How we make this list: we compare pricing pages, product documentation and public user reviews. Ratings come from G2, Capterra or Trustpilot, with the date we checked them.
Key takeaways
- A filter subscription is a memory aid, not a discount club: you pay roughly retail per filter, from about $10 to $26 at Second Nature, and the saving is the change you would otherwise forget.
- Filterbuy is the default: the widest size and type range, free shipping, and 10 percent off recurring orders, with bulk pricing up to 25 percent off on four or more.
- Second Nature, formerly FilterEasy, date stamps its filters and is the only service here built for landlords and property managers as well as homeowners.
- Get two facts right before subscribing: your exact filter size, nominal and actual dimensions differ, and your change interval, which runs from monthly for thin filters to yearly for deep media filters.
- A clogged filter is the costliest option of all. Timely changes are associated with 5 to 15 percent lower heating and cooling energy use, per the sources cited below.
Quick comparison
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We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
The best air filter subscription services
Starting priceSee website
Free planNo
Filterbuy is the category's warehouse. If a filter exists, standard sizes, 4 and 5 inch media, refrigerator and specialty replacements, custom dimensions, Filterbuy probably stocks it, with a finder tool to match your system. Its subscription is straightforward: choose the filter and an interval from one to twelve months, take 10 percent off recurring orders, and shipping is free across the continental US.
Its own guidance is a useful primer on the category's core decision: MERV 8 for dust and pollen, MERV 11 for pet dander and mold, MERV 13 for bacteria level filtration, with a standard three month interval that shortens to about 60 days in allergy households. For a first order, start here unless your situation matches a specialist below.
What we like- The widest catalogue here, pleated, carbon, HEPA type, custom sizes, and brand specific replacements
- Subscribe and Save takes 10 percent off recurring orders on intervals from 1 to 12 months
- Free shipping on every order in the continental US
- Bulk pricing cuts up to 25 percent on four or more of a size
Watch out for- Prices are per filter configuration and not published as a simple rate
- Subscription and promo discounts do not stack
- The range can overwhelm a first time buyer
- Custom and thick filters cost meaningfully more
#2Second Nature
Best for: Date stamped filters and landlords5.0/5 on
G2 (6 reviews, checked Oct 2026)
Visit secondnature.com
Starting price$10 per filter
Free planNo
Second Nature, founded as FilterEasy, built its service around the two failure points of filter changing: forgetting, and not knowing when the last change happened. The delivery solves the first; the date stamp printed on each filter solves the second, which is why landlords love it. Its property manager product, described on its own site, delivers right sized filters to residents' doors on schedule and claims the maintenance savings that follow, and it is the only entry here designed for rentals at scale.
This Old House's 2026 review puts pricing at $10 to $26 per filter with no membership fees or commitments, charged when the order generates, and EngineerFix's review calls the small premium over bulk retail a fair convenience tax. For a single home, compare its per filter price with Filterbuy's bulk rate; for anyone managing units, Second Nature has no real rival here.
What we like- Filters run $10 to $26 each by size, thickness, and MERV, with no membership fee
- Every filter is date stamped, so the change date is never a guess
- Free shipping, flexible schedules, pause or cancel any time
- The only service built for property managers, with resident programmes and lease language
Watch out for- A slight premium per filter over bulk retail, the convenience tax its reviewers name
- Residential range is narrower than Filterbuy's warehouse
- Custom and thick sizes price above the standard range
- The landlord programme's cost sits inside resident benefit packages, which tenants should read
Starting priceSee website
Free planNo
FiltersFast is the generalist veteran. A house has more filters than the furnace: the refrigerator water filter on a six month clock, humidifier pads, air purifier filters, and FiltersFast's pitch is one retailer and one set of reminders for all of them, with subscription delivery across its catalogue of brand specific replacements.
That breadth is the reason to choose it and the reason some buyers will not: the site is a warehouse, not a concierge. Households that know their part numbers save time here; households that know only their furnace size are better guided by Filterbuy's finder or Second Nature's simplicity.
