Herman Miller Aeron vs SIHOO M56C

Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.

Herman Miller

Herman Miller Aeron

$1,775 – $2,840

SIHOO

SIHOO M56C

$184.99

$1,590.01

lower starting price for SIHOO M56C than Herman Miller Aeron at the brand stores

Differences at a glance

Herman Miller AeronSIHOO M56C

Price: $1,775 – $2,840$184.99
Seat depth: 16 / 17 / 18.5 in (40.6 / 43.2 / 47.0 cm)17.1 in (≈ 43.4 cm)
Load capacity: 300 / 350 / 400 lb (136 / 158.8 / 181.4 kg)300 lb (≈ 136 kg)
Recline: Harmonic 2 Tilt; options: Standard/Basic tilt, Tilt Limiter, Tilt Limiter with Seat AngleMaximum tilt angle of 125° (reclining lock with 1 position)
Arms: Arm height 7.5–11.5 in (adjustable arms); 8.5 in (fixed arms); Options: Fully Adjustable Arms, Height-Adjustable Arms with Pivot, Height-Adjustable Arms, No Arms, Stationary Arms; Arm Height 7.5–11.5 in (Fully Adjustable Arms, specs page)Armrests adjustable up and down
Headrest: None offered by Herman MillerHeadrest moves up and down and tilts
Lumbar support: Options: No additional support, PostureFit, Adjustable Lumbar Support, Adjustable PostureFit SLUltra-wide dynamic lumbar support: a flexible elastic plate that moves with the backrest (no manual adjustment listed)
Warranty: 12-year, 3-shift warranty, with limited exceptions3 years

Which is cheaper, the Herman Miller Aeron or the SIHOO M56C?

The SIHOO M56C is cheaper to start: $184.99 versus $1,775 for the Herman Miller Aeron at the brand stores (Oct 2026).

Which has a headrest?

Only the SIHOO M56C (as standard); the Herman Miller Aeron does not offer one.