---
id: faq-0062
title: "Do I need to replace my air filter, and how often?"
category: faq
subtopic: service-and-maintenance
page_type: faq
source_url: "https://www.castlesubarumchenry.com"
tags: ["air-filter", "cabin-air-filter", "routine-maintenance"]
questions:
  - "When should I change my air filter?"
  - "How do I know if my air filter needs replacing?"
  - "What's the air filter replacement interval?"
related: [maintenance-schedule, fluid-checks, service-cost]
dealer: Castle Subaru McHenry
---

Your Subaru has two air filters: the engine air filter and the cabin air filter. Both need periodic replacement to keep your engine running efficiently and your cabin air fresh and clean.

The engine air filter typically needs replacement every 15,000-30,000 miles depending on driving conditions (dusty environments may need more frequent changes). The cabin air filter usually lasts 15,000-30,000 miles as well. If you notice reduced engine performance or weak air conditioning, it might be time for a check.

Castle Subaru McHenry's Service Department can inspect both filters and recommend replacements with genuine Subaru parts. Give us a call at (779) 601-0797 to schedule a filter inspection-we'll keep your Subaru breathing easy.