Check the heating element, thermal fuse, and thermostat with a multimeter for continuity. Replace any faulty parts—most are accessible behind the back panel.

Disconnect the vent hose, use a dryer vent brush or vacuum attachment, and scrub from both ends. For deep cleaning, hire a professional duct cleaning service.

Yes, if you have electrical/plumbing skills. Ensure proper water supply, drain line, and GFCI outlet connections.