Calculate the risk of mold in a not heated confined space, like an unventilated crawl space, only taking the temperature and humidity in count. The formulas is inspired by a forum thread in a Swedish house building forum at byggahus.se.
For spaces that are heated and where the risk of mold is close to cold surfaces (like in a bathroom) you should use the "Mold Indicator".
- In the Home Assistant UI go to "Configuration" -> "Integrations" and click "+" and search for "Mold Risk Index", or click the badge if you have My Home Assistant activated:
- Choose a name for the sensors.
- Choose a temperature and a humidity sensor to use for the calculations.
If you want to add more sensors, just go through the configuration steps again.
Use the Limit sensor to set the level on a dehumidifier, or compare it with the actual humidity and start a dehumidifier when the humidity is getting close the limit.
The Risk Index sensor can be used for tracking historical data.
- At level 1 mold will start grow after 8 weeks or more.
- At level 2 mold will start grow in 4 to 8 weeks.
- At level 3 mold will start grow in less than 4 weeks.
