

It can control cleanliness, temperature, and humidity levels more accurately, meeting the requirements of various production, inspection, and testing processes.


Since the air conditioning is applied only to a limited area, it can save energy and achieve highly precise temperature control.

It can increase or decrease humidity to maintain a constant humidity level, and can create low-humidity or high-humidity environments as needed.

Equipped with a newly developed compact temperature sensor with high directional accuracy. Temperature resolution is enhanced using a 14-bit A/D converter. Temperature data can be transmitted digitally via LAN stably, with improved resistance to external noise.
Maximum energy savings, reducing electricity consumption by up to 80%.

Focusing on humidification technology, Apiste has developed a new technology different from the traditional heater-based system, based on a new concept that integrates cooling, heating, and humidification processes within a single cooling cycle. It can control humidity with high accuracy of ±0.5% while achieving energy savings of up to 80%.
Multiple functions for high precision

Provides high stability and reliable control
The basic PID control program for general temperature regulation has been developed into a specialized program called “ISC” (Intelligent Sensing Control), which focuses on precision air conditioning control. A large amount of accumulated data has been used to develop the control algorithm. The overshoot behavior of conventional PID control has been significantly improved, resulting in unprecedented stability and control performance.

Newly developed high speed – processes at least 10 times faster than before. Hundreds of operational steps are processed simultaneously using dual processors, consisting of a high-speed CPU and a CPU with built-in 32-bit DSP. This significantly reduces the automatic tuning time. Even if the sample data is unstable due to noise, the system can quickly determine the optimal PID settings from the observed waveform.
You can choose between air-cooled or water-cooled methods depending on the purpose, application, and installation environment.


This method transfers heat during the cooling cycle using air cooling. Excess heat is expelled by a fan motor installed near the cooling coil. Installation is relatively simple since there is no need for water piping for heat transfer. (For models with a humidifier, piping is required for the humidification process.)


In these models, heat is transferred by cooling water during the cooling cycle. Compared to air-cooled systems, they have a higher heat transfer coefficient and greater stability, allowing operation across a wide range of airflow rates, from low (1 m³/min) to high (120 m³/min).
Since no excess heat is expelled by a fan motor, no dust is generated, making it ideal for environments that require a high level of cleanliness.
Supports a variety of air-cooling and installation methods.

Create an optimally clean environment by delivering precision-conditioned air from the PAU unit through a HEPA filter, providing highly purified clean air. Temperature, humidity, and cleanliness can be precisely controlled by selecting a clean air fan unit suitable for the target area size and the required cleanliness level.

Suitable for areas with large open spaces, or in cases where dust or organic solvent vapors are present within the target area.

Air is drawn back from the target area to be recirculated, with a variety of optional accessories available for the circulation system.
Multiple self-diagnosis functions with highly convenient operation.
Quickly check operating status at a glance.
The operating status is indicated by five high-brightness LEDs, allowing you to quickly monitor the status of each unit even from a distance. This enables immediate maintenance when an alert or malfunction occurs.
Prioritizing maximum visibility
it is equipped with a large 7-segment LED display with 10 mm character spacing, making it clearly visible even from a distance or in the dark. Additionally, the status can be checked without switching screens, thanks to the dual temperature and humidity display system, which shows the real-time status of the air conditioner along with a comprehensive self-diagnosis display function, covering all essential details for precision air conditioning.

There is a 12 mm gap above and below the set button, and the button height is 0.5 mm. It can be pressed smoothly with a clear click sensation, even while wearing cleanroom gloves or other protective gloves.
Equipped with a closed-pan type humidification unit, enabling precise humidity control.
Air-cooled and water-cooled precision air conditioners (TCU/ECU) come equipped with a closed-pan humidification unit. Apiste’s humidification unit generates fine and uniform mist, allowing for highly precise and stable humidity control.
- Closed Pan Structure

By generating an internal air circulation within the pan and allowing it to pass through baffles, fine mist can be produced. The fine mist from the humidification unit is thoroughly mixed with the temperature-controlled air inside the mixing box before being released.
- Open Pan Structure

By generating an internal air circulation within the pan and allowing it to pass through baffles, fine mist can be produced. The fine mist from the humidification unit is thoroughly mixed with the temperature-controlled air inside the mixing box before being released.
Newly developed humidification unit (installed in air-cooled air conditioners, Series A)
Apiste has developed a new humidification unit that can track the humidity curve linearly by detecting it through a humidity sensor, ensuring high-quality humidity control. This new closed-pan humidification unit features an advanced structural design, combining ease of maintenance with durability, as well as excellent responsiveness and stability.
In addition, usability has been greatly improved with unique functions such as a 2-level control function to prevent water droplets and uneven humidity from rapid humidification, an automatic blow-cleaning function to handle scale buildup, and more.
An automatic drain function is installed to handle scale buildup inside the humidification unit. Water with a high concentration of scale is drained from the unit, and the timing and intervals of drainage can be freely set. In addition, water inside the humidification unit that needs to be drained during maintenance can be discharged every 5 seconds by pressing the drain button on the control panel.

The humidifier unit can be fully removed from the air conditioner—simply pull and slide it forward from the back of the unit. This allows maintenance, adjustments, and part replacements to be performed on-site. In addition to demonstrating excellent scale management performance, it also significantly reduces the time and hassle required for maintenance.
Allows easy addition of chemicals to prevent scale buildup.
Enhances humidification performance with a high-efficiency heater that is resistant to insulation degradation, enabling stable and continuous humidity control.
The main components can be removed without tools, simply by using the latch lock.
Energy-Saving High-Precision / Standard Models
PAU-AZ1800SE (Air-Cooled | Temperature Control)
PAU-AZ3000SE (Air-Cooled | Temperature Control)
PAU-AZ7000SE (Air-Cooled | Temperature Control)
PAU-AZW8000SE (Water-Cooled | Temperature Control)
PAU-AZW8000SE-HC (Water-Cooled | Temperature and Humidity Control)
PAU-AZ2000SE-DR (Air-Cooled | Temperature and Humidity Control – Dehumidifying)
Standard Model Lineup
PAU-300S (Air-Cooled | Temperature Control)
PAU-AR800S (Air-Cooled | Temperature Control)
PAU-A920S-HC (Water-Cooled | Temperature and Humidity Control)
PAU-A1400S-HC (Water-Cooled | Temperature and Humidity Control)