What should be done if a dehumidifier in a basement runs constantly?

When a dehumidifier in a basement runs constantly, the most appropriate action is to check for high humidity or moisture problems. This is because the primary function of a dehumidifier is to remove excess moisture from the air, and if it is running continuously, it may indicate that the humidity levels are still too high for it to achieve its set point.

There could be several reasons for persistent high humidity, such as water intrusion from leaks, poor ventilation, or ground moisture seeping into the basement. By identifying and addressing these underlying issues, you can help the dehumidifier operate more effectively and prevent ongoing moisture problems, which could lead to mold growth or structural damage over time.

In contrast, replacing the unit immediately is unnecessary without first diagnosing the issue. Turning the unit off to prevent overheating could lead to increased humidity levels, negating the purpose of having the dehumidifier in the first place. Increasing the temperature in the basement may not effectively address the humidity problem and could even complicate matters if the source of moisture is not mitigated.