AeraMax and Boneco Replacement Filters

Every AeraMax uses two filters, and they wear out on different clocks. Most people replace the wrong one first. Get the part number right and the interval right and the unit keeps working. Get either wrong and you are either wasting money or breathing through a saturated carbon mat.

Here is the mapping, taken from the Fellowes manuals rather than from retailer listings.

AeraMax filter part numbers

Sources: the AeraMax 90, 100, 190, 290 and DX5 manuals, cross-checked against the Fellowes catalogue entries for 9287001 and 9287201.

I have not held a 200, 300, DX55 or DX95 manual. Those rows come from Fellowes describing its own filters as fitting those models, which is reliable but is not the same as reading it off the manual. Check the number on your old filter before ordering.

The three tiers use different sizes. A 9287001 will not fit a 190. Check the number on the old filter before you order.

How often to change them

The manuals for the 90, 100, 190, 290 and DX5 all say the same thing:

• True HEPA: approximately every 12 months under normal usage
• Carbon: approximately every 3 months under normal usage

Worth knowing that Fellowes contradicts itself here. The AeraMax FAQ page gives carbon at 6 months for the 3/8 inch filter and 1 year for all others. That table appears to lean toward the commercial AeraMax Pro line rather than the consumer units.

Go with the manual that came with your unit. If you no longer have it, the three-month carbon interval is the conservative choice, and carbon is the cheap one anyway.

The indicator light is not a timer

All three consumer tiers have one. Amber means change it soon, red means change it now.

The useful detail is how it decides. The Fellowes AeraMax FAQ says the indicators consider “the quality of the air they clean, as well as the period of time they are being used.” So a unit running in a dusty room calls for a filter earlier than one in a clean room, and that is correct behaviour rather than a fault.

To reset it, per the same Fellowes FAQ and the product manuals: press and hold the filter icon for three to five seconds until the unit beeps. The HEPA icon flashes amber. Press to toggle between HEPA and carbon, then hold the one you replaced until you get a short beep and the light goes out.

On generic filters

Fellowes is explicit, and it is in every manual: “Do not wash and reuse the True HEPA or Carbon Filters, they will not work effectively. Only use Fellowes brand AeraMax replacement filters.” That wording is from the AeraMax 290 manual and appears in the 100, 190 and DX5 manuals too.

For the commercial Pro line, the Fellowes FAQ goes further: damage or performance issues caused by non-Fellowes filters will void the warranty. Read your own warranty card for the consumer units rather than taking my word for what it covers.

Third-party AeraMax filters exist and sell in volume. The honest position is that Fellowes has stated a policy and voiding a warranty on a unit you have owned for four years may not worry you. Just know what the policy says before you decide.

Coverage and CADR, if you are choosing rather than replacing

These come off the individual product manuals, one per row:

The 100 and the DX5 carry identical CADR figures but different stated coverage, 100 square feet against 105. Both numbers are Fellowes’ own. Read the five square feet as marketing rather than as a measurable difference. The units themselves each have their own page: the 90, the 190 and the 290.

What they cost, and where

Every one of the six genuine parts is stocked at Home Depot. These prices were read on 6 August 2026.

A carbon pack holds four filters at a three-month interval, so one pack is a year of odour control. The HEPA element behind it runs twelve months on its own.

Watch the seller, because the spread on a single part is larger than the spread across the range. Home Depot sells the 9287201 HEPA for $35.82. Staples lists the identical part number, on the same day, at $93.49. That is 2.6 times the price for the same filter in the same box, and the gap between those two figures is bigger than the difference between a year of filters for the smallest AeraMax and a year for the largest.

Where each part is actually stocked

Six part numbers. The price you pay for any of them depends on which shop you land in far more than on which machine you own, and the gap between the best and worst listing for a single filter runs to sixty dollars. Everything below was read on 6 August 2026. Prices move, so treat these as the shape of the market rather than a quote.

If you own a 90, 100 or DX5

The cheapest pair on the whole page, and the easiest to find. Home Depot has the 9287001 HEPA at $23.95 and the 9324001 carbon four-pack at $16.63, which is $40.58 for a year.

Walmart matches the HEPA at $23.95, then says "Only 1 left". Not somewhere to send a reorder. CompSource is dearer at $28.07 and shows "Availability: 1827", the deepest confirmed stock anywhere for this part. On the carbon side Staples is $21.99 with next-day delivery quoted, and OfficeCrave is $22.21. Nordisco tops the range at $48.07 for the HEPA. Double Home Depot, same box.

If you own a 190, 200 or DX55

The awkward middle. Home Depot has the 9287101 HEPA at $27.51 and OfficeCrave has the 9324101 carbon four-pack at $26.51, which is the one place on this page where Home Depot is not the cheapest. Home Depot’s own carbon pack is 97 cents dearer at $27.48.

Sylvane sells the HEPA at $39.99. It is also the only listing for this part that commits to anything in writing, with "In Stock Ships within 1-2 business days" on the page. Worth $12 if you need it to turn up.

If you own a 290, 300 or DX95

The biggest machine, and the widest spread of the six parts by a distance. The 9287201 HEPA is $34.99 at Sylvane and $35.82 at Home Depot. It is $40.54 at OfficeCrave, $41.82 at BlueDogInk, $59.75 at Zoro, $61.99 at Quill, $93.49 at Staples, and $107.50 a filter on a second Zoro listing for the same part number. Bottom to top that is 3.1 times.

The carbon four-pack behaves better. Home Depot has the 9324201 at $30.13, OfficeCrave at $34.30, OfficeSupply.com at $35.14, and then Quill at $104.49.

