Which diffuser should you choose based on the size of your space?
Olfativa Guide Home · Updated August 19, 2026
Quick answer: The right diffuser is chosen primarily based on the volume of the space in cubic meters (m³), not just its area in square meters. Multiply the length by the width and height of the space; then, choose a unit whose listed coverage is equal to or greater than the actual volume.
Formula: length × width × height = volume in m³.
For example, a room that is 5 m long, 4 m wide, and 2.5 m high has a volume of 50 m³. If there are double-height spaces, open doors, constant ventilation, or multiple connected areas, be sure to take that airflow into account when selecting and programming the equipment.
Comparison of Olfativa diffusers by coverage
The coverage figures correspond to the specifications published by Olfativa Home. Square meters are shown only when the product also specifies them.
| Diffuser | Published coverage | Capacity | Guidance Center |
|---|---|---|---|
| Enzo | Up to 30 m³ | 10 ml | Car, desk, or personal space |
| Fitz | Up to 150 m³ / 50 m² | 120 ml | Bedroom, studio, or small room |
| Aspen | Up to 165 m³ / 60 m² | 180 ml | Medium-sized room or living area |
| Moai | 200–250 m³ / approx. 80 m² | 200 ml | Living room, office, or medium-sized room |
| Santorini Pro | Up to 300 m³ / 100 m² | 120 ml | Home, office, or medium-sized business |
| Montblanc | Up to 450 m³ | 150 ml | Spacious home or office space |
| Eiffel | Up to 1,500 m³ / 500 m² | 1,200 ml | Spacious home, business, or open space |
| Montblanc XL | Up to 1,500 m³ / 500 m² | 500 ml | Spacious home, business, or open space |
| Liberty | 1,500–2,000 m³ / up to 600 m² | 500 ml | Large-scale residential or commercial space |
| Empire | Up to 2,700 m³ / 900 m² | 1,000 ml | Large format |
| Ural | Up to 3,000 m³ / 1,000 m² | 800 ml | Large-scale project |
| Everest | Up to 5,000 m³ | 1,000 ml | A very spacious area |
How to Choose a Diffuser, Step by Step
1. Calculate the actual volume
Measure the length, width, and height. In open spaces, include the connected areas through which air flows. If the ceiling height varies, divide the space into sections and add up their volumes.
2. Check how the air circulates
Coverage does not depend solely on size. Open doors, ventilation, drafts, and the arrangement of furniture all affect sound dispersion. A divided space may require a different location or more than one speaker.
3. Choose the installation method
Surface-mounted units work well in enclosed areas. In large or interconnected spaces, a model compatible with the air distribution system can disperse the scent from a central location, provided the installation is suitable for the building.
4. Adjust the intensity gradually
More power doesn't always lead to a better experience. Start with a moderate setting, observe the results over several cycles, and adjust the intensity based on how the space is actually used.
Recommendations by Type of Space
- Car or personal space: Enzo.
- Bedroom, studio, or small room: Fitz or Aspen, depending on the calculated volume.
- Large room, office, or medium-sized business: Moai, Santorini Pro, or Montblanc.
- Spacious home or space of up to 1,500–2,000 m³: Eiffel, Montblanc XL, or Liberty.
- Large-scale project: Empire, Ural, or Everest, after validating distribution, height, and airflow.
The final selection should take into account the volume, air circulation, installation method, and desired intensity.
Frequently Asked Questions
Is it more important to measure in square meters or cubic meters?
Cubic meters are more accurate because they take height into account. Two spaces with the same floor area may require different equipment if one has a standard ceiling height and the other has double-height ceilings.
Is it a good idea to choose a diffuser with more coverage than you need?
Not necessarily. An oversized unit may require a very low setting. The important thing is that the coverage matches the volume and that the intensity can be adjusted in a controlled manner.
When is the best time to connect the diffuser to the air system?
It can be useful in large spaces or in spaces with several connected areas. Compatibility and installation depend on the model and the layout of the building.
Is the charging time the same in all charging stations?
No. It depends on the equipment, the programming, the hours of use, the intensity, and the conditions at the site. Check the capacity and recommendations in the specifications for each model.
Does the diffuser come with the scent?
The terms vary depending on the product or subscription. Before purchasing, check what's included in the selected option on its product page and in your cart.
What should I do if my space has a double-height ceiling?
Calculate the total volume using the actual height. If the space is connected to other areas or has constant foot traffic, ask for a recommendation before choosing the equipment.