Clean-Rooms
All Climate Heating & Cooling 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 filter
Class 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 air
Class 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 roomı
Gasket ceiling grid
Class 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 commonı
Class 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 applicationsı
Class 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 changes
For more information about how All Climate can help you with your clean-room or mechanical need please feel free to contact us.
All Climate Heating & Cooling: (763) 548-8095
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