Shipping & Returns
Last updated October 13, 2026
Shipping
- Shipping is included in the price. Filters are sold by the case of 12, and the price you see for a case is the price delivered. There is no shipping charge at checkout.
- Most orders ship the same or next business day. We email you a tracking number when your order ships.
- All 12 filters in a case ship in one box.
- We ship to the lower 48 US states. We cannot ship to Alaska, Hawaii, US territories, or military APO, FPO, and DPO addresses.
If we got it wrong
Our mistake? We fix it free. If we send the wrong size or the wrong grade, contact us within 30 days and we will get the right filters to you at no charge, including shipping. If you are unsure about sizing before ordering, read our sizing guide or call (270) 534-5492 and a tech will confirm it in two minutes.
Returns
- Ordered the wrong size? An unopened case is returnable within 30 days of delivery for a refund of the case price.
- Opened cases and installed filters: not returnable for hygiene reasons, unless the mistake was ours.
- Custom sizes: made to your dimensions and not returnable, unless they arrive in the wrong size.
To start a return, email mstoll@advancedthermalconcepts.com with your order details. Refunds are issued to the original payment method once the return is received.
Yearly subscription
The Filter Club yearly subscription sends a new case every 12 months and charges your card the same price each time, until you cancel. Cancel at any time by calling (270) 534-5492 or emailing mstoll@advancedthermalconcepts.com. No fees and no retention pitch. If a renewal just charged and your case has not shipped yet, call us and we will refund it. Details on the subscription page.
Damaged in transit
If your order arrives damaged, send a photo to mstoll@advancedthermalconcepts.com within 7 days and we will replace the damaged filters at no charge. No need to return them.