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When is the Best Time to Clean Air Ducts?

Barry Martin
July 27, 2021

Air ducts are something you’ll find in almost every building as it has become an integral part of any building project. They are vital facets of maintaining a clean airflow within a building that preserves and protects the overall health of all its inhabitants.

But unfortunately, through time, it gathers dust and needs cleaning. Of course, you can request an expert to come and clean out your air ducts, but the most recurring concern on everyone’s mind is, when is it the best time to clean out air ducts?

Many factors affect the functionality of an air duct, depending on when you schedule the cleaning. We will dissect the whole HVAC cleaning process and duct cleaning intervals best suited for your system.

Why Cleaning Air Ducts is Important

HVAC systems will always continue to provide clean airflow to all the rooms of your building as their functionality dictates. They are constantly working to stabilize the air temperature and filter out dirt and dust particles, giving you clean air to breathe.

They have a series of intricate ductwork that makes sure this circulation of air is adequate. Over time, air ducts can go through some unavoidable wear as they accumulate dirt inside them.

If left unnoticed, air ducts could also become a home for pests, worsening breathing conditions. Once the air duct is dirty, it will circulate contaminated air to the entire building, and its effects will be noticeable in a matter of hours.

Moreover, it is mandatory to have your air ducts cleaned after a certain period as advised by local authorities to prevent undesirable outcomes. Having filthy air ducts can lead to dangerous consequences, which we have already discussed in detail in a previous release.

Dangers of Unclean Air Ducts

Having unclean air ducts can lead to severe repercussions, as we’ve mentioned earlier. It can range from having devastating effects on your health to fires spreading, which can cause damage on a large scale. In addition, the dust and dirt accumulation clogging the system also raises the energy required to make the system function normally, increasing operational costs substantially.

The consequences of having uncleaned air ducts can be catastrophic, which is why mandatory cleaning is enforced by local authorities to minimize the damage that it could have. The damage can spread to your neighbors in the form of a fire outbreak, which requires a swift response to uncleaned air ducts.

How Often should You Clean Air Ducts?

The mandatory cleaning period is six months, and it can vary depending on the region and its climate. For example, dustier areas require more frequent cleaning, while humid areas can require a deeper clean over extended periods. As for dusty and humid areas, your air ducts could form molds and need cleaning more frequently.

However, there are a few telltale signs that you can observe to know when it will be the right time to get your ducts cleaned. Look for these signs and symptoms and contact your nearest duct cleaner straight away.


When is the Right Time to Clean Air Ducts?

Your air duct is supposed to keep supplying you with clean and filtered air. However, if its functionality decreases, it will be noticeable instantly.

If you notice any of these signs, you’ll know it’s time to have your air ducts cleaned by a professional straight away. Cleaning your air ducts will make sure everything runs smooth, and it does not have any detrimental effects.

If You Notice a Strange Smell

The air circulated around the house is meant to be fresh and filtered. So when you breathe in the fresh air, you’ll know straight away everything is working alright.

However, if you smell something that doesn’t seem right, whether it is a musty smell or anything unusual constantly, it is advised to take swift action. This is because air ducts often become congested and may not efficiently circulate air.

In addition, the presence of pests in the ductwork can bring about a plethora of unpleasant smells.


So contact your HVAC technicians straight away and have them inspect and clean your air ducts, as the continuation of this can lead to the emergence of airborne diseases or system malfunction.

If Your Allergies are Suddenly Triggered

Clean and filtered air flows through your HVAC system and your air ducts if things are working fine. You won’t feel a thing since everything is running fine. Quite often, when air ducts haven’t been cleaned for a while, they accumulate dust that can be picked up by the airflow and circulated around the house. These dust particles can cause severe allergic reactions and also make others sick. If you notice you have allergies, you’ll need to call technicians to come and take a good look at the air ducts which could solve the issue.

When Your Temperature Stabilization Acts Up

HVAC systems are fitted with temperature stabilizers or thermostats that keep the temperature constant at all times. Equipped with air conditioning and heating furnaces, they constantly regulate the temperature.

If left uncleaned for long periods of time, dust can accumulate on the sensors and the temperature control units and cause the system to go haywire. Heating and cooling will no longer take place and the units could be working at full capacity without proper output.

If you notice these changes, get in touch with your local HVAC technicians to resolve the problem straight away as they clean the central heating systems efficiently to stop further damage to your HVAC system.

If You Hear Strange Noises

HVAC systems are supposed to be relatively quiet if they’re in perfect working order. There are not too many moving parts if you don’t count the fans involved in circulating the air all around the ductwork.

But sometimes things can go wrong and fans can often become clogged with dust and start to make unbearable noises.

In the case of such sounds, you are advised to have your entire HVAC system checked and cleaned by experts as soon as possible.


If there is a mechanical issue, it can get much worse over time and cause irreparable damage to the entire system. It could also be a fire hazard if left unchecked.

After Spring Time

Most experts advise a thorough duct cleaning at the end of spring. It is said to be the best time to conduct cleaning for quite a few reasons. Firstly, during spring, there is a continuous flow of pollen in the air which gets filtered through your air ducts.

There is also a lot of dust along with sudden humidity that can cause the already accumulated dust to form mold. Mold can have detrimental effects on the entire system and reduce its functionality to dangerous levels.

Once all that is done, have your ducts inspected and cleaned as it will remove all the filtered dust and pollen out of the system, prepping it for efficient functionality throughout the year.

Every Six Months

Experts and local authorities enforce the cleaning of air ducts every six months to keep everything in check. If an air duct is left unchecked it could be a danger not just to the building but also to the neighborhood. Six months is the optimal dust cleaning interval decided upon by experts.

Duct cleaning doesn’t cost much compared to the amount of money it can save and it has health benefits that can’t be overlooked. Keep your ducts and HVAC systems in check and have them cleaned every six months so they may function at their full potential while extending their lifetime.


We’ve advised on scenarios that will aid you in keeping your air ducts cleaned at all times. This is an enforced PSA to keep you, your family, and your neighborhood safe from the dangers of unclean air ducts while outlining its benefits.

Cleaning ducts is not an easy process and it is done best by experts. Hire the services of an expert today and get started with the best duct cleaning services.

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