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5 Signs That Indicate Your Air Ducts Need Cleaning

October 04, 2022

Cleaning your duct once in a while is important to ensure good air quality, protect your heating and cooling system from clogging and improve your system’s energy efficiency. Duct cleaning is usually entrusted to professionals that use special air duct cleaning equipment. If you are not sure whether your ducts need to be cleaned, here are five signs that indicate you may need to take action.


5 Signs Your Ducts Need Cleaning


Mould growth

Mould growing in your ducts is a result of the condensation that occurs in the heating and cooling system. While mould is difficult to spot visually, it usually produces a specific odour that comes from your duct vents. Once you realize there’s mould in your duct pipes, you should take action immediately as mould present in the duct pipes can negatively affect your health, specifically your respiratory system.



Dust is another sign that  your duct system needs cleaning. In order to understand whether your ducts are clogged with dust, you need to change filters first and then run your heating system. If dust is blown out from recently changed filters, it means your ducts are clogged with dust.


Rodents or insects

Rodents and insects like to settle in the duct system, leaving behind droppings and insect husks. If you notice any of these particles blown out from your ducts, this indicates your duct system is infested. This, again, poses a great health concern for you and the residents of your home. In this case, duct cleaning needs to be paired with pest control for the best results.


High energy bills

Clogged duct pipes force your heating and cooling system to work harder to keep a comfortable temperature in your home. If you notice your energy bills are abnormally high, check on your duct system to see if it needs to be cleaned with a duct cleaning vacuum


Post-renovation or construction

If you recently had your house renovated or built, it is recommended to check your ducts for post-construction dust and debris. Even after the most diligent clean-up, your duct pipes can still contain some post-construction dust which, if left uncleaned, can cause problems in the foreseeable future.

Duct cleaning should not be attempted on your own. It needs to be delegated to professionals as they have the experience and proper duct cleaning tools and equipment to get the job done. Heat Seal Equipment Ltd. is a trusted name in the industry that you can rely on. We design, develop and manufacture all sorts of air duct cleaning equipment. Since 1975, we have been providing quality air handling equipment in Canada and worldwide. Get in touch with us today for all your duct cleaning needs.