Dehumidifier Mold Risk Score Calculator

Score moisture-driven mold risk from humidity, condensation, and ventilation signals, then prioritize your fixes.

High humidity is only one driver. Condensation, leaks, and poor ventilation are often stronger signals.
This tool provides guidance, not a medical or laboratory mold assessment.
If you have severe symptoms, widespread growth, or recent flooding, consider a professional evaluation.

Inputs

Current Indoor RH (optional)

Ventilation

Indicators

Musty odor Frequent window/wall condensation Visible spots or growth Water stains / bubbling paint Recent leak or plumbing issue Flooding / major water event

Results

Risk Level

Medium

Top Drivers

Protective Factors

Prioritized Next Steps

Check Condensation Risk

How This Score Works

Scores increase when indicators suggest persistent moisture (condensation, leaks, stains) and when ventilation is poor.
Optional RH is used as supporting evidence. A single RH reading may miss spikes, so it is weighted less than direct moisture indicators.
This tool is designed to be conservative: visible growth or flooding should trigger urgent action regardless of RH.