Your Air Box Stealth is built for powerful, reliable filtration—but like any high-performance system, it needs regular maintenance to keep delivering peak results. One of the most important things you can do? Stay on top of your filter replacement schedule.
But how do you know when it’s time?
Here are 10 telltale signs it’s time to replace your Air Box Carbon and HEPA filters:
1. You Notice a Drop in Airflow
If your airflow feels weaker than usual, your filter may be clogged. When filters fill up with dust and contaminants, it restricts the passage of clean air.
2. Strange Odors Linger
Carbon filters are designed to neutralize odors. If you start noticing persistent smells—especially smoke, chemicals, or VOCs—it’s a sign your carbon filter is saturated and no longer absorbing effectively.
3. Your Allergy Symptoms Are Back
A sudden return of sneezing, itchy eyes, or respiratory irritation can mean your HEPA filter is no longer trapping allergens like pollen, dust, or pet dander.
4. Visible Dirt and Dust Build-Up
If the filter looks discolored, dusty, or visibly clogged, it’s time to swap it out. A clean filter should look clean—period.
5. It’s Been 6 Months or More
Even if everything seems fine, both carbon and HEPA filters should typically be replaced every 4–6 months depending on usage, air quality, and environment. Mark your calendar—or let Subscription+ do it for you!
6. You Live in a High-Pollution Area
Urban environments or areas with nearby construction or industrial activity can overload filters faster than average. You may need to change yours more often.
7. Recent Wildfire Smoke or Indoor Pollutant Exposure
If you’ve had poor air quality due to wildfires, heavy smoke, or indoor painting/renovations, your filters may be saturated and should be replaced.
8. Your Unit Sounds Louder Than Usual
A clogged filter can cause strain on your Air Box fan, resulting in louder-than-normal operation. New filters help it run more efficiently and quietly.
9. You’re Using the System Daily
If your Air Box Stealth runs 24/7 in a commercial or high-traffic space, your filters will naturally need replacing more often. Frequent use = faster saturation.
10. You’re Guessing When You Last Changed It
If you don’t remember when you last replaced your filters… it’s probably time. A consistent schedule is the best way to maintain clean, healthy air.
Pro Tip: Make It Easy with Subscription+
Don’t leave your air quality to chance. Air Box Subscription+ lets you schedule recurring deliveries of replacement filters at your chosen frequency—with 10% savings on every order. You can even add prefilters at a discount. Learn more and sign up here:
Breathe better. Worry less. Replace regularly.
— The Air Box Team
For residential, commercial and industrial applications. Order Air Box filters and Ruck inline fans direct from the manufacturer at: www.airboxfilter.com
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