Overview

Airtho partnered with a glass manufacturing facility to design and deliver a controlled cleanroom environment supporting a high-precision Diptech glass-printing process. The project required a modular ISO 8 system with reliable airflow, temperature control, and pressurization. To achieve the manufacturer’s strict environmental requirements, Airtho engineered a fully integrated solution combining HEPA filtration, recirculation airflow, and a high-capacity VRF cooling system.

Challenge

The client needed a cleanroom capable of maintaining consistent ISO 8 performance while housing a Diptech printer that generated significant heat and required stable temperature and humidity levels. Additional challenges included:

• Operating inside a larger warehouse with uncontrolled ambient conditions

• Managing high heat load of over 109,000 BTU/hr

• Providing 8 ACH of fresh makeup air

• Achieving stable temperature (68°F ±2°F) and humidity (50% ±10%)

• Integrating a ceiling-supported HEPA system within an existing building structure

Solution

Airtho engineered a cleanroom system optimized for airflow performance, thermal stability, and seamless facility integration:

• High-Efficiency Airflow Design: Airtho supplied a ducted HEPA recirculation system using an Airtho Cell Fan Kit tied into multiple 2×4 and 2×2 HEPA modules.

  • Delivered 20+ air changes per hour in the main room

  • Maintained ISO 8 cleanliness with a low-wall return system

  • Integrated pre-filtered recirculation to enhance efficiency

• VRF Cooling & Makeup Air System: To handle the printer’s heat load and required makeup air, Airtho provided a 6-ton Fujitsu VRF system consisting of indoor and outdoor units with ducted supply.

  • Sized for 109,438 BTU/hr thermal load

  • Provided both cooling and humidity control

  • Installed with insulated ductwork per the approved mechanical layout

• Intelligrid™ Ceiling System: The cleanroom ceiling was constructed using Airtho’s engineered Intelligrid™ system:

  • Suspended LD grid designed under IBC 2015 and aluminum structural standards

  • Supported HEPA filters, LED lighting, and blank panels

  • Provided a clean, modular platform for integrating mechanical distribution

• Fully Engineered Cleanroom Package: Airtho delivered a complete engineering and submittal package including:

  • Mechanical airflow calculations

  • Ceiling and ductwork layouts (Sheets 1–7)

  • Structural loading for all ceiling-mounted equipment

  • Environmental performance parameters across three connected rooms

Results

• Stable ISO 8 cleanroom performance supporting Diptech printer accuracy

• Reliable temperature and humidity control with a high-capacity VRF system

• Efficient recirculation system delivering 20 ACH in the main room

• Fresh air integration achieving 8 ACH, meeting equipment requirements

• Modular Intelligrid™ system enabling clean, maintainable overhead infrastructure