ERMI and HERTSMI-2: What Dust Testing Can and Cannot Tell You in Idaho
ERMI and HERTSMI-2 are the dust tests most CIRS-literate physicians reference. This guide explains what they measure, how to collect a sample that means something, how to read the scores, and the honest limitations nobody selling you a kit will mention.
What Idaho changes about the picture
Semi-arid with cold winters and mountain snow zones. Basement construction common; cold-season condensation in tight newer builds is a growing pattern.
Protocols are national; moisture is local. In Idaho, the pressure a building lives under comes from specific, predictable directions — and this protocol should be read with those directions in mind, because they decide where the risk concentrates, which assemblies fail first, and what a defensible local scope looks like.
The ID moisture drivers to read this against
- Winter condensation
- Snowmelt at foundations
- Irrigation and drainage at building perimeters
What never changes — anywhere
What stays constant in Idaho is the discipline: find the moisture, test honestly, correct the water before the growth, remediate under containment to the sensitized-occupant standard, and let an independent verifier — not the contractor — decide when it is done.
The full protocol below covers the national playbook in depth — read it alongside the ID context above.
Read the full protocol: ERMI and HERTSMI-2: What Dust Testing Can and Cannot Tell You →
- What these tests actually measure
- Why dust beats a single air sample
- Collection determines whether the result means anything
- Reading the numbers without panic
- The honest limitations
- When to retest
Idaho questions
Does this protocol change in Idaho?
The sequence never changes — locate moisture, test honestly, fix water before mold, remediate under containment, verify independently. What changes in Idaho is where the moisture pressure comes from: winter condensation That determines where instruments go first and which assemblies earn suspicion.
What should Idaho households check first?
Start with the failure modes this housing stock is known for. Basement construction common; cold-season condensation in tight newer builds is a growing pattern. A moisture-focused assessment that ignores those patterns is guessing.
Can I get matched with a vetted provider in Idaho?
Yes — matching runs in all 50 states. Every provider is vetted on containment discipline, fine-particle competence, and willingness to be independently verified. Matching is free for households.
THIS PROTOCOL IN OTHER PRIORITY MARKETS → California · Colorado · Florida · Nevada · Texas
NEXT IN THE ID LIBRARY → The Mold Inspection, Done Right: A Homeowner's Field Manual in Idaho