How Often Is It Necessary To Have My HVAC Duct/System Clean?

Regular mopping, sweeping, vacuuming and dusting of your home can make a big difference in your home. This works especially for the air ducts in your system. In fact, doormats at the entrances trap unwanted dust particles from entering your home. Did you ever wonder how often is it necessary to have my HVAC duct/system cleaned? If yes, then the first thing you need to remember is when was the last time you cleaned the air ducts. Because air ducts even trap those health hazards that are invisible and hidden from naked eyes. 

There are also a few pollutants that stick to the walls of HVAC ductwork. So, National Air Duct Cleaners Association (NADCA) suggests to every homeowner clean their HVAC ducts/systems every 3 to 5 years depending on the area they live in. Because in the long duration of running, the system gets out of its ideal shape of giving cool or warm air wherever necessary. Also, you need to note down a few other things on “how often is it necessary to have my HVAC duct/system cleaned?” 

Key Points To Note Down For How Often HVAC Duct Cleaning Is Necessary 

  • Time Period 

Research from the Environmental Protection Agency (EPA) tells that indoor air can be more polluted than outdoor air. The indoor air is 2 to 5 times more polluted than the outdoors. Moreover, the movement of these impurities indoors circulates throughout the households via air ducts and harms your family. So, you might be thinking how often is it necessary to have my HVAC duct/system cleaned? For residential places, the air ducts need to be cleaned every 2 to 4 years. But for places that come under commercial premises, the air ducts need to be cleaned every year. In fact, the cleaning work should be done by licensed HVAC cleaners and just anyone. 

  • Seasonal Cleaning

Because of the changes in seasons, air ducts that benefit you a lot will shut down due to excess dust accumulation. So, with this quick action of theirs, you will have to combat the allergies, and see the low efficiency of the HVAC system. Therefore, cleaning your air ducts despite the change in seasons also plays a major role in “how often is it necessary to have my HVAC duct/system cleaned?” If you choose to clean the ducts in summer and winter, you can enjoy the service of an efficient and fast system; warmer during winters, cooler during summers. But cleaning the system during fall and spring is the best decision as it will not be of much use then or mostly turn off. 

  • Pest Infestation

Creepy crawlies make themselves at home in your HVAC ducts. Hence, because of this, the contaminated air gets carried throughout your home along with other odours and debris. Also, the presence of pests around the ductwork of an HVAC system, proper cleaning is mandatory. Oftentimes, pests are also a sole reason if you notice the decline in your unit’s performance. Moreover, if neglected to clean the duct now and then, there will be an increase in vermin and pests keep bugging. The common pests that invade your HVAC duct are spiders, cockroaches, mice, rats and squirrels. 

  • Excess Debris Or Musty Smell

Did you ever experience a musty or bad smell in addition to debris coming off the unit whenever you turn on the HVAC system? If yes, then the smell will clear up after the system runs for a few minutes. But over the long run, your ducts need professional cleaning care at any cost. In fact, the smell coming from the duct also indicates the presence of debris and dust in the system. This dust along with the smell will then blow into all of your household rooms besides hot or cold air. Hence, when you run the HVAC duct on a daily basis, if you smell a strange odour, then it’s time to clean the system completely! 

  • Other Reasons 

A few other unknown reasons for your enquiry about how often is it necessary to have my HVAC duct/system cleaned? are: 

  • Hairy pests like dogs that spread their dander and hair
  • Notice your kids suffering from repeated asthma attacks and allergic reactions
  • Indoor smoking 
  • Air duct cleaning is a smart move when you renovate or rebuild your home 
  • When a disaster hits your home and causes water damage, fire damage and other damages.

Our Service areas are:

Duct Cleaning Inner Suburbs Melbourne

Duct Cleaning Southern Suburbs Melbourne

Duct Cleaning Western Suburbs Melbourne

Duct Cleaning Northern Suburbs Melbourne

Duct Cleaning Eastern Suburbs Melbourne


As HVAC ducts/ systems in homes collect harmful variants of dirt, germs and other pollutants that are detrimental to human health. Moreover, all these harmful pollutants can activate chronic diseases too. So, to prevent getting these diseases, it would be a wise decision to go with professional air duct cleaning services. With experts’ aid, you can be assured to breathe the cleanest and freshest air all the time. In fact, this way you can also be up-to-date about their efficiency. Hence, search for local results about air duct cleaning and hire the company Mark’s Duct Cleaning that befits your needs. A reputable company makes sure to clean the air ducts with perfection!