Filter King Codes: 20% Off 12-Packs + Free Ship (Ends 10/26)
Admin Filter King is running a short stack of exclusive promo codes through October 26th, and if your furnace filter is overdue, this is the week to restock. Use code HIP2SAVE20 for 20% off 12-packs or larger, or HIP2SAVE15 for 15% off 6-packs through 11-packs. Shipping is free on top of the discount.
The math is straightforward: a 12-pack is the best per-filter price anyway, and knocking another 20% off plus free shipping makes this one of the cheapest ways to cover a full year of filter changes in one order. Filter King sells American-made furnace and AC filters in just about every size, including custom cuts, so measure your return grille before you order.
A few practical notes. The codes go in at checkout on filterking.com — type them exactly as shown. Both expire October 26th, so this is a true limited-time window, not an evergreen coupon. The 20% tier needs a 12-pack or larger in the cart; smaller bundles only qualify for the 15% code.
How to get it
- Head to Filter King (link below) and find your filter size.
- Add a 12-pack (or 6–11 pack) to the cart.
- Enter code HIP2SAVE20 (12+ packs) or HIP2SAVE15 (6–11 packs) at checkout.
The fine print, plainly: HIP2SAVE20 = 20% off 12-packs or higher, expires 10/26; HIP2SAVE15 = 15% off 6–11 packs, expires 10/26. Free shipping on qualifying orders. Codes cannot be combined.
Offer verified: 2026-10-22 (UTC). Codes confirmed in the source promotion; free shipping confirmed on filterking.com.
