One of the most common questions before buying a diffuser is simple: how much will it actually cost to keep running? The honest answer is that it depends on a few factors, but here’s how to think it through with real numbers.
What determines how long a bottle lasts
- Intensity setting: a higher intensity setting atomises more oil per hour than a lower one.
- Room size: a larger room generally needs a higher intensity setting to notice the scent, using oil faster than a small room at the same setting.
- Hours per day: running a diffuser for 4 hours a day will obviously make a bottle last roughly twice as long as running it for 8 hours a day at the same settings.
Because of these variables, Airmate doesn’t quote a single fixed “days per bottle” figure – anyone who does is making an assumption about your specific setup. What we can say from typical customer usage: most customers refill every 4–8 weeks at moderate daily use.
Real refill pricing
| Scent oil | Price | Used in |
|---|---|---|
| Standard scent oils (20 fragrances) | LKR 2,250 per bottle | All Airmate diffusers |
| Mango scent oil | LKR 3,990 per bottle | All Airmate diffusers |
| Hotel Collection (16 fragrances) | LKR 9,500 per 50ml bottle | All Airmate diffusers |
Diffuser bottle capacities
Your diffuser’s own bottle capacity also affects how often you’re swapping bottles (though not how long the fragrance lasts per ml of oil used): Home Mate holds 100ml, Core Mate 120ml, Lite Mate 150ml, Pro Mate 200ml, and Duo Mate holds two 50ml chambers that switch instantly between two scents.
Quick answer
How long does 100ml of oil last?
At moderate daily use (a few hours a day, medium intensity), most customers get 4–8 weeks from a 100ml bottle. Running continuously at high intensity in a large room will use it up noticeably faster; running briefly at low intensity in a small room will stretch it further.
How much does it cost to run a diffuser per month?
Using the 4–8 week range above and a standard LKR 2,250 scent oil, that works out to roughly LKR 1,100–2,250 a month for most households – use the lower end if you run it lightly, the higher end for heavier daily use.
Shop the full range of refill oils in Scent Oils and Hotel Collection.
