Post-Remediation Clearance Testing

Remediation isn't finished until testing confirms it worked — here's what that step actually involves.

Why this step gets skipped, and why it shouldn't

Remediation contractors are focused on the removal and cleanup work — understandably, testing isn't their job. But without a verified baseline and a verified after-result, there's no real confirmation the work actually resolved the problem, especially if your HVAC system was part of the contamination path. We handle the HVAC isolation, post-work duct cleaning or replacement, and clearance testing side of the process — independent of whoever performed the remediation itself.

Frequently asked questions

What is clearance testing?

Testing performed after mold remediation is complete, to confirm mold levels have actually returned to normal before you move back in or remove containment. It's the verification step, not the remediation itself.

Who should perform clearance testing?

Ideally a party independent from whoever did the remediation work — this avoids any conflict of interest in confirming the job was done properly.

Does clearance testing check the HVAC system too?

It should. If your HVAC system wasn't isolated properly during remediation, or if ductwork was affected, air moving through a still-contaminated system can undermine an otherwise successful remediation.

How long does clearance testing take?

With on-site qPCR testing, results are available the same visit — much faster than traditional mail-in lab panels, which can take a week or more.

See our full Mold & CIRS Support guide for how testing, HVAC work, and verification fit together.