The Top 6 Causes of a Ducted Air Conditioner Breakdown

Phill Crawley

Smarter Air & Electrical

; = Table Of Contents

Whether you depend on your ducted air conditioner to keep you warm on a chilly winter’s night or keep you cool at the peak of a brutally sizzling summer, one factor’s certain. Air conditioners are a blessing. Although, when facing a potential ducted air conditioner breakdown, they can become much less pleasant! Some of the telltale signs your aircon is at risk include leaking gas, inability to heat or cool, unpleasant odours, or excessive amount of noise.

Preventative Maintenance

Sadly, like all home appliances, your air conditioner has a finite lifespan. So, keeping your ducted system well maintained and getting it serviced annually are the best things you can do to extend the lifespan of your air conditioner!

Causes and Prevention of a Ducted Air Conditioner Breakdown

ducted-air-conditioner-breakdown-causes

You may have noticed something isn’t quite right with your system, but at which point do you have a problem that requires the attention of a ducted air conditioning expert? Here are our top six causes of ducted air conditioning breakdowns and the steps you can take to solve them.

 

1. Your Air Conditioner Unit is Cutting In and Out

These days, ducted air conditioners speed up and slow down thanks to modern inverter technology. However, if your outdoor ducted air-con unit is cutting in and out this could mean something is wrong, such as a shortage of gas or an airflow restriction which will eventually lead to a breakdown.

As a first step, clean your filters! If that doesn’t help, turn off the air conditioner immediately. Running your system when it’s short of gas may potentially harm your ducted system.

 

2. Your Zones Are Too Cold or Too Warm

Zoning systems are a crucial part of a ducted air conditioner. Their functionality should be checked over each time you have a service carried out on your system. Something as simple as a failed zone damper motor could result in conditioned air being constantly dumped into one particular room. This results in that zone getting way too hot or cold.

If you have a temperature-controlled system such as Advantage Air GENIII or MyAir, this problem could be as simple as the temperature sensor being placed in the wrong position in your room! We recommend seeking a professional’s advice before trying to relocate any temperature sensors yourself. Our staff would be happy to provide you with some guidance on this.

 

3. Your Electricity Bills Have Increased Significantly!

If your electricity bills are higher than normal first check how the air conditioner is being used.

  • Setting lower temperatures than normal? If so, try setting the air con to 24 in winter and 21 in summer.
  • Running too many rooms? Close some zones off & shut the doors.
  • Is there a window left open? Leaving an external window open means, you are trying to cool Brisbane; ensure all outside windows are closed.
  • Do you have more people in the home than normal? More people in the home means your air conditioner needs to work harder.
  • Are the kids running the aircon while you are out? Consider upgrading to MyAir so you can see when the system is being used remotely.

Here are3 Simple Tips to Improve Air Conditioner Efficiency.

If you have checked the above and adjusted accordingly, there may be a problem with your air conditioner but first, check that the return air filter is clean! Once you have confirmed the filter is clean, then it might be time to call in the ducted air conditioning repair experts.

 

4. Your Ducted Unit is Leaking Water

In summer when your ducted air conditioner is cooling, there should be water coming out of the main drain, which normally goes straight into your gutters (where you can’t see it). However, you should also have an emergency drain, which is visible somewhere normally located underneath the gutter coming out of the fascia.

If you see water coming out of the emergency drain, stop using your system immediately as this indicates the main drain is blocked and you’re at risk of the drain pan in the roof overflowing onto your gyprock ceilings!

 

5. Foul Smells or Odours Coming From the Vents

When your ducted air conditioner is running, the cooling coils are covered with water almost constantly; if you are a heavy user they may never get time to dry out which can result in mould, fungi and other microbes to start growing on the coils. This can lead to off-putting odours being distributed throughout your home via the air conditioner.

If you have noticed this at your home, first clean your ducted air conditioner filters. If that doesn’t resolve the issue, it may be time to book a deep clean of your indoor unit.

Another possible cause of odours is vermin, rats, possums, geckos, mice and even snakes that may have found their way into your air conditioner from the roof. Rats and mice in the roof can do extensive damage to your ducts and wiring, which can be costly to repair. So, if you hear scratching, thumping or little feet running around in your roof, it’s best to get on top of it straight away before they do too much damage!

 

6. Constant Air Conditioner Breakdowns and Costly Repair Bills

If you have had multiple ducted air conditioner breakdowns, it may be time to consider replacing your air conditioner!

The expected lifespan of a ducted air conditioner is around 10-15 years from our experience. After 10-15 years, repairs start to become costly. Making the switch from an older, less efficient system to a newer, more energy-efficient inverter system that runs the latest R32 gas (with global warming potential GWP (675) Zero ozone-depleting potential (ODP)), will make a world of difference!

Time for a New Ducted Air Conditioner System?

ducted heating gold coast

Newer systems such as MyAir provide greater control over your zones and also provide additional benefits such as smartphone apps that allow you to control the system while you are away from home. One advantage to this is to ensure your home is nice and cool when you arrive home from work!

