InterNACHI Well study guide
InterNACHI Well · Work through your exam, one topic at a time.
The InterNACHI Well credential is aimed at home and building inspectors who want to extend their practice from code-minimum and structural concerns into occupant health and wellness. Where a conventional inspection asks whether a building is safe and sound, a well-focused inspection asks whether the people inside it can breathe, see, hear, hydrate, and move comfortably. The InterNACHI Well study guide has 10 sections and about 2,690 words.
01WELL Building Standard Concepts, Structure, and Certification Process
This domain checks whether you can read WELL v2 as a structured standard rather than a list of green building credits. Expect questions on concepts, feature and part numbering, precondition versus optimization status, certification levels, and who verifies what.
296 words, about 1 min02Air Quality: Ventilation, Filtration, and Pollutant Management
Air questions focus on the hierarchy of indoor air quality: eliminate or isolate sources, ventilate with outdoor air, then filter and monitor. You should be able to interpret CO2, PM2.5, and TVOC readings and choose the control that addresses the cause.
287 words, about 1 min03Water Quality: Filtration, Contaminants, and Access
Water questions test whether you can distinguish aesthetics from safety, select appropriate testing points, and connect results to treatment and access. Test at point of use, not only at the building entry.
262 words, about 1 min04Thermal Comfort and Sound Environment
This domain combines two comfort drivers that are measured separately but experienced together. Expect questions on ASHRAE 55 thermal comfort, zoning, acoustical metrics, and the difference between background noise and reverberation.
266 words, about 1 min05Light: Daylight, Electric Lighting, and Circadian Considerations
Light questions ask you to separate daylight availability, glare, electric-light quality, and circadian stimulus. You need to know which metric answers which question.
276 words, about 1 min06Nourishment and Movement Promotion in Buildings
This domain tests how buildings make healthy food and routine movement the default, not an afterthought. Expect questions on food availability, nutritional transparency, allergen control, stair design, and ergonomics.
255 words, about 1 min07Mind and Community: Mental Health, Comfort, and Occupant Engagement
This domain covers mental health promotion, restorative space, nature access, occupant engagement, and emergency preparedness. The exam favors operational evidence over design intent.
249 words, about 1 min08Materials and Finishes: VOC Content, Emissions, and Hazard Avoidance
Materials questions test the difference between VOC content and VOC emissions, hazard avoidance, and the evidence used to support a claim. You should know why "low VOC" is not the same as "low emitting." VOC content is the amount of volatile organic compound in a product, often reported as grams per liter for wet-applied products.
283 words, about 1 min09Inspection, Testing, and Verification Methods for WELL Features
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.
259 words, about 1 min10Documentation, Performance Verification, and Reporting
This domain covers the evidence chain: what you submit, how it is reviewed, how performance is verified, and how results are reported. The exam rewards project-specific, dated, and traceable evidence.
257 words, about 1 min