0355 Effects of a Bedside Air Purifier with Sunrise Alarm on Objective Sleep and Self-Reported Outcomes

Abstract Introduction Airborne pollutants and allergens can disturb breathing and sleep. The current study examined the effects of a bedside air purifier with sunrise alarm on objective sleep and self-reported outcomes. Methods Healthy adults (N=27; 74% female; M age=40) who reported difficulty falling or staying asleep participated in a 6-week in-home pre–post study. During baseline, participants slept without the device; during the intervention, they slept using the Blueair MiniRestful Air Purifier + Sunrise Alarm Clock. Objective sleep was measured nightly using a PSG-validated, noncontact biomotion device, SleepScore Max. Daily and end-of-period questionnaires assessed perceived sleep quality, relaxation before bed, restfulness upon waking, and perceived air quality. Analyses included multilevel regression and paired t-tests (α=.05). Results Across 1,100 nights, no significant differences were observed in objective sleep metrics. However, participants reported statistically significant improvements in multiple self-reported domains. Compared to baseline, they felt more relaxed before bed (+35%), found it easier to fall asleep (+30%), and reported higher perceived sleep quality (+47%; all ps < .001). Participants also experienced greater satisfaction with sleep (+29%), fewer nights of tossing and turning (–41%), and better perceived bedroom air quality (+64%; all ps < .001). Conclusion Although objective sleep remained stable, using a bedside air purifier with sunrise alarm was associated with meaningful improvements in perceived sleep quality, relaxation, and air freshness, suggesting potential value for enhancing the bedroom sleep environment. Support (if any) Blueair