Operation Theatre HVAC Systems
Surgical Environment Infection Control
System Overview
Operation Theatre HVAC systems are specialized air conditioning and ventilation solutions designed to prevent surgical site infections and maintain optimal conditions for surgical teams and patients. These systems incorporate laminar airflow (unidirectional) with HEPA H14 filters to provide ultraclean air over the surgical site. Key requirements include 20-30 air changes per hour, positive pressure (15-25 Pa) relative to adjacent areas, temperature control (18-24°C ±1°C), and humidity control (40-60%). OT HVAC complies with international standards including NABH, JCI, NHS, and DIN 1946-4, ensuring patient safety and surgical success.
Key Features
Laminar airflow (unidirectional) over surgical zone
HEPA H14 filtration (99.995% efficiency)
20-30 air changes per hour
Positive pressure (15-25 Pa) relative to adjacent
Temperature control: 18-24°C ±1°C
Humidity control: 40-60% RH
Ultraviolet germicidal irradiation (UVGI) option
Redundant AHUs for critical care
Low turbulence displacement ventilation
Differential pressure monitoring and alarms
Key Benefits
- Prevents post-operative surgical site infections
- Surgeon and patient thermal comfort
- Complies with NABH / JCI accreditation standards
- Reduces airborne bacteria and particles
- 24/7 reliability with backup systems
- Lower infection rates and hospital costs
- Improved surgical outcomes
- Auditable environmental parameters
Technical Specifications
ISO Class: 5 to 7 (surgical zone)
HEPA: H14 (99.995% @ MPPS)
Air Changes: 20-30 ACH (minimum)
Temperature: 18-24°C ±1°C
Humidity: 40-60% RH
Pressure: +15 to +25 Pa relative
Air Velocity: 0.2-0.4 m/s (laminar)
Standards: NABH, JCI, DIN 1946-4
Ideal Applications
Major Operation Theatres (Class A/B)
Emergency OT / Minor OT
Cardiac Surgery Suites
Orthopedic Surgery OT
Transplant Surgery OT
Burn Units
ICU (Intensive Care Units)
Isolation Rooms (Negative Pressure)