An air handler in HVAC, also known as an air handling unit (AHU),
is a crucial component of any Heating, Ventilation, and Air
Conditioning system.
A hospital air handling unit (AHU) is a critical part of the HVAC system that conditions and
circulates air to maintain safety, health, and comfort for patients
and staff. Hospitals require specialized AHUs with features like
HEPA filters for infection control, precise temperature and
humidity control for different zones (e.g., operating rooms versus
patient rooms), appropriate pressure relationships (positive for
clean areas, negative for isolation rooms), high air changeover
rates, and built-in redundancy to prevent system failures.
The JTAHM series of medical clean air conditioning units is
developed in accordance with the requirements of the “Technical
Code for Hospital Clean Operating Department” the “Code for
Construction and Acceptance of Cleanrooms” and the “Air Handling
Units for Clean Operating Rooms”.
The air volume handled by the unit ranges from 2,600 m³/h to 40,000 m³/h, allowing customized selection for different clean room
requirements.The unit has two major series: the mixed air type( R
series )and the fresh air type (F series).
Key Functions and Requirements
Infection Control: AHUs remove airborne contaminants using filters
(like MERV-14 or higher, or HEPA) and control airflow patterns to
prevent the spread of bacteria and viruses.
Air Quality: They filter out harmful particulates, ensuring high
air quality for patients, visitors, and staff.
Temperature and Humidity Control: AHUs maintain precise
temperatures and humidity levels, which are crucial for patient
comfort, medical equipment functioning, and preventing the growth
of pathogens.
Airflow and Pressure: Hospitals need different pressure levels for
various zones; clean areas like operating rooms require positive
pressure, while infectious isolation rooms need negative pressure
to contain airborne contaminants.
Air Changeover Rates: Critical areas require specific, high air
changeover rates to rapidly remove air contaminants.
Examples of Critical Hospital Areas and Their AHU Needs
Operating Rooms: Require high-efficiency filtration, positive
pressure, and precise temperature and humidity control.
Infection Isolation Rooms: Need negative pressure to contain
airborne diseases, along with appropriate filtration to remove
pathogens before exhausting air.
Patient Rooms: Require comfortable temperature and humidity, along
with good ventilation to support healing and staff safety.
Successful cases
