Indoor air quality
Practical measure of how healthy, comfortable, and usable indoor air feels for occupants.
What shapes indoor air quality
IAQ depends on fresh-air strategy, moisture control, filtration, equipment cleanliness, and how the building is actually operated. In tropical projects, humidity and maintenance discipline matter as much as the original design concept.
Why IAQ affects budget planning
Better air quality usually requires more than bigger equipment. It can expand the scope for ducts, filters, access panels, controls, balancing, and training at handover. Ignoring those dependencies leads to premium claims with low operational value.
Typical failure pattern
- The project installs better ventilation hardware but provides weak maintenance access.
- Occupants inherit complex controls without training.
- Commissioning proves startup only, not sustained air quality performance.
What to ask before sign-off
- How is fresh air introduced and verified?
- How are filters accessed and maintained?
- What evidence shows the system is operating as intended after commissioning?
Used in project stages
Explore in the product
- Engineering finishes: Stage guide 路 Checklist 路 Mistakes and cost
- Commissioning & testing: Stage guide 路 Checklist 路 Mistakes and cost
- Handover & close-out: Stage guide 路 Checklist 路 Mistakes and cost
See also
Related cost packages
-
ST4-ENG-FRESH-008Fresh-air / ERV rough-in -
ST10-COMM-AIR-008Airflow balancing & ventilation verification -
ST11-HND-TRAIN-005Operations training