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Built on the back of 50 years of HVAC filtration experience. Only trusted manufacturers. No knockoffs.

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Buying for a facility?
Quote requests, net terms, and tax-exempt setup available.
Schools, multifamily, property management, and government accounts — we can set up a quote or a standing order matched to your change-out cycle.
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Before you check out

When will my order arrive?

Timing depends on the product. Stocked items ship from the closest fulfillment location. Custom and made-to-spec orders go into production before shipping — each product page lists its own production lead time. You'll receive tracking details by email once your order ships. See our production schedule for full details.

What if the filter doesn't fit?

Our 30-day Filter Fit Guarantee covers it. If a size doesn't fit, we remake it in the corrected size for a flat $30 replacement-shipping fee — no return hassle, no restocking fees. See full details →

Do you ship to Alaska, Hawaii, or PO boxes?

We ship to Alaska and Hawaii at carrier rates (calculated at checkout). Free shipping on orders $50+ applies to the lower 48 contiguous states only. We can't accept PO boxes — filter boxes are physically oversized, so we use UPS and FedEx as primary carriers.

What payment methods do you accept?

Visa, Mastercard, American Express, Discover, PayPal, Venmo, Shop Pay (including installments), Amazon Pay, Google Pay, and Apple Pay at checkout. Commercial accounts can request net terms — submit a quote request to set that up.

Can I order tax-exempt?

Yes — schools, government agencies, resellers, and qualifying nonprofits can purchase tax-exempt. See the tax-exempt purchases page to submit your certificate and get set up.

Can I change my order after checkout?

If your order hasn't shipped yet, we can usually adjust it. Contact us right away by phone or text — 866-469-8556 or text 425-515-2727 — and we'll see what's possible before it leaves the warehouse.