How Often Should You Clean Your Air Ducts If Your Home is Multi Story

By | September 7, 2017 | Contractors, Improvement

According to the NADCA, homeowners are advised to clean their HVAC air ducts every 3 – 5 years. Generally, you should clean the air duct when it is dirty. One way to determine whether the air duct is dirty is to check the inside of the air event register and see if there is any black dust that has accumulated there. If you see a lot of black dust, it means that your air duct needs cleaning.

Sometimes, when you breathe in the air, you can feel that there are mold particles in it. If you suspect the existence mold particles exist in your air duct, it is the time that you clean it. Another sign that indicates it is time to clean your air duct is when you see pests like rats and cockroach entering and exiting it.


Cleaning the air duct regularly ensures that there are fresh airs in your home.

If you don’t clean the air duct promptly, the air that it releases is dirty and can contain microscopic elements that are harmful to your lung health. People that suffer from health issues like asthma and elderly people must take care to clean the air duct every now and then.

Regularly cleaning the air duct also ensures that your HVAC system has a longer lifespan and work more efficiently. A study conducted by the Environmental Protection Agency (EPA) shows that 1mm of dust can reduce the efficiency of the HVAC system by 21%. Cleaning the HVAC system can reduce the percentage of contaminants in the air by up to 75%.

The frequency of cleaning the air duct can depend on a number of factors. For example, if you have pets that shed a lot of hair, you should clean the air duct more often. You should also clean the air duct after you just finished a home renovation or when you are moving to a new house. This is because the air duct is likely to be filled with sawdust.

If you have children in your home, you should also regularly clean the air duct of your HVAC system because they breathe faster and their short height allows them to breathe air close to the ground that has a higher amount of contaminants.

It is recommended that you hire a professional air duct cleaning services if you don’t know the proper cleaning procedure for cleaning the air duct. Air duct cleaning can cost in between $300 – $500. The air duct cleaning professional has the right tool and equipment to clean every part of the system that the air travels. The rotary brush cabling system will brush out the debris while the negative air machine will remove the debris through a vacuum.