Service illustration · not a completed customer projectTHE WORK, EXPLAINED
Start with the condition.
Understand the scope.
EPA advises replacement when insulated duct material is wet or moldy, rather than treating it as effectively cleanable. Ask the responsible specialist to identify the affected material, moisture source and replacement boundaries. Confirm who will assess surrounding components and document any conditions that need correction before replacement.
What may be involved
- fiberglass liner
- duct board
- moisture source
- replacement scope
Ask the provider to distinguish existing parts to inspect, proposed replacements, and tools, materials or reports included in the service. Confirm the work and exclusions after assessment; this list does not mean that every item will be supplied or replaced.
LOCAL RESEARCH / Casselberry
Local context
The EPA does not recommend that air ducts be cleaned routinely, but only as needed, and names three situations where cleaning may be appropriate: substantial visible mold growth inside hard-surface ducts or on other components, ducts infested with vermin, and ducts clogged with excessive dust and debris where particles are actually released into the home. The EPA also notes that no chemical biocides are currently registered for use in internally-insulated air duct systems, and does not recommend routine use of sealants to encapsulate contaminants. Ask which of those conditions was observed before agreeing to any work.
Source ↗Planning your work
A Florida law effective 1 July 2026 requires local governments to exempt work on single-family residential property valued at $7,500 or less from the building permit requirement, but the exemption excludes any electrical, plumbing, structural, mechanical or gas work and does not apply in flood hazard areas. Much duct and air-handler work falls into one of those excluded categories, so the exemption is narrower than it first reads. Casselberry is in Seminole County; confirm with the county or city building department which office reviews the address and what it now asks for.
Source ↗Area-wide context does not establish the condition of your property or equipment.
Before the visit
Building age and weather cannot establish duct contamination. The system itself needs to be inspected.
