Comparison
Aeron vs Liberty
Herman Miller vs Humanscale — full spec comparison
Bottom line
Aeron offers three sizes and extensive options; Liberty offers Form-Sensing mesh with Diffrient-style weight-sensitive recline and fewer dials.
Comparing 2 chairs across key specs.
Herman Miller
Aeron
Brand
Herman Miller
Model
Aeron
Era produced
1994–Present (Remastered 2016)
Discontinued
No
MSRP (new)
$1,795
Avg refurbished
$850
Avg used
$450
Height range
4'8"–6'7"
Weight capacity
350 lbs
Seat width
20.25"
Seat depth
17"
Backrest height
23"
Seat material
Full Mesh
Armrests
4D Articulating
Forward tilt
Yes
Lumbar
Asymmetrical
Headrest
Aftermarket Only
Cylinder
Top-activated pneumatic (height range varies by size/cylinder)
Caster stem
11mm × 22mm standard
Frame
Die-cast aluminum + glass-reinforced nylon
Tilt / lock
Harmonic 2 tilt; tilt limiter / forward seat-angle options
Arm adjustability
Fully adjustable (height, width, depth, pivot) on common configs
Humanscale
Liberty
Brand
Humanscale
Model
Liberty
Era produced
2006–Present
Discontinued
No
MSRP (new)
$1,199
Avg refurbished
$520
Avg used
$300
Height range
5'0"–6'4"
Weight capacity
400 lbs
Seat width
19.5"
Seat depth
17.5"
Backrest height
22"
Seat material
Full Mesh
Armrests
3D
Forward tilt
No
Lumbar
Integrated
Headrest
Factory
Cylinder
Top-activated pneumatic (wide cylinder options)
Caster stem
11mm × 22mm standard
Frame
Aluminum / polymer + Form-Sensing mesh
Tilt / lock
Weight-sensitive recline (Diffrient / Freedom family controls philosophy)
Arm adjustability
Synchronous-style / adjustable arms on common configs (not full 4D)
| Spec | Herman MillerAeron | HumanscaleLiberty |
|---|---|---|
| Brand | Herman Miller | Humanscale |
| Model | Aeron | Liberty |
| Era produced | 1994–Present (Remastered 2016) | 2006–Present |
| Discontinued | No | No |
| MSRP (new) | $1,795 | $1,199 |
| Avg refurbished | $850 | $520 |
| Avg used | $450 | $300 |
| Height range | 4'8"–6'7" | 5'0"–6'4" |
| Weight capacity | 350 lbs | 400 lbs |
| Seat width | 20.25" | 19.5" |
| Seat depth | 17" | 17.5" |
| Backrest height | 23" | 22" |
| Seat material | Full Mesh | Full Mesh |
| Armrests | 4D Articulating | 3D |
| Forward tilt | Yes | No |
| Lumbar | Asymmetrical | Integrated |
| Headrest | Aftermarket Only | Factory |
| Cylinder | Top-activated pneumatic (height range varies by size/cylinder) | Top-activated pneumatic (wide cylinder options) |
| Caster stem | 11mm × 22mm standard | 11mm × 22mm standard |
| Frame | Die-cast aluminum + glass-reinforced nylon | Aluminum / polymer + Form-Sensing mesh |
| Tilt / lock | Harmonic 2 tilt; tilt limiter / forward seat-angle options | Weight-sensitive recline (Diffrient / Freedom family controls philosophy) |
| Arm adjustability | Fully adjustable (height, width, depth, pivot) on common configs | Synchronous-style / adjustable arms on common configs (not full 4D) |
| Buy |