100% Waterless — No dilution, no mess
CH122 Powerful Wall Mounted / Standing Free Aroma Diffuser | Connect to HVAC System | 500ml Metal Cold Air Fragrance Machine | Covers up to 3000m³
CH122 Powerful Wall Mounted / Standing Free Aroma Diffuser | Connect to HVAC System | 500ml Metal Cold Air Fragrance Machine | Covers up to 3000m³
The CH122 Cold Air Fragrance Machine is a high-performance 3000m³ aroma diffuser designed for hotels, malls, offices, showrooms, airports, and large commercial spaces. Featuring 500ml capacity, durable metal shell, HVAC compatibility, Bluetooth/WiFi smart control, and powerful built-in fan, this waterless essential oil diffuser delivers consistent and luxurious scenting with low noise and long-lasting durability.
Products Lineup
Products Lineup
We are the cold air fragrance machine manufacturer in China.
Detailed Product Description
The CH122 Commercial Cold Air Fragrance Machine is engineered for large-scale scenting with advanced cold-air nebulizing technology that
The CH122 Commercial Cold Air Fragrance Machine is engineered for large-scale scenting with advanced cold-air nebulizing technology that
transforms essential oils into micro-fine particles for superior diffusion without heat or water. With a durable full-metal exterior, 500ml essential oil bottle, wall mount or free-standing installation, and HVAC integration, the CH122 is perfect for high-traffic environments that demand stable, continuous scent performance.
A high-power internal fan increases scent spread, while Bluetooth and WiFi smart control allow full customization of timing, intensity, and scheduling from any smart device.
Ideal for hotel lobbies, commercial buildings, office floors, retail shops, entertainment venues, and large residential spaces.

This model is widely used by:
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5 star hotels
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Cleaning and facility service providers

This model is widely used by:
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Cleaning companies
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Scent marketing companies
OEM/ODM Customization Options
Technical Specifications
| Feature | Details |
|---|---|
| Model | CH122 Cold Air Fragrance Machine |
| Technology | Cold-Air Nebulization |
| Application Area | Up to 3000m³ with Built-in inner fan |
| Power Mode | Adapter DC12 12W 1.5A |
| Bottle Capacity | 500ml |
| Material | Metal housing |
| Noise Level | < 38 dB |
| Working Time | Adjustable working days and working time |
| Scent Intensity Levels | Spray time could be adjustable from 1-480 seconds,
Pause time could be adjustable from 60-900 seconds |
| Installation | Wall Mounted / Standing Free / HVAC connection |
| Accessories | Power adapter, wall bracket, manual, connect to HVAC system set |
| Control Way | Bluetooth , WiFi smart control , and 4 press buttons manual control |
| Security | Anti-theft key lock |
CH122 Cold Air Fragrance Machine — Frequently Asked Questions (FAQ)
1. What area size can the CH122 scent diffuser cover?
The CH122 is designed for large commercial and residential spaces, effectively covering up to 3000 cubic meters. It is ideal for hotels, office buildings, malls, showrooms, lobbies, and large homes.
2. Does the CH122 use heat or water?
No. The CH122 uses waterless cold-air nebulizing technology, which preserves the purity, intensity, and longevity of the fragrance without using heat or adding water.
3. Can the CH122 connect to an HVAC system?
Yes. The CH122 supports direct HVAC/duct system connection, making it suitable for whole-building scenting in commercial environments.
4. What material is the CH122 made from?
The exterior is crafted from durable metal, providing long-term stability, professional-grade performance, and improved safety for high-traffic locations.
5. Is the CH122 wall-mounted or standing?
Both. The CH122 can be:
- Wall-mounted for permanent commercial installations
- Standing/free placement for flexible deployment
- Connected to HVAC for centralized scenting
This makes it one of the most versatile systems on the market.
6. How is the CH122 controlled?
It offers Bluetooth and WiFi smart control, allowing users to manage:
- Scent intensity
- Working schedules
- Operating modes
- On/Off timing
- All via mobile APP.
7. What size essential oil bottle does it use?
The CH122 includes a 500ml large-capacity bottle, suitable for long hours of uninterrupted use, reducing refill frequency in busy commercial environments.
8. Does the CH122 produce loud noise?
No. Even with its built-in high-power fan, the CH122 operates with low noise, making it perfect for hotel lobbies, offices, retail spaces, and high-end environments where quiet operation is required.
9. What type of oils can be used with the CH122?
It is compatible with:
- 100% pure essential oils
- Premium aroma oil blends
- Do not use water-based or alcohol-heavy fragrances.
10. Does the CH122 require professional installation?
- For HVAC connection, professional installation is recommended.
- For wall-mounted or standing use, installation is simple and can be completed by retailers or end users.
11. How often does the 500ml bottle need to be refilled?
This depends on intensity settings. On standard commercial use, a 500ml bottle may last 2–6 weeks, depending on environment size and schedule.
12. Is the CH122 suitable for continuous 24/7 operation?
Yes. The machine is built for long-term commercial use and can operate 24/7 with programmed cycles for energy and oil savings.
13. Does it have anti-theft or lock features?
Yes. The CH122 includes safe-lock protection to prevent unauthorized access, ideal for public and commercial installations.
14. Can I program different schedules for different days?
Yes. The Bluetooth/WiFi APP allows multi-day scheduling, including customizing operating periods and fragrance intensity.
15. What makes the CH122 ideal for wholesale buyers?
- High demand for 3000m³ space coverage
- HVAC compatibility
- Durable metal body
- Smart control technology
- Large 500ml capacity
- Flexible installation method
- It meets commercial buyers’ requirements, making it easy to resell globally.




