Coleman Quiet Mach 3 ducted or non-ducted prep

Use the official Coleman-Mach Quiet Series Mach 3 page to identify ducted versus non-ducted models before support.

Owner-safe checklist

Record the Quiet Mach 3 model, visible data-label details, ducted or non-ducted setup, control type, RV make and model, and exact symptom.
Save photos of the visible label, ceiling assembly, thermostat or control state, purchase paperwork, and airflow notes.
Use Coleman-Mach, an Airxcel service center, dealer, or qualified RV HVAC service for installed power, compressor, fan, parts, or replacement decisions.