Do oil based heater dry out the air in the room?

Oil-based heaters do not significantly dry out the air in a room. Unlike traditional electric heaters, they radiate heat rather than blowing hot air, which helps maintain humidity levels. However, any heating system can lead to a slight decrease in humidity over time, especially in colder months when indoor air is typically drier. To combat this, you can use a humidifier or place a bowl of water near the heater to add moisture back into the air.