Humidity readings may differ slightly between your Blueair humidifier and other hygrometers. There are many factors that can affect the humidity reading and humidity sensors can vary by ±5% or more depending on:
- Sensor quality
- Placement (near windows, vents, or doors)
- Height from the floor
- Proximity to the humidifier output
For best accuracy:
- Place sensors away from direct airflow
- Avoid placing them right next to the humidifier
- Allow several hours for readings to stabilize after adjustments
Small differences between sensors do not necessarily indicate a performance issue.