6-pack vs 12-pack: 20x25x1 cost

For the common 20x25x1 furnace/AC size, a bigger multi-pack usually cuts the per-filter price — but brands do not sell matching 6 and 12 counts. Filtrete often sells a 6-pack; Honeywell Store sells 4-packs and 12-packs. Use $/filter (pack price ÷ count), then buy the printed size that matches your slot.

Quick answer

• Honeywell Store 12-pack beats three 4-packs on the same MERV line (re-checked 27 Sep 2026): MERV 8 saves about $6.90 per year of filters; MERV 11 about $12.90; MERV 13 about $11.90.
• Storage and change cadence matter: a 12-pack is roughly a year of quarterly 1-inch changes. See how often to change.

Honeywell 4-pack vs 12-pack (same SKU line)

Honeywell does not list a 6-pack on these Store PDPs. The honest apples-to-apples check is three 4-packs versus one 12-pack of the same efficiency. Prices below are live Honeywell Store carts re-checked 6 Sep 2026.

4-pack Buy links on the size page: Standard 4-pack, High 4-pack, Ultra 4-pack. Actual size for these Honeywell 1-inch SKUs is typically 19.75 × 24.75 × 0.75.

Filtrete 6-pack vs Honeywell 12-pack

This is a cross-brand $/filter check, not the same media. Filtrete MPR 1000 is commonly labeled MERV 11.

On this snapshot, Honeywell’s MERV 11 12-pack is the verified mid-grade multi-pack benchmark. Nordic Pure’s large 24-packs (factory cart via Awin, re-checked 17 Oct 2026 on nordicpure.com: MERV 8 $189.99 and MERV 13 $259.99 one-time) undercut Honeywell MERV 8 on $/filter but use a slightly smaller cut (~19.5 × 24.5). Measure first if the slot is tight: how to measure · actual-size chart.

When a smaller pack still wins

• You are changing size or MERV soon — do not stock a year of the wrong cut.
• Damp storage — cardboard multi-packs hate basements; buy what you will use in a few months.
• Subscribe-and-save / store-only deals — a sale 4-pack or 6-pack can briefly beat the list 12-pack; re-check the cart before checkout.
• Odd schedule — pets, smoke, or renovation may need monthly changes; a 12-pack still works, but cash outlay is larger up front.

Where to buy

• Full 20x25x1 money page — actual size, MERV table, all pack rows
• MERV 13 only — 20x25x1 MERV 13 compare
• Other common sizes — 16x25x1 · 20x20x1 · 16x20x1

Full policy: disclosure.