Cleanroom air changes
A reference for room volume, air changes and the questions behind an airflow decision.
Open the guide ↗READING EDITION
From the 360S learning librarySTART WITH YOUR ASSUMPTIONS
EDITION 01 / 12 · Start with the airflow brief
Put the airflow brief on one page.
Gather the room purpose, layout and airflow assumptions before your next review. Use the air-change guide to turn a broad discussion into a short list of questions.
Read the featured guide See the reading plan ↓One guide. One useful question. A reason to return.
FEATURED TOPICAirflow planning
Explore all 12 reading editions Choose your next question
Each edition brings a different review task to the existing guide library. Save its link to return to the same plan. Manufacturer placements follow their current campaign dates and the selected topic.
01 / Airflow planning
Start with the airflow brief
Open reading plan ↗
02 / HEPA, ULPA & FFU
Prepare a filter selection brief
Open reading plan ↗
03 / Room pressure
Map the room relationships
Open reading plan ↗
04 / Temperature & humidity
Build an operating-condition log
Open reading plan ↗05 / Airflow planning
Trace the supply and return paths
Open reading plan ↗06 / HEPA, ULPA & FFU
Review FFU service access
Open reading plan ↗07 / Room pressure
Review doors and transfer routes
Open reading plan ↗08 / Temperature & humidity
Document moisture observations
Open reading plan ↗09 / Airflow planning
Prepare a layout-change review
Open reading plan ↗10 / HEPA, ULPA & FFU
Prepare the filter handover record
Open reading plan ↗11 / Room pressure
Prepare a pressure-trend discussion
Open reading plan ↗12 / Temperature & humidity
Close the humidity review loop
Open reading plan ↗MAKE IT USEFUL
A small reading plan.
A practical next step.
Explore a reference, choose a tool and keep the useful links within reach.
Organise your airflow inputs
Open the tool library with your room information ready. Check the chosen tool’s inputs, units and limits before using a result.
Browse engineering tools ↗Make it easy to find again.
Sign in to My Workspace to save supported guide and tool links and revisit your reference shelf.
Open My Workspace ↗YOUR READING CHECKLIST
What will you take
back to your project?
Which assumption in your airflow brief has the least supporting information?
0 of 3 steps checked
Checkmarks stay on this page only. Print or save a PDF to keep a copy.Keep one useful outcome.
Keep a dated list of assumptions so the next review starts from the same information.
KEEP EXPLORING
Pressure cascade design
Continue with room relationships and the intended direction of airflow.
Open this reference ↗PRODUCTS & PEOPLE
Explore the supplier directory.
When reviewing supplier information, note which airflow data is supplied and which details still need clarification.
Browse suppliers ↗COME BACK WITH YOUR NEXT QUESTION
Next Monday: Document moisture observations.
The featured topic changes on 16 Nov 2026. Twelve reading editions rotate each Monday in Malaysia time, using existing 360S guides. The sequence repeats after 12 weeks.
Bookmark this week’s page ↗Learning references and preliminary planning tools. Follow the project requirements and the source guidance when applying what you read.