We recommend replacing your filter every 3 months to keep your purifier performing at its best. A clogged filter reduces airflow and filtration efficiency — meaning your air quality suffers without you even knowing it. Our subscription plan makes this effortless by automatically shipping a fresh filter to your door every 3 months so you never have to think about it.

When you add a filter subscription to your purifier purchase your first filter shipment is completely free. After that you'll receive a fresh replacement filter every 3 months at $5 off every order — automatically shipped to your door with no action required. You can pause, skip, or cancel anytime from your account. It's the easiest way to make sure your air is always clean.

Each AirCore model is built for a different space. The AirCore Go covers up to 300+ sq ft — perfect for your car or small office. The AirCore One covers 500+ sq ft — ideal for a bedroom or home office. The SleepFlow models cover 900+ sq ft — designed to purify your entire bedroom or large living space. Not sure which is right for you? Check our product page for a full breakdown.

AirCore purifiers are virtually silent during normal operation — you'll barely notice it running. If the air quality sensor detects excess pollution it will briefly enter a higher purification mode to clear the air faster, but even then it remains quiet and returns to silent mode quickly once the air is clean.

Most cheap purifiers use basic filters that miss ultrafine particles — the ones that actually affect your sleep, focus, and energy. AirCore uses H13 True HEPA filtration which captures 99.97% of airborne particles including the smallest pollutants. On top of that our automatic filter subscription means your purifier is always running at full efficiency — most people with cheap purifiers never replace the filter, which means they're eventually running dirty air through a clogged filter and calling it clean.

Absolutely. If you are not completely satisfied with your AirCore purifier for any reason we offer a full 30-day money back guarantee. No questions asked. We stand behind our product and want every customer to feel confident in their purchase. Simply reach out to our support team and we'll take care of you.