How Often Should HVAC Ducts Be Cleaned?

Perth Air & Power Solutions

Cleaning HVAC Ducts

Now that we’re getting into the colder months and your air conditioning systems are probably having a bit of a rest, it might be a good time to start thinking about maintenance. Because heating, ventilation and air conditioning (or HVAC) ducts are mostly out of sight, they also tend to be out of mind, which means they can get neglected. But like any other home or commercial installation, an HVAC system needs to be properly maintained at regular intervals to avoid damage or impaired functionality.

Once every two to three years is generally how often HVAC ducts should be cleaned, but there are a number of factors that might influence exactly how regularly you might need to have this maintenance procedure carried out.


Number of people in the home or business

HVAC in Home

The busier the premises, the more likely it is that people will bring dust inside which can contribute to a buildup in the ductwork. The more dust and other particulate that is brought into the home or workplace, the faster it can build up in the system which may increase the frequency at which you should have your HVAC ducts cleaned. It may also increase the amount that your air conditioning system is used. The more people there are on a premises, the more likely it is that the air conditioner will be in use.



Pet Fur In HVAC Air Ducts

As much as we love our furry friends, they contribute quite a bit to dirty air ducts. They do this by shedding fur and pet dander which consists of microscopic flecks of skin. It is shed by most furred or feathered animals, and due to how light and small it is, it can remain suspended in the air and thus circulate around the HVAC system. The more pets you have, particularly if they are big shedders, the faster dust buildups will occur in your ducts.



Home Renovation Pollutes HVAC Duct

If your home or business premises has undergone any renovations or extensions then there is a good chance that a fair amount of dust has gone into the HVAC ducts. Renovations and extensions create a lot of dust through the use of dry cement, plaster, bricks, paint and various other building materials. This dust is usually very fine and can easily remain suspended in the air and therefore circulate through your air duct system regardless of whether the air conditioning unit has been used or not.


Type of work that is carried out at your commercial premises

Manufacturing in Heavy Industry

In the case of commercial air conditioning systems, the type of business that you operate will affect how often you need duct cleaning. If your commercial operation is in manufacturing then there is a good chance that it produces a lot more dust and debris than an office.


Stove tops and fireplaces

Fireplace in Home

Most modern or recently renovated homes have effective range hoods and ventilation systems where fuels are burned. But even with proper ventilation, if fuels are being burned it is inevitable that some particulate will enter the living space unless the appliance is completely enclosed.



Molds on HVAC Duct

This is the nasty stuff that needs to be dealt with right away. If you spot mould on any of the vents, it’s possible that it has spread throughout the home’s HVAC system. This mould can cause various health problems for you, your family, or your colleagues so if you find anything that appears to be mould, you’ll need to have an expert diagnose it and then proceed to have the HVAC system professionally cleaned.


Signs of dirty or contaminated air ducts

It’s important not to simply assume that air duct cleaning only needs to be carried out on schedule, as unforeseen circumstances may speed up the process of contamination. The following is a list of signs that you may need to have them cleaned:

  • Significant dust levels inside the building. If you’re struggling to keep your dust levels under control, it’s likely that there has been a buildup of debris within the system.
  • Dirty vents. A buildup of dirt and debris on the vents may be a sign that there is an issue deeper in the ductwork.
  • Unpleasant odours. If smelly dirt or dust has entered the system and attached itself to the inside wall of a duct, it will cause an unpleasant odour in the air that comes out of the vents. This gives you a pretty good indication that a dust buildup has occurred within the system.

So how often should HVAC ducts be cleaned?

The general rule of thumb is once every two or three years. However, certain factors can speed up dust and debris contamination so it’s important to be aware of the signs that may indicate an accelerated buildup. If you think it’s time for your HVAC ducts to be cleaned, get in touch with Perth Air and Power Solutions to book an inspection. And for more information on HVAC installation and HVAC repairs, give us a call and speak to one of our friendly technicians.



article thumbnail image

Decoding Comfort: How Does Split System Air Conditioning Work?

Posted on Monday, March 25th, 2024

This blog will answer the questions of ‘how does split system air conditioning work?’, how it can benefit your workplace and what you need to know when it comes to selecting the right system for you....

Read more
article thumbnail image

Unlocking Efficiency: How Much Energy Does a Commercial Refrigerator Use?

Posted on Tuesday, January 30th, 2024

If you run a business that requires cold storage, you might be asking about how much energy a commercial refrigerator uses to prepare for the cost of running it. Understanding energy usage is crucial for effectively managing this and minimising your business’s bills....

Read more
article thumbnail image

Can A Commercial Freezer Be Used As a Refrigerator?

Posted on Tuesday, January 02nd, 2024

Commercial freezers are specifically designed to maintain much lower temperatures than domestic refrigerators, impacting the freshness and safety of stored food, but can they be used as one? In this blog, we'll tackle the question head-on and explore whether this unconventional approach to commercial refrigeration is a viable and cost-effective solution for commercial systems dealing with limited space or budget constraints....

Read more
article thumbnail image

What is The Difference Between Commercial and Industrial Refrigeration?

Posted on Thursday, September 14th, 2023

When it comes to both commercial and industrial refrigeration, figuring out what exactly your business needs comes from knowing the difference between the two. The main differences between commercial and industrial refrigeration are the size and capacity of the equipment, power requirements, temperature range, types of refrigerants used, and maintenance and servicing needs....

Read more
article thumbnail image

Maximising Efficiency and Comfort In Your Business: What is Split System Air Conditioning?

Posted on Tuesday, August 08th, 2023

In the realm of air conditioning, split-system air conditioners have emerged as a popular and versatile option for both commercial and residential spaces. Split system air conditioning consists of two main components: the indoor unit and the outdoor unit....

Read more
article thumbnail image

Efficiency and Comfort in Winter: Unraveling the Best AC Mode for Your Business

Posted on Wednesday, July 05th, 2023

For commercial building owners and facility managers in Perth, knowing how your air conditioning units work during winter is crucial. Winter often creates a challenge: how to maintain a comfortable indoor temperature without an immense energy bill?...

Read more
article thumbnail image

Ducted Evaporative Air Conditioning: How Much Does It Cost

Posted on Monday, June 05th, 2023

As a commercial property owner or manager, finding a cooling solution that is both cost-effective and energy-efficient is a great way to save money. Ducted evaporative air conditioning systems can be a good choice to cool large spaces as they also reduce your business's energy usage. However, it's important to understand the costs of these systems before making any decisions....

Read more
article thumbnail image

Australian Winters – What’s The Best Temperature For Your Air Conditioning

Posted on Tuesday, May 09th, 2023

As the winter season settles in Australia, it's important our workspaces are pleasant when we step in from the cold weather. However, with rising energy costs and how much air conditioning impacts the environment, it's more important than ever to find the ideal temperature in the winter months so that everyone is happy....

Read more
article thumbnail image

The Basics of HVAC Systems For Your Business: What You Need To Know

Posted on Friday, April 07th, 2023

With Perth's hot summers, most if not all businesses need a form of air conditioning to keep everybody cool and comfortable. Air conditioning comes in many formatsc, with reverse cycle wall units, evaporative systems, and commercial HVAC split systems. The best air conditioner for your building depends on many factors, including the location, its surroundings, and its indoor space....

Read more
article thumbnail image

How Do Motion Sensor Lights Work?

Posted on Friday, March 10th, 2023

Motion sensor lights are becoming a popular choice among business owners, with a lot of premises opting to automate even the simplest daily function. But what exactly are motion sensor lights, how do they work, and what are the benefits? Well, read on to find out if they would make a sensible addition to your business premises....

Read more