Heating, Ventilation & A/C Systems

Maintenance Tips

• Check belts, hoses and heater lines every 20,000 miles. Replace if
  there is any sign of damage, leak or bubble, or if hoses feel soft and
  spongy. In any case, replace belts and hoses every 30,000 miles or 4
  years.
• Clean condenser and radiator fins every 20,000 miles
• Check vacuum control lines every 20,000 miles

Credits: 
Illustrations ~ Russell von Sauers
Tips ~ Car Quest