Arm & Hammer Air Filters, 12-Packs | $55 | Home Depot

You all know this, but replacing the air filter is the cheapest way to improve the air quality in your home, removing funky smells and allergens. And you can get a 12-pack for only $55 today with Home Depot’s sale on Arm & Hammer 4-pack air filters.

A 4-pack of air filters are selling for $44 on Amazon so this 12-pack is a really good deal. It only lasts until the end of the day, so don’t sleep on it!