Vacuum is very loud at the exhaust and airflow seems restricted, especially on high power.

Safety: Turn OFF the vacuum and remove the battery.

Clean exhaust path:

• Remove the HEPA filter and inspect it; clean or replace as needed.
• Check the exhaust grille and surrounding channels for lint or debris and clean with a soft brush.

Reinstall the filter and test. If noise remains abnormally high, the internal muffler or housing may be damaged and require service.