Herman Miller Aeron vs Herman Miller Cosm Mid Back

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

Herman Miller

Herman Miller Cosm Mid Back

$2,030

$255

lower starting price for Herman Miller Aeron than Herman Miller Cosm Mid Back at the brand stores

Differences at a glance

Herman Miller AeronHerman Miller Cosm Mid Back

Price: $1,775 – $2,840$2,030
Seat height: 14.4–19.3 in (36.6–49 cm); 14.8–22.8 in (37.6–57.9 cm); 15.8–22.8 in (40.1–57.9 cm)14.875–21 in
Seat depth: 16 / 17 / 18.5 in (40.6 / 43.2 / 47.0 cm)15.5 in
Load capacity: 300 / 350 / 400 lb (136 / 158.8 / 181.4 kg)350 lb
Warranty: 12-year, 3-shift warranty, with limited exceptions12 years

Which is cheaper, the Herman Miller Aeron or the Herman Miller Cosm Mid Back?

The Herman Miller Aeron is cheaper to start: $1,775 versus $2,030 for the Herman Miller Cosm Mid Back at the brand stores (Oct 2026).