Refund policy

Filterflow Refund Policy — Last updated: 10/20/2026

Ordered the wrong size? We've got you.
Email support@filter-flow.com within 14 days of delivery with your order number. Place an order for the correct size, then send the unused wrong-size filters back to the return address we give you (return shipping is paid by you). We refund your original order as soon as the return arrives.

Damaged in shipping, or we sent the wrong size
Email support@filter-flow.com within 90 days of delivery with your order number and photos of the filters and packaging. We'll send replacement filters free of charge, and there's nothing to send back unless we ask.

Defective filters (90-day warranty)
Our filters are warranted against defects in materials and workmanship for 90 days from purchase. Email support@filter-flow.com with your order number and a description or photo of the defect, and we'll handle the claim with the manufacturer. You may be asked to return the defective filter (return shipping is paid by you). If the defect is confirmed, we'll replace the filter or refund its purchase price. The warranty doesn't cover damage from improper installation or misuse, unusually dusty or polluted environments, normal wear, or filters that have been altered.

Other returns
Because filters ship directly from the warehouse, we can't accept returns for other reasons. Not sure of your size? It's printed on the edge of your current filter, or email support@filter-flow.com before you order and we'll help.

Lost in transit
If tracking shows a shipment lost or significantly delayed, see our Shipping Policy — we'll help track it down or send a replacement.

Refunds
Approved refunds go to the original payment method, typically within 5–10 business days of approval.

Subscriptions
Cancel or skip anytime before the next annual ship date from Account → Subscriptions or by emailing support@filter-flow.com, with no fee; cancellation stops future shipments and charges. A pack that has already shipped is covered by the policy above. If you're charged for a renewal you intended to cancel, contact us within 14 days and we'll work with you on a resolution.

Contact — Filterflow LLC — support@filter-flow.com — 1250 Wayzata Blvd E, Unit #1869, Wayzata, MN 55391