The Hidden Dangers of a Dirty Air Conditioner—Protecting Your Family’s Health

Think your air con just needs a clean for better cooling? It could be a bigger deal than that — especially when it comes to your health
Your air conditioner does more than just cool the house. It also filters the air your family breathes every single day. But when it’s full of dust, mould or bacteria, it can quietly become a health hazard — especially in a humid climate like Brisbane’s.
At Kleen Air, we’ve seen what builds up inside neglected units. And while it’s easy to ignore when the cool air’s still flowing, what you can’t see (or smell) might be affecting your family’s wellbeing.
Concerned your AC might be making you sick? Let us take a look.
What’s Hiding in a Dirty Air Conditioner?
If it’s been more than 6 to 12 months since your last clean, there’s a good chance things are building up inside your unit. Here's what we regularly find:
Mould Spores
With Queensland’s humidity, it doesn’t take long for moisture inside your system to become the perfect environment for mould. Once it grows, those spores are pushed into the air and spread through your home every time the unit runs.
Dust and Pollen
Dirty filters and coils can collect layers of fine dust, pet hair and pollen. This gets stirred up and blown back into your space, irritating anyone with asthma, allergies or respiratory conditions.
Bacteria and Germs
The mix of moisture and debris can also harbour bacteria. And if your system’s never been cleaned properly, it can start to smell and affect indoor air quality — even if it still feels cool.
Our AC hygiene cleans are designed to remove all of this. Book yours today.
Signs Your Air Con Might Be Affecting Your Health
It’s not always obvious, but here are a few signs to watch for:
- Family members getting sick more often or feeling congested at home
- Coughing, sneezing or irritated eyes when the AC is on
- A musty smell coming from the vents
- Dust build-up around vents or on walls near the unit
- Headaches or fatigue that improve when you’re away from home
If any of these sound familiar, your AC might be part of the problem.
Who’s Most at Risk?
While dirty air can affect anyone, it’s especially important to keep your system clean if you have:
- Young kids or babies at home
- Elderly family members
- People with asthma, hay fever or respiratory conditions
- Pets that shed
- Family members working or studying from home long hours
Clean, filtered air matters more than ever — and your air con plays a big role in that.
What a Proper Clean Includes
At Kleen Air, we don’t just spray the outside. We do a full internal hygiene clean that covers:
- Filter removal and deep clean
- Coil flush with antibacterial solution
- Mould and odour treatment
- Drain and fan inspection
- Optional outdoor unit rinse
We clean the parts you can’t see — and those are the ones that make the biggest difference.
Want to breathe easier at home? Let us handle the clean.
Give Your Family the Gift of Clean Air
It’s easy to forget about your AC when it’s still cooling. But the air it’s pushing around your home? That’s what your family breathes every day.
A professional clean keeps your system healthy, your air clean, and your family safer.