Cleanroom HVAC design
Classification, airflow, pressurization and validation for controlled environments. 17 guides.
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- Air change rates and airflow in cleanrooms
Learn where typical cleanroom air change rates come from, how to derive airflow from contamination sources and recovery time, and why overdesigning airflow wastes energy.
- Cleanroom HVAC design: an overview
Learn the main building blocks of a cleanroom HVAC system and the decisions that set its cost, performance and energy use, from classification to commissioning.
- Cleanroom certification and testing
Learn which tests are performed to certify a cleanroom, in what order and how often, and how to read the results and respond to failures.
- Cleanroom energy efficiency
Learn where cleanroom energy goes and the proven measures, from airflow reduction to heat recovery, that lower operating cost while maintaining classification.
- Cleanroom pressurization cascades
Learn how pressure differentials keep contamination flowing in the right direction, how to choose airlock types, and how to calculate and control the airflow offsets that create the cascade.
- Cleanroom recovery and contamination control testing
Learn how recovery time, clean-up period, filter integrity, airflow visualization and containment leak tests are performed under ISO 14644-3, and how to read the results.
- Containment labs: BSL-2 and BSL-3 HVAC
Learn how HVAC requirements change from containment level 2 to level 3 under the Canadian Biosafety Standard, and how to design, control and verify inward airflow and HEPA exhaust.
- Fan filter units vs ducted HEPA systems
Learn how fan filter units and centrally ducted HEPA systems differ, and which factors decide the better choice for a given cleanroom size, class and budget.
- GMP cleanroom grades A to D
Learn how GMP grades A to D are defined for sterile manufacturing, how they relate to ISO classes, and what each grade means for HVAC design and monitoring.
- HEPA and ULPA filter systems
Learn how HEPA and ULPA filters are classified, how housings and seals affect performance, and how installed filters are leak tested and maintained.
- Hospital pharmacy compounding rooms (USP 797 and 800)
Learn how USP 797 and 800 and the NAPRA model standards shape HVAC design for hospital and community pharmacy compounding rooms, and what certification involves.
- ISO 14644 cleanroom classification explained
Learn how ISO 14644-1 cleanroom classes are defined, how to read the class limit table, and what a classification test involves under the 2015 edition.
- Modular cleanrooms
Learn the main types of modular cleanroom, how their HVAC systems work, and the code, building integration and testing questions owners should resolve before purchase.
- Pharmaceutical cleanroom HVAC
Learn how GMP requirements shape HVAC design for sterile and non-sterile pharmaceutical facilities, from contamination control strategy to qualification and ongoing monitoring.
- Semiconductor and electronics cleanrooms
Learn how semiconductor and electronics cleanrooms differ from pharmaceutical cleanrooms, and the HVAC systems that control particles, chemicals, temperature, humidity and static.
- Temperature and humidity control in cleanrooms
Learn why cleanrooms need tighter temperature and humidity control than most spaces, and how system architecture, dew point control and clean humidification deliver it.
- Unidirectional vs non-unidirectional airflow
Learn the difference between unidirectional and non-unidirectional cleanroom airflow, the design rules that make each work, and how to choose the right pattern for each zone.