Clean-Rooms
All Climate Mechanical has designed, installed and serviced HVAC systems for clean-rooms. We do not install your clean-room structures we leave that to the clean-room manufacturer. We install, repair and maintain the cooling, humidifying, static pressure and exhaust systems to ensure a consistent, reliable environment for your R&D or products.
We have worked with soft wall and hard wall clean-rooms, RO and DI water systems, Desiccant dehumidifiers, electric humidifiers, ultrasonic humidifiers, Pneumatic and DDC controls.
What class clean room do you need?
Class limits (maximum allowable particles)
| ISO | FED STD 209 | 0.1 µm | 0.2 µm | 0.3 µm | 0.5 µm | 5.0 µm |
| CLASS 3 | 1 | 1000 / 35 | 35 / 1 | |||
| CLASS 4 | 10 | 10,000 / 345 | 75 | 30 | 352 / 10 | 0 |
| CLASS 5 | 100 | 100,000 / 3,450 | 750 | 300 | 3520 / 100 | 0 |
| CLASS 6 | 1,000 | 1,000,000 / 34,50 | N/A | N/A | 35,200 / 1,000 | 7 |
| CLASS 7 | 10,000 | 345,000 | N/A | N/A | 352,000 / 10,000 | 70 |
| CLASS 8 | 100,000 | 3,450,00 | N/A | N/A | 3,520,000 / 100,000 | 700 |
ISO 14644-1 (per cubic meter)
Fed Std. 209 E USA (per cubic foot)
ISO standard requires results to be shown in cubic meters (1 cubic meter = 35.314 cubic feet)
Class 1
- 540 to 600+ air changes per hour (98%+ ceiling coverage)
- ULPA filters (99.9995% on .12 microns)
- Gel/Flush grid ceiling systems with raised floors are required
- Outside/makeup air to be pre-filtered with a HEPA filterClass 10
- 540 to 600 air changes per hour (85-90% ceiling coverage)
- 99.999% on 0.3 microns, with a raised floors
- 90%+ coverage with low wall returns
- Gasket grids with negative plenums acceptable
- HEPA filters on makeup airClass 100
- 400 to 480 air changes per hour (60-80% ceiling coverage)
- 99.99% HEPA filters
- Raised floor assures optimal performance. Low wall returns work when they are no further than 12′ from the center of the room¹
- Gasket ceiling gridClass 1,000
- 120 to 150 air changes per hour (40-50% ceiling coverage)
- 99.99% HEPA filter
- Gasket ceiling grid
- Raised floor delivers best performance, but low wall returns are very common¹Class 10,000
- 45 to 60 air changes per hour (10-20% ceiling coverage)
- 99.97% or 99.99% HEPAs
- Low wall or ceiling returns acceptable in most applications¹Class 100,000
- 20 to 30 air changes per hour (5% ceiling coverage)
- HEPA filters or 95% HEPAs (95%+ ASHRAE box filters²) located downstream of the HVAC unit
- Heat load may require more air changesFor more information about how All Climate can help you with your clean-room or mechanical need please feel free to contact us.