Clearance testing in Morrow is a final inspection, done by someone other than the remover, that checks a mold work area for leftover growth, dust and moisture and compares indoor air samples with outdoor air. It is the signal that rebuilding can start. Call the number on this page to be connected with a local mold inspector in Morrow.
Morrow is a Clayton County city of about 6,600 people along I-75, roughly 12 miles south of Atlanta and home to Clayton State University, Southlake Mall and the Georgia Archives. Homes here face the same pressures as the rest of the south metro: long humid summers, air conditioning that runs most of the year, and red clay that keeps foundations damp. Ductwork and air handlers are a frequent part of mold jobs as a result, and they need to be in the final check.
What to do now
- Find out whether the HVAC system was part of the cleanup, and keep it off until the tester has checked it.
- Confirm the condensate line, drain pan or leak that fed the mold has been repaired.
- Agree on pass criteria in writing with the remover and the tester.
- Ask the tester to sample at a supply vent as well as inside containment if ducts were involved.
- Hold the drywall and flooring crews until results come back.
What the report may show
| Finding | Likely cause |
|---|---|
| Spores in the supply air unlike outdoor air | Air handler coil or duct lining still contaminated |
| Moisture in drywall near the air handler closet | Overflowing drain pan or clogged condensate line |
| Debris behind removed baseboards | Incomplete HEPA vacuuming |
| Musty air in a room outside containment | Spread through return air before the system was shut off |
EPA advises not running an HVAC system you suspect is contaminated, since it can spread mold through the house. If the report flags the ducts, the remediation company should clean them again and the tester should resample before the system is switched back on. EPA sets no federal spore limits, so the written pass criteria are what the result is measured against.
Cost factors
Angi's 2026 national data lists an HVAC test at about $50 to $75 added to an air test, and HomeGuide's 2026 national ranges put air sampling at $100 to $300 per test and surface sampling at $50 to $200. Sample count, duct access and lab speed set the total. If repairs follow, the City of Morrow's Planning and Economic Development office at the Morrow Municipal Complex is the place to ask about building permits. The Clayton County Board of Health can help with health questions.
Post-Remediation Clearance Testing questions in Morrow
Should the air handler and ducts be part of clearance?
When should the clearance test happen?
The area passed, but the house still smells musty. What now?
What does a clearance test usually cost?
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