Steelcase Series 1 vs Herman Miller Cosm High Back

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

Steelcase

Steelcase Series 1

$549 – $750

Herman Miller

Herman Miller Cosm High Back

$1,925 – $2,400

$1,376

lower starting price for Steelcase Series 1 than Herman Miller Cosm High Back at the brand stores

Differences at a glance

Steelcase Series 1Herman Miller Cosm High Back

Price: $549 – $750$1,925 – $2,400
Seat height: 16.5–21.5 in (41.9-54.6 cm); 14.75–17.75 in (37.5-45.1 cm); 17.25–22 in (43.8-55.9 cm)14.8–21.4 in (37.6–54.4 cm)
Seat depth: 15.5"D to 17.75"D (functional seat depth)15.9 in (40.4 cm)
Load capacity: 400 lb (181.4 kg); 300 lb (136.1 kg)350 lb (158.8 kg)
Arms: 4D arms (standard), height-adjustable arms or armlessLeaf Arms; Height-Adjustable Arms; Fixed Arms; No Arms; Arm Height: 7.3–11.7"
Warranty: Limited Lifetime Warranty; 12-year, multi-shift, 24/7 parts and labor12-year, 3-shift warranty, with limited exceptions

From 5 Steelcase Series 1 and 33 Herman Miller Cosm High Back user reviews, most mentioned first. Green is liked, orange is a caution.

Adjustability
Steelcase Series 18 mentions
Herman Miller Cosm High Back31 mentions
Comfort
Steelcase Series 11 mention
Herman Miller Cosm High Back31 mentions
Design
Steelcase Series 13 mentions
Herman Miller Cosm High Back23 mentions
Recline and tilt
Steelcase Series 13 mentions
Herman Miller Cosm High Back19 mentions
Price and value
Steelcase Series 18 mentions
Herman Miller Cosm High Back11 mentions
Armrests
Steelcase Series 16 mentions
Herman Miller Cosm High Back12 mentions

Which is cheaper, the Steelcase Series 1 or the Herman Miller Cosm High Back?

The Steelcase Series 1 is cheaper to start: $549 versus $1,925 for the Herman Miller Cosm High Back at the brand stores (Sep 2026).

What do owners mention most?

Adjustability for the Steelcase Series 1, and comfort for the Herman Miller Cosm High Back, based on review summaries.