. It is wise to schedule your cleaning as soon as possible if mold is suspected. If you are concerned about health issues, you may want to ask your HVAC professional to take a mold sample for testing during the cleaning process. 

New Sounds Coming From The Ducts

You are probably quite familiar with the different sounds that your ducts happen to make. Some creaking noises are expected since the metal will expand and contract as the temperatures fluctuate. However, you should not be noticing any new noises. For example, popping and clanging sounds are signs of dirty ductwork. The noises indicate that airflow is being shifted or channeled improperly. This can cause a significant pressure change in many of the ducts causing noises. Additionally, as air slows down, it may make some noises that are unfamiliar to you.

In rare cases, the warmth from your heating system can cause the small particles of dust to explode. This may be one reason for the noises you hear and is a sign of an excessively dirty HVAC system and ductwork. In this situation, your ducts are likely partially clogged, so look for a decrease in airflow as well.

If you want to know more about ducts and the various signs that you may need a professional duct cleaning, speak with an HVAC company in your area today.