Most Rocklin homes benefit from ventilation cleaning every 3-5 years, but several factors can change this timeline. If you have pets, family members with allergies, or live near construction areas, annual cleaning makes more sense. Dryer vents need attention more frequently—typically every year for average use, or every six months if you’re doing more than five loads weekly. The key warning signs are clothes taking longer to dry, your dryer feeling unusually hot, or lint accumulating behind the machine faster than normal.