Two Zoro listings carry the same manufacturer part number 1.8 times apart, which is what an abandoned SKU looks like when nobody retires it.

Quill does something stranger. Its single carbon four-pack is $104.49, or $26.12 a filter, while its own 16-filter carton is $189.19, or $11.82 a filter. The small pack costs more than twice as much per filter as the big one at the same shop on the same day.

What the spread is worth, in both directions

Shopping the cheapest option for every part saves very little. Best case across all three machines is $40.58, $54.02 and $65.12 a year, against $40.58, $54.99 and $65.95 if you buy everything at Home Depot. That is under a dollar a year of optimising.

Getting it wrong costs a great deal more. One 9287201 at Staples instead of Sylvane is $58.50 gone on a single filter, which is most of a year’s filters for a 290 bought well. Optimising saves about a dollar a year. One bad listing costs sixty. Avoid the top of the range and the rest barely matters.

Four places not to buy these

WebstaurantStore has discontinued all three HEPA filters and all three carbon packs, and every one of those six pages still shows its old price sitting above the line "This product is no longer available."

Target and Wayfair do not sell the genuine Fellowes parts at all. Search either for a part number and you get Nispira or LifeSupplyUSA compatibles, which name the Fellowes number in the title. Wayfair does carry one Fellowes-branded listing, and its part number field says 9287001 on what it describes as a carbon filter, which cannot both be true.

Lowe’s lists the parts and prices none of them. Every page says the same thing: "Find My Store for pricing and availability."

Global Industrial prices the carbon packs at "Sold in packages of 4" on a part number that is itself a four-pack, so $163.80 is either four filters or sixteen and the page does not resolve it. Its stock line, "Ships Same Day", is one of the better ones on this list, which makes the ambiguity more annoying.

Cartons are the trap you would expect to be the bargain

Bulk normally means cheaper per unit. Not here. Home Depot’s single 9324201 four-pack works out at $7.53 a filter, while the 16-filter carton runs $10.67 a filter at Staples and $11.82 at Quill. Buying four times as many costs you between 42% and 57% more per filter. Order the small pack.

Boneco W200: no filter at all

This is the part people get wrong when they search for a “W200 filter.” There isn’t one.

The W200 is an evaporative air washer, so the air passes over a wet surface rather than through a filter medium. What it has instead is three consumables, and Boneco publishes an interval for each:

Boneco lists the AW200 as fitting the W200, W300 and W400 air washers plus the H300, H320 and H400 hybrids, so if you own more than one Boneco you can buy in quantity.

A note on the silver stick. Boneco’s own wording is replace every season, not once a year. For a humidifier used through one heating season those come to the same thing. If you run it year round they do not.

The A7417 instructions are specific: one packet in a litre of hot water, soak the base for sixty minutes. A three-pack is three descales, which at the stated interval is roughly two months of use.

Cleaning schedule, from the W200 manual: clean the water base, drum and evaporator mat every two weeks. Clean the fan and inner area yearly. After three days without operation, empty the base and refill with fresh water.

That last one catches people out after a holiday. Standing water in a switched-off humidifier is exactly the condition you are trying to avoid. More on why in air washer vs humidifier.

Components are dishwasher safe, which makes the two-week clean less of a chore than it sounds.

Boneco H680: the hybrid, and the gap in the record

The H680 is the hybrid, so it does have a real filter. Accessories listed on the Boneco H680 page are the A681 hybrid filter, the AH700 evaporator mat, AH705 silencing grease, the A7017 silver stick and A7417 CalcOff.

The A681 is a combined HEPA and activated carbon filter. Boneco describes the HEPA element as removing over 99% of PM2.5 and fine dust, with the carbon layer handling smoke, VOCs, formaldehyde and odours. It fits the H680 and H700.

Boneco does not publish a replacement interval for the A681. I checked its own product page for that part and it states compatibility and nothing about frequency. One US retailer, Pure n Natural Systems, tells customers to replace it annually. That is a retailer’s advice rather than a manufacturer specification, and I am reporting it as such because I could not find Boneco saying it anywhere.

The AH700 is in the same position. No US listing, no published interval that I could reach, and do not assume it matches the AW200’s 24 months, because it is a different part for a different machine.

If you have the H680 manual in front of you and it states an interval, that beats everything above, and I would like to know what it says.

The part nobody tells you

Genuine Boneco consumables are effectively unavailable in the United States as of August 3, 2026.

Boneco’s own online store is Swiss and prices everything in Swiss francs. There is no US storefront at boneco.us. The official BONECO brand store on Amazon US lists eight genuine accessories, including the A681, and every single one shows as currently unavailable. The genuine AW200 and A7017 have no BONECO-branded US listing at all, only European ones on the German, Spanish and Belgian sites.

What is in stock domestically is third-party compatibles. There are plenty of them, they are well reviewed, and I am not linking them, because the manufacturer documentation for both brands on this page says to use branded parts and washing or substituting them voids the performance claim. Recommending a compatible while quoting that instruction would be arguing with myself.

If you need a genuine Boneco part in the US right now, the honest answer is to contact Boneco directly and ask about distribution, or to buy from Europe and pay the shipping. Neither is satisfying. If Boneco sorts out US distribution I will update this page the week it happens.

Which machine to own in the first place, and what each one is actually rated for, is on the air care hub.

I ran Corner Nook as a contract-grade furniture store from 2020. It now covers furniture and equipment for small spaces. More about who runs it. Every part number here came from a manufacturer manual, and every listing was checked for stock, seller and review history on the date above.