Appliance Spares
Quick answer: If your laundry smells damp and the cornices are going black over winter, the usual cause is a vented dryer discharging into the room instead of outside. A vented dryer moves the water out of your clothes and into the air — several litres a week — and in a closed Australian laundry that water lands on the coldest surfaces. Ducting it outside fixes the room. A perished lint filter makes it worse, because a restricted dryer runs longer and hotter for the same load.
Last updated August 2026
Where the damp is coming from
The catalogue spans 23 part categories across six appliance types, from door seals to defrost timers — but for a damp laundry the list of suspects is short, and airflow sits at the top of it.
| Source | How to tell | What fixes it |
|---|---|---|
| Vented dryer with no duct | The room is warm and steamy while the dryer runs | Duct to an outside vent or window; open the room up |
 Restricted dryer airflow | Cycles have got longer; the machine runs hot | A fresh lint filter and a clear duct run |
| Washing left in the machine | Sour smell rather than musty; worst at the door seal | Unload promptly; leave the door ajar |
| Front loader door seal holding water | Black spotting in the folds of the rubber | Wipe the fold dry; see the seal guide below |
| Drying clothes on an airer in a closed room | Windows stream with condensation overnight | Ventilate, or move the load to a ducted dryer |
Almost every damp-laundry complaint we hear resolves to one of those five, and the first two are the ones people miss because a dryer feels like a sealed appliance. It is not — a vented machine is a fan that blows warm wet air somewhere.
The physics, briefly, because it explains everything else
A normal load of washing carries roughly two litres of water after the spin. A vented dryer’s whole job is to evaporate that water and push it out with the exhaust air. If the exhaust goes outside, the water leaves the building. If it goes into the laundry, the water stays in the building and simply moves from your clothes to your walls.
Warm air holds more moisture than cold air, so that water travels invisibly until it meets something cold. In an Australian winter the cold things are the external wall, the window reveal, the ceiling corners and the back of any cupboard against an outside wall. That is where the mould appears, and it is why it comes back in the same spots every year no matter how often you scrub it.
A wall-mounted dryer sharpens the problem, because the outlet is now at face height rather than near the floor, and warm moist air rises. That is not an argument against wall mounting — it is an argument for ducting it properly at the same time, which is easier when the machine is up anyway.
Fix the airflow before you fix the room
A restricted dryer is a mould machine. When air cannot move through the drum, the cycle stretches, the machine runs hotter, and it spends far longer pumping moisture into the room for the same load of washing.
The lint filter is the first thing to check and the one most often left too long. Foam filters perish rather than clog: they stiffen, shrink at the edges and eventually tear, and once torn they let fluff past into the ducting and the element housing. Hold yours up to the light — if it has thinned or opened anywhere, replace it. The budget vented platform shares one filter across the Omega and Euromaid badges and another across the Stirling and Tempo range, while Haier vented machines take their own filter.
Then the duct. A hose folded hard against the wall behind the machine, or packed with years of lint, restricts as effectively as a blocked filter. If cycles have quietly got longer, work through dryer taking too long to dry before blaming the room. And if there is any smell of burning at all, stop and read dryer smells like burning first — lint around a hot element is a fire risk, not a ventilation problem.
Getting the water out of the room
- Duct the dryer to outside air. An external wall vent is the proper answer; a window kit is the common one. This single change removes several litres a week from the house.
- Add a door louvre at minimum. A sealed laundry with no air path recirculates the same saturated air, which also makes the dryer work harder.
- Run an exhaust fan during and after the cycle. The ten minutes after a load matters as much as the cycle itself.
- Leave the washer door and detergent drawer ajar. Both hold water; both grow mould in the dark.
- Wipe the door seal fold dry. The rubber lip on a front loader traps water where you cannot see it — the routine is in how to stop mould growing on a washing machine door seal.
For the wider household picture on ventilation and what different appliance classes draw, energy.gov.au publishes the guidance. If the room is small and the dryer is on the floor taking up half of it, the layout options are set out in fitting a washer and dryer into a small laundry, and the hardware for getting a vented machine off the floor is the Simpson, Westinghouse and Electrolux dryer wall mount bracket or the kit matched to your brand.
Frequently asked questions
My dryer is a condenser model. Can it still be making the room damp?
Much less so, because it collects the water rather than venting it. If a condenser dryer is steaming up the room, check that the container is seating properly and that the condenser filter is clean — a blocked one changes how the machine behaves.
Is it enough to just open the laundry door?
It spreads the moisture through the house rather than removing it, which usually moves the mould rather than stopping it. Air has to leave the building, not just the room.
The mould keeps coming back in the same corner. Why there?
Because that corner is the coldest surface in the room, usually an external wall or a spot behind furniture with no air movement. Reduce the moisture in the air and the corner stops collecting it.
Does a new lint filter really affect the room?
Yes, indirectly but substantially. A restricted dryer runs much longer per load, so it spends far more time pushing warm moist air into the laundry.
Can I vent the dryer into a bucket of water or a box?
No. Those arrangements catch lint, not moisture, and the water still ends up in the room. Duct it outside or use a machine that collects condensate.
How do I know if my dryer is vented or condenser?
If you empty a water container after a cycle, or the machine plumbs to a drain, it is a condenser or heat pump model. If it blows warm damp air out of a duct or a rear outlet with no tank anywhere, it is vented.
Get the right part first time
Photograph the model sticker inside your dryer door and run the code through the part finder, or send it to us and tell us how long your cycles have been taking. We will tell you whether it is the filter, the duct or the machine before you order anything. Same-day dispatch from Sydney’s Northern Beaches on orders placed before 12pm.
Disclaimer: this article is general information only and is provided without warranty of any kind. Appliance designs vary between models and production runs — always follow the manufacturer’s instructions, switch off and unplug the appliance before starting any work, and confirm parts against the model number on your appliance’s model sticker. Any repair is undertaken at your own risk and Oz Appliance Spares accepts no liability for injury, loss or damage arising from work performed after reading this guide, to the maximum extent permitted by law. If in doubt, use a qualified technician.
