Aromawave Editorial • Fragrance Oil Guide • Australia
There is no fixed schedule for changing fragrance oil in a cold air diffuser. You change it when the bottle runs out, when you want a different scent, or when you choose to switch between profiles for a different room or occasion.
All 27 Aromawave fragrance oils are available in 20ml ($29.99), 50ml ($52.99), 120ml ($97.99), and 500ml ($239.99). At 8 hours per day at level 3, a 20ml bottle lasts 2 to 4 weeks. Shop the full Aromawave fragrance oil collection from $29.99. Free tracked Australia Post delivery on orders over $99 from Aromawave. ABN 70 681 300 363.
How often do you need to change fragrance oil in a diffuser?
A cold air scent diffuser does not require fragrance oil changes on any set schedule. The oil is drawn down gradually over time through the atomisation process. You add more oil when the level runs low or the bottle runs out, and you change to a different oil only when you want a different scent.
Most Australian households running their diffuser for 6 to 8 hours per day will use one 20ml bottle every 2 to 4 weeks at intensity level 3. At that rate, changing oil means topping up or replacing the bottle approximately once or twice a month. Households using a 120ml or 500ml bottle will go considerably longer between changes. For a full guide to how daily run time affects oil consumption, see the cold air diffuser run time guide.
When should you change the fragrance oil in your diffuser?
There are three common situations where you would change the fragrance oil in your cold air diffuser. Each has a slightly different approach depending on whether you are switching scents or simply refilling the same oil. For a full guide to selecting oils for different rooms and occasions, see the how to choose a fragrance oil guide.
How do you switch fragrance oils in a cold air diffuser?
Switching between fragrance oils in a cold air diffuser is straightforward. The key consideration is allowing the previous oil to run down before adding a new profile, to avoid an unintended blend of the two scents. For a guide to how the Bluetooth scheduling feature can help manage diffuser run time and oil consumption, see the cold air diffuser run time guide.
How long does fragrance oil last in a cold air diffuser?
How long a bottle of fragrance oil lasts depends on the size of the bottle, the daily run time, and the intensity setting. The figures below are estimated ranges based on 8 hours of daily use at intensity level 3. Running fewer hours per day or at a lower intensity setting will extend these estimates. Using the Bluetooth app scheduling feature to run the diffuser only during occupied hours is the most practical way to extend oil life without changing the experience. For a full guide to fragrance oil sizing across different usage patterns, see the fragrance oil for cold air diffuser guide.
All 27 Aromawave fragrance oils are available in 20ml, 50ml, 120ml, and 500ml. Starting with a 20ml ($29.99) is the practical approach when trying a new scent profile for the first time. Once confirmed for your space, the 120ml ($97.99) suits everyday ongoing use well. Shop the full Aromawave fragrance oil collection.
There is no set schedule. You change fragrance oil in a cold air diffuser when the oil bottle runs low, when you want to switch to a different scent, or when the bottle runs out. Most households running 6 to 8 hours per day will use one 20ml bottle every 2 to 4 weeks and one 120ml bottle every 2 to 3 months at intensity level 3.
You can add a new Aromawave fragrance oil on top of a small residual amount of the previous oil. A small carry-over between the two scents is normal. Running the diffuser for a short period after adding the new oil helps the new scent come through. For a clean switch between distinct scent profiles, run the existing oil down to as low a level as practical before adding the new oil.
At 8 hours per day at intensity level 3, a 20ml Aromawave fragrance oil ($29.99) lasts approximately 2 to 4 weeks. Running fewer hours per day or at a lower intensity extends this range. The 20ml size is the right starting point for any oil being used in a new space for the first time.
At 8 hours per day at intensity level 3, a 120ml Aromawave fragrance oil ($97.99) lasts approximately 2 to 3 months. At that volume it suits most everyday household use in a main living area. Using the Bluetooth scheduling feature to run the diffuser only during occupied hours extends this range further.
A light wipe of the oil bottle is a practical step when switching between very different scent profiles. For oils of a similar character, many users find no wipe is needed between changes.
The 20ml size ($29.99) suits households that like to rotate between scents regularly, as it reaches the end of a bottle in 2 to 4 weeks, providing a natural switching point. Once you have confirmed a signature scent for a specific space, the 120ml ($97.99) or 500ml ($239.99) offers better value per ml for ongoing use. Shop the full Aromawave fragrance oil collection.
Yes. Fragrance oil can remain in the Aromawave cold air diffuser between uses. The oil does not need to be removed when the diffuser is turned off. Using the Bluetooth scheduling feature means the device turns on and off automatically at set times, with the oil remaining in the diffuser throughout.
Aromawave fragrance oils are available in four sizes: 20ml at $29.99, 50ml at $52.99, 120ml at $97.99, and 500ml at $239.99. All 27 oils across the hotel inspired, wellness edition, and perfume inspired collections are the same price per size. Free tracked Australia Post delivery on orders over $99. Shop the Aromawave fragrance oil collection.
Aromawave brings together hotel-inspired fragrance oils, advanced cold air diffuser technology, and luxury car scent diffusers for those who value elegant, refined fragrance. From private interiors to hospitality and retail spaces, every scent is designed to leave a lasting impression.
27 fragrance oils from $29.99 • Phthalate-free • IFRA compliant guidelines • Vegan
Wireless Ultra Smart Scent Diffuser $249 (was $349) • Ultra Pro Scent Diffuser $199 (was $299)
Free tracked delivery on orders over $99 • Australia Post • 30-day returns • Aromawave
Free AU shipping on orders over $99 • 30-day returns • 12-month warranty • ABN 70 681 300 363
Aromawave™ is an independent brand and is neither affiliated with, authorised by, nor endorsed by any hotel, perfume brand, fragrance house, or their respective affiliates. Any third-party brand names are referenced solely for descriptive and comparative purposes to indicate fragrance inspiration, and all trademarks remain the exclusive property of their respective owners.
