Air Filters Delivered Discount Codes

Air Filters Delivered: the boring purchase that quietly runs your home

Nobody gets excited about an air filter, right up until the HVAC bill climbs or someone in the house starts sneezing through allergy season. Air Filters Delivered exists for that unglamorous but constant need - pleated furnace and HVAC filters, made in the USA, shipped to your door before you forget you needed them. The current codes and offers for August 2026 are at the top of this page, and yes, a filter subscription is one of the few purchases where a discount genuinely repeats every month.

Made in the USA, shipped free

The filters are manufactured at the company's own US facility rather than imported, and the pitch is refreshingly plain: clean indoor air should not come at a premium. Shipping is free on every order with no minimum spend, which matters for a product you buy in ones and twos. For a category most people treat as a grudge purchase, "American-made and free to ship" removes the two usual excuses.

Finding your size without a tape measure panic

Filters are sold by three numbers - length, width and depth - printed on the cardboard edge of your current one, like 20x20x1 or 20x25x4. The best-sellers here (20x20x1, 20x25x1, 16x25x1 and 20x25x4) cover the most common systems, and the site carries 1-inch, 2-inch, 3-4 inch and 5-6 inch depths plus furnace, air purifier and humidifier filters. If your size is unusual, there is a custom filter builder that makes it to order. The golden rule: read the old filter before you buy, not after.

MERV ratings, in plain English

The other number that matters is the MERV rating, which measures how fine the filtration is. The store stocks MERV 6, 8, 11 and 13. Lower ratings (6-8) catch dust and lint and keep airflow high, which suits a lot of homes. Step up to MERV 11 if you have pets, and MERV 13 if allergies or general air quality are the priority, since it captures much finer particles. Higher is not automatically better - very fine filters can strain older systems - so match the MERV to your household rather than just grabbing the biggest number. The site has MERV education built in if you want to dig deeper.

Subscribe and stop thinking about it

The genuinely smart feature is Subscribe and Save. Filters only work if you change them on schedule, and almost nobody does that reliably from memory. Setting a subscription means fresh filters arrive on a cadence you choose, at a lower price, with SMS reminders and a rewards programme on top. For pet owners and allergy sufferers especially, that "set it and forget it" rhythm is the difference between a filter that helps and one that clogs. It sits comfortably in the wider home and garden essentials most households restock without thinking.

How often should you actually change it

The honest answer is "more often than you do now." A 1-inch pleated filter in an average home wants changing roughly every 60 to 90 days; drop to monthly if you run the system hard, have shedding pets, or someone in the house has allergies. Thicker 4-inch and 5-inch filters have more surface area and can stretch to six months or more. The signs you left it too long are easy to spot: visibly grey, dusty pleats, weaker airflow from the vents, and a heating or cooling bill creeping up because the system is straining to pull air through a clogged filter. A blocked filter does not just stop cleaning the air - it makes your HVAC work harder and cost more, which is the opposite of the point.

Returns and peace of mind

If you order the wrong size or change your mind, returns are hassle-free within 30 days, backed by the company's satisfaction promise and support team. Between free shipping, US manufacturing, a custom-size tool and a subscription that times itself, it turns a chore into something you set up once. Grab a code above, and browse more stores on GetMePromo for the rest of your August 2026 home restock.