There is no evidence-based three-to-five-year schedule that applies to every home. EPA does not recommend routine duct cleaning on a fixed calendar and says it has not been shown to prevent health problems. The condition of the system—not the number of years since the last service—should guide the decision.
Conditions to document
EPA says cleaning may be considered if there is substantial visible mold growth inside hard-surface ducts or HVAC components, vermin inside the ducts, or excessive debris released into the home from supply registers. Dust on a register, pet ownership, a recent move, or allergy symptoms alone do not prove that a whole duct system needs cleaning.
Correct moisture, pest entry, damaged ducts, and filter-fit problems at their source. Wet or moldy insulation inside ducts cannot be effectively cleaned and may need replacement. Ask a provider to show the concern and explain the written scope before approving work.
Local next steps
In Hampton Roads neighborhoods such as Little Creek, a photo inspection can document an accessible duct concern before service is recommended. If the concern is a pest entry point rather than duct debris, Universal Pest in Virginia Beach serves the region. Compare the tier-specific benefits of the Total Home Health plans.