F25-1003 | Genuine Paccar® Cab Air Vent

Improves Comfort: Helps regulate temperature and reduce stuffiness inside the vehicle.
Reduces Fogging: Proper ventilation helps prevent windows from fogging up by balancing humidity.
Supports HVAC System: Works with heating, ventilation, and air conditioning to maintain a comfortable environment.
Prevents Moisture Build-Up: Helps avoid moisture accumulation that can cause mold or mildew.

Poor Air Circulation Inside the Cab

Stale or stuffy air

Hot spots or uneven temperature inside the cab

HVAC system struggles to maintain airflow

Foggy or Condensed Windows

Lack of proper ventilation causes humidity buildup

Frequent fogging on windshield or side windows

Unusual Odors or Musty Smell

If air isn't circulating properly, moisture builds up, leading to mold or mildew in the HVAC system or upholstery.

Whistling or Rattling Noises

Damaged vents or loose internal flaps may cause air whistling at highway speeds.

Rattling could indicate a broken vent cover or internal flap.

Water Leaks Into the Cab

Cracked or improperly sealed air vents can let rainwater or moisture into the cabin.

Physical Damage or Blockage

Broken louvers, stuck vent covers, or blocked intake screens

Dirt, leaves, or debris may clog external vent areas, reducing effectiveness

Unusual Air Drafts

If a vent flap is stuck open or broken, you might feel cold or hot drafts unexpectedly—even when the HVAC system is off.