Herman Miller Sayl Chair

Which model this is

Sayl is a family name, not one SKU. Herman Miller sells the work chair with the suspension mid-back, upholstered mid-back and upholstered high-back versions, plus side chairs, stools, and a separate Sayl Gaming Chair that is a different product. The price-book model families for Sayl work chairs run AS1SA, AS2SA, AS1SB, AS2SB, AS1SC and AS1SD, with AS7SA–AS7SD for stools. The store listing for this chair shows Item No. 100099624 and manufacturer SKU AS1SA22HAN265C798639223.

Configuration matters more than the model number when you compare listings. Arms come as none, fixed, height adjustable or fully adjustable 4D, and the published ranges are far apart: fixed arms sit 9.4 in above the seat and do not move, height-adjustable arms span 6.7 in to 10.8 in, and the fully adjustable arms move 4 in vertically, 1.38 in horizontally, 2 in front to back, and pivot 11° in each direction. Seat depth adjusts 16–18 in, though Herman Miller’s store and product sheet disagree on the fixed-depth option, listing 16 in and 16.5 in respectively.

How it sits over a workday

TechGearLab’s November 2018 test is the most complete public test of this exact chair. It scored 76/100, with adjustability 8.5, durability 8.0, ease of assembly 10.0 and comfort 6.7, and comfort carries half the weight. Every tester was comfortable for at least five hours and four sat a full 8-to-10-hour day. What held comfort back was the back itself, which testers found polarizing and short enough that the taller ones settled for half-days. The same test recorded wear on the front padding of the armrests and a height lever that felt flimsy.

Wirecutter lists the Sayl as its pick for comfort against price. Consumer Reports lab-tests it inside a 24-chair program, but its scores for ergonomics, comfort, ease of use and ease of assembly sit behind a membership, and no instrumented test from RTINGS exists for this model. Herman Miller’s own comparison chart rates the Aeron at 300 lb, so the 350 lb rating here is not a family-wide number.

What owners report

Owner experience splits into two camps. People who compare it with an Aeron call the Sayl the more forgiving chair: they describe the Aeron as punishing anything short of perfect posture, and one owner at 6'1" reports full days in the Sayl while finding the Aeron’s seat pan harder. Others call it good for an hour or so and note that it offers less customization than the rest of the range. Nobody has published a failure rate for this chair, so treat what follows as signals rather than defect odds.

The squeak is the most-documented Sayl problem. A dedicated thread on r/hermanmiller describes a common squeak from the suspension and tilt interface on older chairs, with a fix that involves greasing three screws. The thread is explicit that WD-40 is not a substitute for lubricant and that the screws must be tight enough to prevent any movement. Herman Miller publishes no fix for current-production chairs, and the owner advice is framed for older ones.

Build quality on delivery is the next complaint. One owner asked for a replacement over perceived build quality and was told the next chair would be the same and within tolerances, so the chair went back; another thread records Herman Miller refusing a second replacement on the same logic. Warranty service is a third thread: a 2024 buyer who paid $1,200–$1,300 reports a broken arm that would not stay locked, a repair quoted at about three to four weeks, and 30 days with no tracking number. The same thread holds an owner who received a FedEx label and a replacement chair after sending video.

Warranty, upkeep and repairs

The warranty is the strongest argument for buying new: 12 years, 3 shifts, parts and labor, 24-hour coverage, and Herman Miller covers the service cost when the work is done in the US and Canada. Casters, pneumatic cylinders, tilts and all moving mechanisms fall inside that term. Two carve-outs matter on this chair. The Sayl knit back cover is listed as a 5-year materials item, and the 12-year fabric list names Crepe and Rhythm but not Gemma, so the term on Gemma is unconfirmed. The warranty is also non-transferable, which is why a third-party refurbisher replaces it: Madison Seating states its Sayls carry a 10-year Madison Seating warranty and no Herman Miller coverage.

Herman Miller publishes both a care guide and an adjustment guide for the chair. The hard rule in the care guide concerns fabric: do not apply water or any liquid solution, because Herman Miller says wetting it may cause permanent damage. Vacuum with an upholstery attachment and spot clean instead. The polished aluminum base is maintained with paste wax, monthly in humid salt-air climates and every three months elsewhere. Adjustments are owner-level work, and the adjustment guide names a control for seat height, seat depth, tilt tension, forward tilt, tilt limiter, lumbar height, arm height, arm angle, arm width and arm depth. Herman Miller’s fit guidance is two to three inches of clearance between the back of your knees and the seat edge.

Is it worth it?

The decision is mostly a price decision. Herman Miller’s own store listed the selected configuration at $1,275 on 2026-10-05, earlier crawls of the same page showed $1,225, and TechGearLab’s November 2018 test put the list price at $1,150. Madison Seating lists refurbished Sayls at $349.11 in white and $399.11 in black, both shown out of stock, both with fixed arms and a 10-year third-party warranty instead of Herman Miller’s. A New York-area Craigslist listing offered Sayl chairs at $375 each against a stated $980 retail, and Herman Miller’s price book allows work-chair upgrades worth as much as $240.

At refurbished money the Sayl is easy to justify. At $1,275 new it is not, because Madison Seating’s refurbished Aeron Size C sits at $619.11 while the Sayl’s measured strengths are adjustability and convenience rather than comfort. Buy new if you want Herman Miller’s service network and the 12-year warranty, and buy it at the low end of what sellers ask. If you are taller than about 5'8", try a taller-back chair first; the short backrest is what cost this one TechGearLab’s taller testers after half a day.

Running costs after the purchase are small. There are no consumables and no power draw. The realistic expenses are upholstery replacement, caster replacement and return shipping, and a return means splitting the chair from its base, which one owner found awkward.

Sources

Manufacturer:

• Sayl Chair product page, Herman Miller store
• Sayl Chairs product sheet (PDF)
• Sayl Chairs adjustment guide (PDF)
• Sayl Chair care and maintenance guide (PDF)
• Warranty and service, Herman Miller
• MillerKnoll US and Canada limited warranty (PDF)
• Sayl product details, Herman Miller
• Sayl design story, Herman Miller
• Sayl Chairs price book (PDF)
• Comparing Chairs (PDF), Herman Miller
• Product instructions portal, Herman Miller

Independent reviews:

• Herman Miller Sayl test, TechGearLab
• Office chair recommendations, Wirecutter
• Herman Miller Sayl Chair furniture review, Consumer Reports
• Herman Miller Sayl Gaming Chair review, TechRadar

Owner reports:

• Is the Sayl chair really that bad? (r/hermanmiller)
• Sayl Squeaks (r/hermanmiller)
• Aeron vs Sayl Chair (r/hermanmiller)
• Is the Herman Miller Sayl Chair worth it? (r/OfficeChairs)
• Opinions on Sayl? (r/hermanmiller)
• Warranty service experience (r/hermanmiller)
• Separating the chair from the base for a return (r/hermanmiller)

Retail and refurb:

• Refurbished Sayl in white, Madison Seating
• Refurbished Sayl in black, Madison Seating
• Refurbished Aeron Size C, Madison Seating
• Used Sayl chairs listing, Craigslist