Duct Repair & Replacement in Melbourne
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Crushed, torn, disconnected or worn-out ducts fixed properly. We find the fault, photograph it and quote the repair before we touch anything — and if a clean is all your ducts need, we tell you that instead.
Is it the ducts, or the heater?
Plenty of “my heating doesn’t work” calls turn out to be a duct problem, and plenty of duct quotes are really a heater that’s reached the end. Here’s the quick way to tell.
Probably the ducts
- One or two rooms never warm up (or cool down) while the rest of the house is fine
- Weak airflow at some outlets but strong airflow at others
- Dust, grit or insulation fibres blowing out of a vent
- A whistle, rattle or flapping sound in the ceiling when the system runs
- A musty or animal smell that starts when the system turns on
Probably the heater or unit
- No warm air from any outlet, or the system won’t start at all
- An error code on the controller or the unit shutting itself down
- The heater has been condemned or shut off as unsafe
- Repeated repairs on the same unit over the last few winters
Six duct faults we find and fix
Disconnected runs
A duct can work loose from its outlet boot or junction, often after other trades have been in the roof. The air it carries heats or cools the roof space instead of the room.
Crushed or kinked ducts
Flexible ducting gets flattened when it’s walked on, stored over or squeezed through a tight crawl space. A kink chokes the airflow to every outlet past it.
Torn or perished outer jackets
The outer sleeve and insulation of flexible duct break down with age and roof-space heat. Once it splits, the duct loses heat on the way and can sweat in summer.
Rodent damage
Rats and mice chew through duct jackets and nest inside runs. That’s a repair job and a cleaning job: the damaged section comes out and the system is cleaned of what they left behind.
Sagging or unsupported runs
When straps fail, ducts sag between supports and form low points and kinks. Re-strapping and re-routing restores a smooth run.
Water and mould damage
A roof leak onto ductwork leaves stains, smells and sometimes mould inside the run. Wet, contaminated sections are replaced rather than cleaned.
How we call it — honestly
Most duct problems are local: one disconnected outlet, one crushed run, one section chewed by rodents. Those get repaired — the section is reconnected, re-strapped or replaced, and the rest of the system is left alone.
Replacing the whole system makes sense when the ducting has failed across the house, when it’s contaminated beyond cleaning, or when you’re changing from gas ducted heating to a ducted reverse cycle system, where the program guidance recommends new ductwork. Age alone is not a reason.
Either way, you see the photos first and get a firm quote before any work starts. We won’t sell you new ducts you don’t need — and if a clean is all it takes, that’s what we’ll recommend.

Real ducts. Real jobs. Photographed every time.
We photograph every run we work on, before and after — so you see the fault and the fix, not just an invoice.

BeforeAfter
What a duct repair visit covers
We quote before any work starts — repairs, replacement sections and any cleaning are all on the quote.
- Every run checked from the roof space or underfloor
- Each fault photographed and explained
- Airflow checked at the outlets
- A firm quote before any work starts
- Disconnected runs reconnected and sealed
- Crushed or damaged sections replaced
- Sagging runs re-strapped and re-routed
- Outlet boots, grilles and return-air fittings refitted or replaced
- Whole-system replacement when it’s past saving
- Before & after photos of the work
See inside a ducted system
Real FreshDuct jobs, filmed by our crews.
Swipe for more → · tap any video for sound
What our customers say about us
“I am very impressed with Gabriel and his team, they were very professional with their job, he taught me what am suppose to know about vent and how to take care of it. They did an amazing job, will call them again for next time.”
“We appreciate Manny’s job and all the cleaning that they did in our house. We had a bad problem with pet stains and bad smell in our carpet and the air duct but thanks to Freshduct air duct cleaning our house smell fresh and clean again.”
“The air in my home is really fresh and clean after they blew, vacuumed, and washed everything. I highly recommend them.”
How It Works?
Four simple steps from quote to fixed ducts.
Fill the form
Tell us about your home in about a minute — or call 04 3191 8137.
Get estimate
A free, firm quote upfront. No call-out fee, no hidden costs.
Pick service time
Choose a time that suits you — we work 7 days a week.
Your pro arrives!
A police-checked, fully insured technician inspects, cleans and photographs everything. You pay after the job.
You will know us when you see us
Branded vans, uniformed technicians, professional equipment — the same documented FreshDuct standard on every job.



Book with zero risk
No call-out fee
We come to you and quote for free — no fee just for turning up.
Pay after the job
You see the result and the photos first, then you pay.
100% satisfaction
Not happy with any part of the clean? We come back and re-clean it.
Before & after photos
Every job is photographed before and after, and the photos are yours to keep.
Frequently Asked Questions
Can damaged ducts be repaired, or do they have to be replaced?
Most can be repaired. A disconnected, crushed or chewed section is reconnected or replaced on its own, and the rest of the system stays. We only recommend replacing the whole system when the ducting has failed throughout or is contaminated beyond cleaning.
How do I know if my ducts are damaged?
The usual signs are one room that never warms up or cools down, weak airflow at some outlets, dust or insulation fibres coming out of a vent, and noise in the ceiling when the system runs. We confirm it by inspecting the runs and photographing what we find.
Is my problem the ducts or the heater?
If some rooms are fine and others aren’t, it’s usually the ducts. If no outlet gets warm air, the system shows an error, or the heater has been shut off as unsafe, it’s the heater — see our ducted heating replacement page for that.
Do I need new ducts if I switch from gas heating to reverse cycle?
Often, yes. The program guidance recommends new ductwork and fittings when gas ducted heating becomes ducted reverse cycle, because reverse cycle moves more air at a lower temperature. We inspect the existing ducts and tell you plainly what can stay.
Should ducts be cleaned before they’re repaired?
If they’re dirty, yes — there’s little point reconnecting a run full of dust or rodent debris. We can clean and repair in the same visit, and you see before & after photos of both.
How much does duct repair or replacement cost?
It depends on how many runs are affected, how easy the roof space or underfloor is to work in, and whether it’s a repair or a whole system. There’s no call-out fee, you get a firm quote before any work starts, and you pay after the job.
Can rodent-damaged ducts be fixed?
Yes. The chewed or soiled sections come out and are replaced, and the system is cleaned of nesting material and droppings. We photograph the damage so you can see what was there.
Will repairing my ducts help my heating bills?
A disconnected or torn duct sends heated air into the roof space instead of the room, so the system runs longer to warm the house. Fixing the leak puts that air back where you want it.
When do I pay?
After the job is done and you’ve seen the before & after photos. Cash, card or bank transfer.
What if I’m not happy?
Tell us. If something isn’t right, we come back and put it right — that’s our 100% satisfaction commitment.
Are your technicians insured and police-checked?
Yes. Police-checked technicians, NDIS Worker Screening checks, and full public liability and business insurance.
Duct guides & local pages
Ducts, heating & cooling
What a full duct replacement involves, step by step Air duct replacement guide Duct cleaning vs duct replacement Air duct cleaning across Melbourne Ducted heater replacement (the unit, not the ducts) Gas ducted heating to reverse cycle Duct cleaning after a renovation Before & after resultsGet your duct repair quote
Tell us what the system is doing — we call you back, inspect, and give you a firm quote before any work.
