Duct Cleaning and Sanitizing
a condition-based approach to duct cleaning
When Duct Cleaning May Be Appropriate
The U.S. EPA does not recommend routine duct cleaning on a fixed schedule.
Cleaning may be worth considering when an inspection finds substantial visible mold growth on hard-surface HVAC components, vermin, or excessive dust and debris being released from supply registers.
The source of moisture or contamination should be identified and corrected; cleaning alone does not prevent a problem from returning. See the EPA’s homeowner guidance.
- Inspect First: Ask for visible evidence and identify which parts of the HVAC system are affected before choosing a scope of work.
- Address the Source: Moisture, pests, damaged filters, renovation debris, or duct leakage may require correction in addition to—or instead of—cleaning.
- Use a Defined Scope: If cleaning is warranted, the proposal should identify the accessible ducts and HVAC components to be cleaned.
- Understand the Limits: Light household dust is common, and duct cleaning has not been shown to prevent health problems in every home.
Request an Evidence-Based Assessment
Our Condition-Based Duct Cleaning Process
Inspection and Scope: We begin by reviewing accessible ductwork, registers, and relevant system components and discussing the conditions that prompted the request.
Mechanical Cleaning When Warranted: If the findings support cleaning, the agreed scope focuses on removing identified debris from accessible surfaces while protecting the home and HVAC equipment.
Chemical Treatments Are Not Automatic
Sanitizers and biocides are not a routine substitute for mechanical cleaning or source control. If a chemical treatment is proposed, its intended use, product registration, system-material compatibility, and homeowner precautions should be discussed before application.
Final Review
After the agreed work, accessible components are reviewed and the homeowner is told what was cleaned, what was not accessible, and whether any moisture, leakage, pest, or damaged-duct concern still needs attention.
Concerned About Visible Debris or Contamination?
Schedule an inspection before deciding on cleaning.