What we like- One of the oldest online filter retailers, with furnace, refrigerator, humidifier, and pool filters in one account
- Subscription delivery across the range, so every filter in the house arrives on its own schedule
- Deep brand catalogue for manufacturer specific replacements
- Frequent promotions on top of subscription pricing
Watch out for- Per filter pricing only, nothing published as a subscription rate
- The huge catalogue makes the simple furnace buyer sort through a warehouse
- Shipping terms vary by order
- Subscription management is less polished than Second Nature's
Starting priceSee website
Free planNo
Air Filters Delivered is the plain option: choose filters, choose one time or recurring, and they arrive. Roundups of this category note its inclusion of oven filters alongside HVAC sizes, a small sign it thinks like a homeowner rather than a wholesaler. For a household with standard sizes and no unusual requirements, that plainness is the appeal, and the absence of a forced subscription suits buyers who want delivery without commitment.
The limits are scale and evidence. It cannot match Filterbuy's custom and specialty depth or Second Nature's landlord machinery, and it has a thinner public review trail than either, so a first order is the real test. In this category the delivered price per filter, shipping included, is the only number that matters.
What we like- One time and recurring delivery offered side by side, no forced subscription
- Covers standard and less common sizes, plus oven range filters
- Straightforward catalogue aimed at homeowners rather than contractors
- Subscription intervals adjustable to your change schedule
Watch out for- Smaller operation than Filterbuy or FiltersFast, with a narrower specialty range
- Pricing is per configuration and unpublished as a rate
- Fewer published reviews and comparisons than the leaders
- Brand specific and commercial depth is limited
Starting priceSee website
Free planNo
Nordic Pure serves the buyer whose problem is the filter itself rather than the remembering: an unusual size, a high MERV requirement, a system that needs a specific media depth. Its range runs from entry MERV 8 up through high efficiency options, with custom sizing that the big subscription brands treat as an exception.
The caution that applies to all high MERV buying applies double here: a denser filter restricts airflow, and an older or undersized blower can suffer for it, so confirm your HVAC manual's recommended rating before subscribing to MERV 13 or above. Treat Nordic Pure as the specialist shelf of this category, and compare its per filter price on your exact size before ordering.
What we like- Broad MERV ladder from basic dust control to MERV 15 class media
- Custom and odd sizes are a speciality
- Subscription delivery on the standard catalogue
- US based manufacturing focus in its range
Watch out for- Prices per configuration, no published subscription rate
- The website and tools are less refined than the category leaders
- Higher MERV media costs more and can strain older systems, check your blower first
- Fewer third party reviews than Filterbuy or Second Nature
Starting priceSee website
Free planNo
Discount Filters competes on the sticker. Its house brand and value lines target the buyer whose calculation is simple: a pleated filter is a commodity, the subscription exists to deliver it, and the cheapest delivered price per change wins. For standard sizes in standard systems, that logic is hard to fault, and pairing one time value buys with a recurring schedule covers most homes.
Commodities still vary. A flimsy frame can bow under airflow and let unfiltered air around the edges, which defeats the MERV printed on the box, so inspect the first delivery and compare pleats and frame against the filter you are replacing. If the build matches, Discount Filters earns its name.
What we like- Value positioning across furnace and refrigerator filters
- Subscription delivery available alongside one time orders
- House brand filters undercut name brand equivalents on common sizes
- Wide standard size coverage for typical homes
Watch out for- Value brands vary in build quality, check pleat count and frame rigidity on arrival
- No published subscription rate, pricing is per item
- Guidance content and finder tools trail Filterbuy
- Specialty and custom range is thinner
Starting priceSee website
Free planNo
TRU Filtered Air makes one decision for you: every filter it sells is MERV 13. Category roundups single it out for that focus, and the logic is sound for its audience, since MERV 13 is the level allergy guidance points to for trapping fine particles including bacteria sized material, and a single rating keeps sizing the only choice left.
That focus cuts both ways. MERV 13 media loads with particles faster than MERV 8, so the subscription interval matters more, and an HVAC system with a weak blower or a manufacturer cap below 13 should not use it at all. For an allergy household with a capable system, TRU's simplicity is a feature no generalist matches.
What we like- Sells only MERV 13 filters, the level reviews recommend for allergy households
- A single standard removes the MERV decision entirely
- Subscription delivery keeps the stricter change schedule MERV 13 needs
- Focused range means deep stock of common sizes
Watch out for- One rating only, no option to step down if your system struggles
- MERV 13 loads faster and needs more frequent changes, raising the annual cost
- A small specialist with a limited public track record
- Not suitable for systems whose manuals cap the filter rating below 13
#8
Amazon Subscribe & Save
Best for: Filters inside your Amazon routine
Visit amazon.com
Starting priceSee website
Free planNo
Amazon's Subscribe and Save is the route many households already use without calling it a subscription service: pick your filter from any brand on Amazon, set the interval, and take the recurring order discount. Its catalogue dwarfs every specialist here, and if your system takes a brand specific filter, Amazon may be the only subscription that stocks it.
