Key points
No heat, no water
Fragrance oil is broken into a very fine dry mist using air pressure.
The whole fragrance
Every note is released together, so the scent smells as composed.
Controllable
Output is set by schedule and intensity for each zone.
How cold-air diffusion works
Cold-air diffusion, also called nebulising or dry-air diffusion, uses compressed air to break fragrance oil into microscopic particles. The particles are light enough to stay suspended and travel with the air, spreading the scent evenly without heat, water or residue.
Because nothing is heated, the fragrance is not altered, and all of its notes are released together. That makes cold-air diffusion the method of choice for fine fragrance in commercial buildings.
Compared with other methods
Heated diffusers can change a fragrance’s character. Water-based humidifier diffusers dilute it and add moisture. Passive methods such as reeds are too weak for commercial spaces. Cold-air diffusion avoids all three problems.
Why it suits commercial buildings
Cold-air diffusion meets the demands of large, occupied spaces. Applied through HVAC and ACMV scent systems. See HVAC vs standalone diffusers.
Even dispersion through large air volumes
Works standalone or connected to HVAC and ACMV
Precise control of intensity and schedule
No heat, water or visible vapour
How it is deployed
Cold-air diffusion is specified for each zone.
Size the system
Capacity is matched to the air volume of each zone.
Choose placement
Standalone units or HVAC connection, depending on the space.
Calibrate
Intensity and schedules are set on site and adjusted through our managed service.
Frequently asked questions
1. Is cold-air diffusion the same as nebulising?
Yes. Both terms describe breaking fragrance oil into a fine dry mist with air pressure.
2. Does it leave residue?
Correctly specified and calibrated, the micro-mist disperses without visible residue.
3. Is it quiet?
Commercial units are designed for occupied spaces and are placed to minimise noise.
4. Can it connect to air-conditioning?
Yes. See HVAC and ACMV scent systems.
5. Does it use more fragrance?
It uses fragrance efficiently, because output is controlled precisely.
6. Who maintains the diffusers?
Equal Strategy’s technicians. A client never touches a diffuser.
Get started
Even scent without compromise
Request a site assessment and we will specify cold-air diffusion for your building.