Discipline 03

HVAC & air handling

AHU-wise ducting, supply and return balancing, pressure cascades and area classification.

AHU-wise ducting, supply and return balancing, pressure cascades and area classification that hold cleanliness grades reliably and economically.

  1. 01Architecture
  2. 02HVACDucting, terminals, dampers(this discipline)
  3. 03Electrical
  4. 04Utilities / Plumbing
  5. 05Fire Fighting
  6. 06Cleanrooms
  7. 07Automation / BMS
  8. 08Process Equipments
Where this discipline sits in the facility model

HVAC & contamination control

The heart of a GMP facility.

HVAC holds cleanliness grades, temperature, humidity and pressure, and it is the largest energy load in the plant. We design it to be compliant, stable and economical to run.

GradeTypical useDesign approach
Grade ACritical zone where sterile product is exposedUnidirectional airflow (UDAF) over the open product, within a Grade B room
Grade BBackground to Grade A, e.g. aseptic filling roomHigh air-change rates, terminal HEPA filtration, strict gowning
Grade CLess critical sterile steps, e.g. solution prepTurbulent flow with HEPA supply, positive to Grade D
Grade DClean support areas and less critical stagesFiltered supply, controlled temperature and humidity
  • Area classification

    ISO 14644 and EU GMP Annex 1 grades set early and confirmed in basic design.

  • AHU-wise zoning

    Each system serves a coherent group of rooms, simplifying balancing and qualification.

  • Monitored & controlled

    Differential pressure, temperature and humidity tied into the BMS from day one.

Illustrative air-handling unit arrangement showing staged filtration, conditioning coils, terminal HEPA supply and the return air path back to the unit.
Illustrative AHU arrangement: staged filtration, conditioning, terminal HEPA supply and return air to the unit.

Let’s design it right.

From the first concept sketch to an issued-for-construction package, Agon designs pharmaceutical facilities that meet the highest international standards. We would welcome the conversation.