diff --git a/bundles/org.openhab.binding.homematic/src/main/java/org/openhab/binding/homematic/internal/converter/type/QuantityTypeConverter.java b/bundles/org.openhab.binding.homematic/src/main/java/org/openhab/binding/homematic/internal/converter/type/QuantityTypeConverter.java
index d1647c031..2e6ca6ae0 100644
--- a/bundles/org.openhab.binding.homematic/src/main/java/org/openhab/binding/homematic/internal/converter/type/QuantityTypeConverter.java
+++ b/bundles/org.openhab.binding.homematic/src/main/java/org/openhab/binding/homematic/internal/converter/type/QuantityTypeConverter.java
@@ -104,6 +104,8 @@ public class QuantityTypeConverter extends AbstractTypeConverter<QuantityType<?
                 return new QuantityType<>(number, SIUnits.CELSIUS);
             case "V":
                 return new QuantityType<>(number, Units.VOLT);
+            case "% rH":
+            case "% rF":
             case "%":
                 return new QuantityType<>(number, Units.PERCENT);
             case "mHz":
diff --git a/bundles/org.openhab.binding.homematic/src/main/java/org/openhab/binding/homematic/internal/type/MetadataUtils.java b/bundles/org.openhab.binding.homematic/src/main/java/org/openhab/binding/homematic/internal/type/MetadataUtils.java
index 8f62c70fc..11e2481e0 100644
--- a/bundles/org.openhab.binding.homematic/src/main/java/org/openhab/binding/homematic/internal/type/MetadataUtils.java
+++ b/bundles/org.openhab.binding.homematic/src/main/java/org/openhab/binding/homematic/internal/type/MetadataUtils.java
@@ -311,6 +311,8 @@ public class MetadataUtils {
                     case "V":
                         return ITEM_TYPE_NUMBER + ":ElectricPotential";
                     case "100%":
+                    case "% rH":
+                    case "% rF":
                     case "%":
                         return ITEM_TYPE_NUMBER + ":Dimensionless";
                     case "mHz":