Request the observed evidence.
Ask which findings support the recommendation and which areas could be inspected. A general statement that ducts become dirty does not describe this system’s condition.
HVAC · Woodway, Washington
HVAC in Woodway proposals that include duct cleaning should explain the condition that justifies that work. Ask the provider what was observed, which parts of the system are affected and why the proposed cleaning belongs with this equipment change.
Dust at a register, a quoted cleaning allowance and a documented contamination problem are different kinds of information. Keep the actual assessment attached to the work being recommended rather than assuming that every equipment replacement requires the same duct service.

Heating and cooling
Have the qualified provider show and explain the observed condition, identify the affected components and state the proposed response. If a cause such as water entry is found, ask how that cause will be addressed so cleaning is not presented as the entire remedy.
Ask which findings support the recommendation and which areas could be inspected. A general statement that ducts become dirty does not describe this system’s condition.
Ask what components are included, who performs the work and how the retained equipment and home are protected. Distinguish duct cleaning from other maintenance or duct repairs.
Have the appropriate provider identify and resolve contributing conditions where needed. Keep that work visible rather than assuming a cleaning visit prevents recurrence.
Before work begins
Woodway lists mechanical applications through MyBuildingPermit and notes that outdoor equipment location is subject to Building Official review. Describe the actual replacement and any associated duct or other construction so the provider can confirm the applicable approvals.
EPA does not recommend routine duct cleaning for every home. This guide does not diagnose indoor air conditions, promise health benefits or offer a chemical treatment; the actual system findings determine the appropriate qualified follow-up.
Ask the provider to explain the assessed condition and why cleaning is included in this particular proposal.
Request the actual findings and their limits from the responsible provider.
Have a confirmed underlying cause and any related corrective work identified separately.
Share the current system and replacement interest, plus any inspection findings behind proposed duct cleaning or related corrective work.