Description
That musty smell when the air-con starts?
In many larger homes and light-commercial spaces, air travels through metres of flexible ducting before it reaches the room. Over time, dust settles into the convolutions of the duct bore — and where there’s dust and a bit of condensation, mould has what it needs. The result is the stale, musty note a lot of people notice when the system first kicks on.
There can be other causes, and it’s worth ruling out the obvious ones. But if the smell arrives with the air conditioning and fades when it’s off, the ductwork is a reasonable place to look.
Why cleaning and a UV lamp don’t fully solve it
The inner core of flexible duct is a thin polyester film laminate bonded around a steel wire helix. It’s thin enough that manufacturers and NADCA both caution against aggressive brushing or air-whipping — and on a run buried in a ceiling you often can’t get equipment to it at all.
A germicidal lamp only works in its direct line of sight. Any bend, any shadow, and the light doesn’t reach. It treats the air passing the unit, not the metres of duct downstream.
The InDuct treats the air that travels through it
The BioZone InDuct fits inside the ductwork. A specialist UV lamp reacts with the oxygen and water vapour already in the passing air to create photoplasma — a short-lived, reactive mix of hydroxyl radicals, oxygen singlets, ions and a minimal amount of ozone.
That mix is then carried by your system’s own airflow to every surface downstream — around bends, along the liner, and out to each room grille.
Odours and VOCs — broken down, not masked
Plug-ins, sprays and scented filters add fragrance on top of a smell; the compound is still circulating. Photoplasma oxidises odour molecules and volatile organic compounds directly as the air passes through.
| Everyday odours | VOCs & chemical gases |
|---|---|
| Musty and damp smells Cooking odours — fried food, curry, fish Pet and litter-tray odours Bathroom and laundry smells on the return air Cigarette smoke residue |
Formaldehyde — new carpet, cabinetry, engineered timber Off-gassing from fresh paint and furniture Cleaning-product and aerosol residues Benzene and related compounds Ammonia and hydrogen sulfide |
What the ID-60 covers
The ID-60 is our large-capacity model — for bigger homes, dual-system homes, high-ceiling open-plan builds, and light-commercial spaces with substantial ducted airflow. Coverage below is the maximum floor area treated at a given nominal ozone concentration.
| Nominal ozone concentration | Max coverage |
|---|---|
| 0.007 ppm | 1,500 m² |
| 0.013 ppm (typical setting) | 850 m² |
| 0.020 ppm | 565 m² |
| 0.050 ppm | 234 m² |
Ceiling height and how strong the problem is also factor in. Not sure? Tell us about your system and we’ll size it for you.
Specifications
| Dimensions (L×W×H) | 200 × 100 × 76 mm |
| PhotoPlasma lamp length | 279 mm |
| Weight | 730 g |
| Power adapter | 12 VDC, 2.0 A |
| Power inlet | 110–240 VAC, 50–60 Hz · 2.5 m cord |
| Power consumption | < 30 W |
| Operating temperature | −20 °C to +40 °C |
| Humidity | 0–90% RH, non-condensing |
| Lamp shelf life / lamp life | 3 years shelf life · 1 year lamp life (annual change) |
Fitting is a straightforward job
A qualified installer cuts a single 70 mm hole in the duct, fits the rubber seal ring, and secures the unit against the duct wall. Six steps, no ceilings opened, no ductwork replaced. A single lead runs to a standard outlet.
After that it looks after itself — one moving part (the fan), one consumable (the lamp, changed annually), running continuously in the background.
Larger or multi-system building?
Bigger spaces sometimes need more than one unit, or a mix of models across separate air handlers. Tell us the floor area, ceiling height and how the system is zoned, and we’ll work out what suits — and arrange a qualified installer.
Talk to us today
07 3705 5995 · info@australianuv.com.au
Important · please read. The BioZone InDuct provides ongoing air disinfection and odour control — it helps suppress and reduce the airborne odour and microbial load in the treated air. It does not sterilise a building and is not a substitute for normal cleaning and ventilation; results vary with the size of the space, airflow, humidity and how the system is used. The unit produces only minimal, low-level ozone as a by-product and is designed to operate within the Safe Work Australia workplace exposure guidance for ozone; it must be installed by a qualified person. This is general product information and not a guarantee of a specific outcome; final model selection follows a review of your system.
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