Today only, save up to 45% on select Honeywell Air Filters and other healthy home items at HomeDepot.com, plus, shipping is free. Most of the air filters come in 4-packs that drop from $42 to $22.99, which matches the last time we saw this deal. They have excellent reviews. You can view all available sizes by scrolling at the bottom of the page. Please note, these may sell out quickly. Most packs include 4 filters, which is the recommended yearly supply and they are effective against dust/lint, airborne dust mite debris, pollen, pet dander, mold spores and bacteria. You can choose from other healthy home items like water filters and vacuums. Sales tax is charged in most states.