Inspection, Testing, and Verification Methods for WELL Features
What the exam tests
This domain asks how WELL claims are verified in the field. Expect questions on sampling, instrument calibration, timing, and the difference between document review and performance testing.
Core rules
- Verification methods include document review, letters of assurance, and on-site performance tests by a WELL Assessor.
- Air and water tests must use calibrated instruments and appropriate sampling protocols. Sample locations should represent occupied spaces and point-of-use conditions.
- Acoustic and lighting measurements are taken where people work, at relevant times, with the building in normal operation.
- Thermal measurements should reflect seasonal conditions and occupant clothing and metabolic assumptions; a single spot reading is weak evidence.
- Sampling should be representative, not cherry-picked. If one location fails, the project needs a cause analysis and corrective action.
Worked example
A project submits an air-quality report from a Saturday when the building was unoccupied and the HVAC was off. The reported PM2.5 and CO2 look excellent. The assessor rejects the evidence because it does not represent occupied conditions. The reasoning: performance verification is about the environment people experience. Retest on a weekday with normal occupancy and ventilation.
Traps
Testing in unoccupied or atypical conditions. Using an uncalibrated or expired meter. Sampling only the best-looking room. Confusing a design drawing with as-built performance. Treating a one-time test as ongoing monitoring.