How to Choose a Commercial Duct Cleaning Partner

Commercial duct cleaning is difficult to evaluate from a quotation alone. Two contractors can use the same service name while proposing very different scopes, access assumptions, methods and evidence standards.

1. What exactly is included?

Ask the contractor to define system boundaries, not just the visible surfaces.

2. How will the system be inspected?

The proposal should explain how internal condition will be assessed.

3. What access assumptions are being made?

Clarify existing access doors, ceiling access, rooftop permission and any new access that may be required.

4. Which cleaning method will be used—and why?

The answer should relate to the actual duct type and contamination.

5. How will the operating facility be protected?

Ask about work-zone protection, timing, extraction, waste handling and reinstatement.

6. What evidence will be handed over?

Define expected photographs, inspection records, checklist, sign-off or other completion documents before award.

7. What happens if an issue is found outside scope?

A good contractor should record and communicate observations rather than improvise unauthorised work.

The strongest partner is the one that can explain the system, method, evidence and handover clearly before work begins.