If you believe you’re at risk of a ducted air conditioner breakdown, get in touch with Smarter Air & Electrical for honest advice!

fooman chew
We just had our unit installed a few days ago and wow...what a difference it has made. The process was so easy from start ...
fooman chew
We just had our unit installed a few days ago and wow...what a difference it has made. The process was so easy from start to finish. Alex was happy to run us through every system until we found exactly what we needed. The officecwas a pleasure to deal with. The installers, led by Ben were so considerate and professional and took such great pride in their work. I can't thank Ben and his team enough. They did a brilliant fit out, cleaned so thoroughly and explained all the tech so simply. I truely recommend these guys and hopefully you get Ben and his team for your fit out.
fooman chew
fooman chew
Emily Gotting
We cannot rate this company enough! Louis, Jayden, Aidan and Wayne were awesome, really professional and treated our home brilliantly whilst installing the ducted aircon ...
Emily Gotting
We cannot rate this company enough! Louis, Jayden, Aidan and Wayne were awesome, really professional and treated our home brilliantly whilst installing the ducted aircon and removing two opd split systems. The ducted system itself is so much more efficient than the two split systems we had. This company was great to deal with from the start at the quote phase, to site visit and all the way to the installation part. 5 stars. Would recommend.
Emily Gotting
Emily Gotting
Donna Tummers
Highly recommend Jack and the team they installed our ducted air condition today. The whole experience was above and beyond our expectations and we believe ...
Donna Tummers
Highly recommend Jack and the team they installed our ducted air condition today. The whole experience was above and beyond our expectations and we believe the whole experience was outstanding a wonderful,thoughtful and professional team. We are so appreciative to all the team at smarter air and electrical what a wonderful experience we had can not thank you all enough. Thank you to the team and merry Xmas
Donna Tummers
Donna Tummers
Shannon Terese
We had ducted air conditioning installed and the entire experience was excellent. From the initial quote to the final install, communication was clear and honest ...
Shannon Terese
We had ducted air conditioning installed and the entire experience was excellent. From the initial quote to the final install, communication was clear and honest and this close to Christmas extremely efficient service. The installers were professional, efficient, and were extremely polite and well mannered on site. The system runs quietly and cools the house perfectly. Would highly recommend to anyone considering ducted air from Smarter Air & Electrical.
Shannon Terese
Shannon Terese
Michelle Welch
My husband and I can't speak highly enough about the team from Smarter Air & Electrical. Great communication and information from Alex in sales. Jack ...
Michelle Welch
My husband and I can't speak highly enough about the team from Smarter Air & Electrical. Great communication and information from Alex in sales. Jack who came to quote and do the site inspection was such a nice guy and was so helpful. On the day of installation, Haydyn and his team arrived right on time. They did an amazing job and left everything so tidy and clean when they left. We were so impressed with how professional the whole team was. We would highly recommend this company if you're looking for a ducted air conditioning system. Thanks guys!
Michelle Welch
Michelle Welch
Dane B
Absolutely fantastic experience from start to finish. From receiving a quote with multiple options and add-ons providing transparency and accurate figures for pricing. The initial ...
Dane B
Absolutely fantastic experience from start to finish. From receiving a quote with multiple options and add-ons providing transparency and accurate figures for pricing. The initial site visit occurred quickly. After this we had an initial install date booked which I had to change and Smarter Air were extremely accommodating with a date change. On the day of installation, Joey and the team arrived on time, completed the job to a fantastic standard, left the house very clean, and explained how everything worked. All the guys who worked on the job were absolute champions. Best experience.
Dane B
Dane B
Sharon Butler
Jack and his team were so helpful, friendly and professional. They worked efficiently and cleaned up and left my house looking perfect. I love the ...
Sharon Butler
Jack and his team were so helpful, friendly and professional. They worked efficiently and cleaned up and left my house looking perfect. I love the way the air conditioning looks and fits in with the house .I have never had air conditioning before and I am so happy and grateful to have air conditioning for the summer . I could not recommend Smarter Air and Electrical more highly. First class service in every aspect from the initial consultation to the finished product !
Sharon Butler
Sharon Butler
Michael&Leanne O'bryan
Huge thank you to Ben and Sam for an amazing ducted aircon installation! Super professional, on time and so easy to deal with. The whole ...
Michael&Leanne O'bryan
Huge thank you to Ben and Sam for an amazing ducted aircon installation! Super professional, on time and so easy to deal with. The whole process was smooth and stress-free and the end result is perfect. Even on one of the hottest days, they powered through without complaint and still delivered top-quality work. Highly recommend these guys, absolute legends!
Michael&Leanne O'bryan
Michael&Leanne O'bryan
Neil Ackerman
Absolutely fantastic experience with Smarter Air & Electrical. From the first site visit, Ben (legend) was friendly, knowledgeable, and great to...
Neil Ackerman
Absolutely fantastic experience with Smarter Air & Electrical. From the first site visit, Ben (legend) was friendly, knowledgeable, and great to deal with. No sales pressure at any point—just honest advice, clear communication, and a genuine focus on what suited us best. The whole process was smooth and well-organised, with everything running on time and as promised. On installation day, Phil (one of the directors) was on-site to double-check plans and talk through any technical details or adjustments which was a great touch and showed how much they care about getting things right. The team was respectful, efficient, and left everything tidy. They clearly take pride in their work. The result is brilliant—clean install, great system, and total peace of mind. Highly recommend them for a stress-free, professional experience.
Neil Ackerman
Neil Ackerman
Ted Carter
Amanda told me she was sending her best tradie, Ben, who was punctual, professional, and polite. Ben, ensured the job was turned out as if ...
Ted Carter
Amanda told me she was sending her best tradie, Ben, who was punctual, professional, and polite. Ben, ensured the job was turned out as if it was work on his own home, and then educated my wife on the operation of our new aircon. In short, Ben is an LBW, ( living bloody wonder) and an asset to the business, and his offsider, Sam, a good bloke, with 2 ears, both of which seem to work.
Ted Carter
Ted Carter

Pin It on Pinterest