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Kapisa Healthcare · Delhi NCR

Hospital HVAC Systems - Infection Control Begins With the Air Your Patients Breathe

Kapisa Healthcare designs, supplies, and installs infection-control-grade HVAC and air handling systems for operation theatres, ICUs, isolation rooms, NICUs, and general wards across Delhi NCR and India. Every system we install is commissioned to NABH-specified air change rates, pressure relationships, temperature, and humidity — with full documentation included.
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Why It's Different

Why Hospital HVAC Is Completely Different From Commercial Air Conditioning

A standard commercial air conditioning system cools and heats a space. A hospital HVAC system does something far more critical — it controls the movement of airborne pathogens, maintains sterile environments, prevents cross-contamination between zones, and keeps clinical environments within the precise temperature and humidity ranges that support patient recovery and surgical safety.
The difference between a positive-pressure OT and a negative-pressure isolation room is entirely determined by the HVAC system. Get it wrong and you compromise infection control across your entire facility. Get it right and your HVAC system becomes one of the most powerful infection-prevention tools in your hospital.
Kapisa Healthcare designs and installs hospital HVAC systems with this clinical understanding at the core of every decision.

Zone-by-Zone Specifications

The Right Air Environment for Every Clinical Zone

Each clinical zone has distinct NABH-specified requirements. Our systems are designed zone-by-zone — not as a blanket system applied across the whole hospital.

25 ACH total · Positive pressure · 18–24°C · 50–60% RH · HEPA H14

Modular Operation Theatre

Laminar airflow ceiling with HEPA H14 filtration maintaining ultraclean air quality in the surgical zone. Dedicated AHU with 100% fresh air supply. Positive pressure to prevent contaminated air entering from adjacent corridors.

15–20 ACH total · Positive pressure · 22–25°C · 40–60% RH · HEPA H13

ICU & Critical Care Unit

High air change rate with HEPA filtration maintaining a clean environment for immunocompromised patients. Positive pressure in general ICU bays, with the ability to switch individual isolation bays to negative pressure.

12 ACH minimum · Negative pressure · 22–26°C · 30–60% RH · HEPA H13

Isolation Rooms (Negative Pressure)

Negative pressure rooms for infectious patients — air flows inward from the corridor into the room and is exhausted directly to the outside via HEPA-filtered extract. Prevents airborne pathogens from spreading to other areas.

15 ACH minimum · Positive pressure · 24–26°C · 40–60% RH · Low velocity

NICU

Very low air velocity to avoid draught stress on premature infants. Precise temperature control with narrow tolerance bands. HEPA filtration and positive pressure to protect highly vulnerable neonatal patients.

10 ACH minimum · Negative pressure · 18–22°C · 35–60% RH

CSSD - Decontamination Zone

Negative pressure prevents contaminated air from the decontamination zone spreading to clean and sterile areas. Dedicated exhaust with HEPA filter. Kept cooler than assembly zone to reduce bacterial growth risk.

6–10 ACH · Neutral pressure · 22–26°C · 40–60% RH

General Wards & Corridors

Lower-specification HVAC for general ward areas, with adequate fresh air supply, temperature comfort, and humidity control. Systems designed to integrate with the higher-spec zones in a coherent whole-hospital air pressure hierarchy.

Complete Scope

Complete Hospital HVAC - From
AHU to Final Commissioning

01

Air Handling Units (AHUs)

Dedicated AHUs sized for each clinical zone — OT, ICU, isolation, NICU — with HEPA filtration, heating, cooling, and humidity control integrated.

02

HEPA Filtration Systems

H13 and H14 HEPA filters for critical zones — removing 99.95–99.995% of airborne particles including bacteria, fungal spores, and fine dust.

03

Laminar Airflow Ceilings

Unidirectional laminar airflow ceiling units for OTs — delivering clean air in a controlled downward flow over the surgical site.

04

Pressure Zoning & Controls

Positive and negative pressure zone design with pressure monitoring, alarms, and automatic control to maintain the correct pressure hierarchy throughout the hospital.

05

Ductwork Design & Installation

Hygienic ductwork fabricated from galvanised steel with internal cleaning access — designed to prevent microbial growth and allow periodic decontamination.

06

Temperature & Humidity Control

Zone-by-zone temperature and relative humidity control via BMS-integrated AHU systems — with local and central monitoring capability.

07

Ventilation for Isolation Rooms

Dedicated negative pressure isolation room ventilation with direct HEPA-filtered exhaust — meeting NABH and international infection control guidelines.

08

Exhaust & Extract Systems

Dedicated exhaust systems for CSSDs, dirty utilities, sluice rooms, and isolation rooms — preventing contaminated air recirculation.

09

Commissioning & Validation

Full HVAC commissioning including airflow measurement, pressure testing, particle counts, temperature mapping, and NABH documentation at handover.

Common Questions

Common Questions About
Hospital HVAC Systems

Standard AC controls temperature only. Hospital HVAC controls temperature, humidity, air change rates, pressure relationships between zones, filtration levels, and airflow direction — all simultaneously. Each clinical zone has distinct NABH-specified requirements that standard AC systems cannot meet.
NABH guidelines require a minimum of 25 air changes per hour (ACH) for operation theatres, with at least 5 ACH of fresh outside air. The OT must be maintained at positive pressure relative to adjacent corridors. Kapisa designs and commissions all OT HVAC systems to these specifications.
Yes — retrofit HVAC installations are common, particularly when hospitals are upgrading existing OTs or ICUs to NABH standards. Our engineers survey the existing building to design the most practical ductwork routes and AHU locations within the available space.
HVAC cost depends heavily on the number and types of clinical zones, building size, and specification. A single OT HVAC system typically starts from ₹8–15 lakhs. A whole-hospital HVAC system for a 50–100-bed facility typically ranges from ₹30–80 lakhs. Contact us for a site-specific estimate.
Yes. Kapisa offers Annual Maintenance Contracts (AMC) covering filter replacement, AHU servicing, duct inspection, pressure validation, and emergency callout for all hospital HVAC systems we install.

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