ErgoChair Pro vs World Office Chair: which is safer?
Humanscale World Office Chair is our pick: better on PFAS and on the overall hazard picture.
Autonomous
ErgoChair Pro
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
LikelyFlame-retardant chemicals in upholstery fabric
PossibleFormaldehyde-releasing resins in fabric finish and adhesives
PossibleVolatile organic compounds (VOCs) from off-gassing
Our pick
Humanscale
World Office Chair
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossiblePolyurethane foam off-gassing (VOCs)
PossibleMicroplastics from foam or synthetic upholstery wear
Where these two actually differ
- We flag Flame-retardant chemicals in upholstery fabric, Formaldehyde-releasing resins in fabric finish and adhesives and Volatile organic compounds (VOCs) from off-gassing on the Autonomous and not on the Humanscale.
- We flag Polyurethane foam off-gassing (VOCs) and Microplastics from foam or synthetic upholstery wear on the Humanscale and not on the Autonomous.
- The Autonomous is Steel frame, upholstered fabric seat/back, plastic/aluminum components where the Humanscale is Steel, aluminum, plastic (polyurethane foam), fabric upholstery, which is most of the difference in these two grades.
- These two are level, close enough that price and fit should decide it rather than our grade.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More office chairs: see the full ranking