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Contributor
CLEANROOMS DOWN TO A SCIENCE
By Ryan Rennie, from the Spada-Rennie Group
Designing pharma‐grade HVAC for African conditions
Tailoring cleanroom HVAC systems for GMP compliance in South Africa’ s unique climate demands more than textbook design— it requires ingenuity, precision and local expertise.
In pharmaceutical manufacturing, HVAC systems are more than just a comfort feature— they are a critical component of product quality and patient safety. Whether you ' re making tablets, biologics or sterile injectables, the air inside your facility can mean the difference between regulatory approval and costly shutdowns.
South Africa, like much of the African continent, faces unique climate, power and infrastructure challenges that make pharmaceutical HVAC design more complex than simply following international guidelines. Designing a compliant, reliable system here requires both deep technical knowledge and strong local insight.
UNDERSTANDING THE SA CHALLENGE South Africa’ s diverse climate zones— from the humid coastlines of Durban to the dry heat of Limpopo— demand adaptable HVAC solutions. In cleanrooms, where temperature and humidity directly affect product stability and microbial growth, outdoor air conditions must be carefully managed.
A more pressing challenge, however, is power stability. Loadshedding is not just inconvenient— it threatens HVAC continuity, risking product loss or deviation from validated states. As a result, many facilities must over-specify redundancy in both power and HVAC components, increasing capital costs but protecting against catastrophic failure.
Another often overlooked challenge is access to trained local installers and commissioning agents familiar with GMPgrade systems. Improper installation or balancing can undo even the best design.
Ryan Rennie, from the Spada-Rennie Group.
Supplied by Ryan Rennie
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RACA Journal I September 2025 www. refrigerationandaircon. co. za