+12%
occupants reported greater thermal comfort when plants were present in the room
Exact: approximately 12.0% more thermally comfortable
Workers were ~12% more thermally comfortable when plants were present
Cited in the literature review, a quasi-experiment controlling indoor operative temperatures found that occupants in rooms with a substantial quantity of plants were approximately 12.0% more thermally comfortable on average. They were also 1.79 to 1.95 times more likely to report thermal comfort when plants were present.
the occupants of the two rooms in which the presence of plants was alternated were both, on average, approximately 12.0% more thermally comfortable when plants were present in the room.
Related findings
90%
people in modern societies spend nine-tenths of their time indoors in built environments
Modern humans spend about 90% of their time indoors
Tonia Gray et al., 2014, International Journal of Environmental Research and Public Health
82.0%
high perceived impact of environmental design on children's behavioral and academic outcomes
Inclusive architectural design is perceived to strongly support behavioral and academic outcomes for children with neurodevelopmental disorders
Heba M. Abdou et al., 2026, Architecture
90%
people spend most of their lives indoors
People spend nearly 90% of their time indoors
Hessa Humaid Aljarwan Alshamsi et al., 2026, Indoor and Built Environment
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