What it lacks is everything that makes the specialists services: no help choosing a size or MERV, no printed change dates, no landlord tools, and prices that drift between deliveries. Use it when you know exactly what you need and Amazon's delivered price wins; use a specialist when you want the decision made well once and repeated.
What we like- Subscribe and Save discounts apply to recurring filter orders from many brands
- Every size and brand Amazon stocks is eligible, including the exact filter you already use
- Schedule, skip, and cancel inside the account you already manage
- Prime delivery speed when a change cannot wait
Watch out for- It is a discount programme, not a filter service: no guidance, no fit support, no date stamping
- Prices move, and a subscription can quietly renew at a higher price
- Quality depends entirely on the third party brand you pick
- Reminders are generic order notices, not maintenance prompts
How we chose
We covered the dedicated subscription brands, the generalist filter retailers with subscription programmes, and the Amazon route, using 2026 category roundups from HVAC Filter Replacement and Liquid Image, This Old House's Second Nature review, EngineerFix's Second Nature analysis, and The Run Low's allergy filter research for MERV and interval guidance. Prices in this category are per filter configuration, so entries read See website except where a review published a range.
What to look for in an air filter subscription service
Measure first, subscribe second. Filter sizes are printed on the frame of the one you have, and nominal size is not actual size: a filter labelled 16x25x1 typically measures about 15.75 by 24.75 inches. Subscribing to the wrong nominal size for a system that needs an exact fit means a year of badly fitting filters, so copy the numbers from your current filter, including thickness, before ordering from anyone.
Then set the interval by the filter, not the marketing. One inch filters generally need changing every one to three months, deeper 4 to 5 inch media every six to twelve, and allergy households and homes with pets sit at the short end of every range. Match MERV to your system as well as your lungs: higher is not automatically better if your blower cannot pull through it. Finally, compare the true annual cost against buying a year of filters in one bulk order. The subscription wins when the bulk box would sit in the garage while the old filter chokes the furnace, which, honestly, is most garages.
Frequently asked questions
How much does an air filter subscription cost?
The published anchor is Second Nature at $10 to $26 per filter, depending on size, thickness, and MERV rating, with no membership fee. Other services price per configuration: a common 1 inch pleated filter in a standard size sits in a similar band, while 4 and 5 inch media and custom sizes cost more per unit but change less often. Annual cost is per filter price times changes per year; for most homes that lands between roughly $60 and $200.
How often should filters arrive?
As often as your filter needs changing, which depends on thickness and household. Thin 1 inch filters: every one to three months, closer to monthly with pets or allergies, MERV 13 loads fastest of all. Deep 4 to 5 inch media filters: every six to twelve months. Every service here lets you set or adjust the interval, so set it from your HVAC manual and your last filter's condition, not from the default the signup page suggests, and shorten it if the filter comes out grey and matted.
What MERV rating should I choose?
MERV 8 handles dust and pollen and suits most systems. MERV 11 adds pet dander and mold spores and is the common allergy step up. MERV 13 traps bacteria sized particles and is the level allergy guidance recommends, but it restricts airflow more and needs more frequent changes. Higher is not free: check your system manual for any stated maximum, and if your blower is older or your ducts are restrictive, a MERV 11 changed on time beats a MERV 13 that starves the system.
Is a subscription cheaper than buying filters myself?
Usually not per filter. Bulk packs on sale at a warehouse store or from Filterbuy's bulk pricing are the cheapest route per unit. The subscription's value is the change happening on schedule: the energy and repair costs of a clogged filter, reviews here cite 5 to 15 percent higher heating and cooling energy use, exceed the few dollars per filter a subscription can cost extra. If you reliably buy in bulk and change on time without reminders, keep doing that; the subscription is for the rest of us.
Sources we checked (0)
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab Mia · Founder, Rankite
Shihab has 5+ years in B2B and SaaS SEO. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.
Filterbuy
FiltersFast
Air Filters Delivered
Nordic Pure
Discount Filters
TRU Filtered Air