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Standards

Mold Remediation Boundary

The line between duct cleaning and licensed mold remediation.

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All glossary terms

What is Mold Remediation Boundary?

Where visible mold growth is found, the response is governed by the moisture source and, in Texas, by licensing — remediation of mold in ducts, plenums or HVAC components is licensed work and is not the same thing as duct sanitising. The correct sequence is always to identify and correct the moisture source first; treating growth without fixing why it is wet produces a temporary result.

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Other terms in the glossary

MERV
The standardised scale for how efficiently a filter captures particles.
Pressure Drop
The airflow resistance a filter or fitting adds to the system.
Static Pressure
The pressure the blower works against — the measurement that says what filter a system can take.
NADCA ACR Standard
The industry standard defining what a legitimate duct cleaning actually is.
Source Removal
Extracting debris from the system rather than dislodging it into the airstream.
Plenum
The main air chamber directly at the air handler where supply or return trunks connect.

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