diff --git a/homeassistant/components/homekit/type_humidifiers.py b/homeassistant/components/homekit/type_humidifiers.py
index a468efd42b4..42115132420 100644
--- a/homeassistant/components/homekit/type_humidifiers.py
+++ b/homeassistant/components/homekit/type_humidifiers.py
@@ -98,6 +98,10 @@ class HumidifierDehumidifier(HomeAccessory):
             serv_humidifier_dehumidifier.configure_char(
                 CHAR_TARGET_HUMIDIFIER_DEHUMIDIFIER,
                 value=self._hk_device_class,
+                properties={
+                    PROP_MIN_VALUE: self._hk_device_class,
+                    PROP_MAX_VALUE: self._hk_device_class,
+                },
                 valid_values={
                     HC_HASS_TO_HOMEKIT_DEVICE_CLASS_NAME[
                         device_class
diff --git a/tests/components/homekit/test_type_humidifiers.py b/tests/components/homekit/test_type_humidifiers.py
index 49b3ee72784..e5cbf978c83 100644
--- a/tests/components/homekit/test_type_humidifiers.py
+++ b/tests/components/homekit/test_type_humidifiers.py
@@ -16,6 +16,7 @@ from homeassistant.components.homekit.const import (
     PROP_VALID_VALUES,
 )
 from homeassistant.components.homekit.type_humidifiers import HumidifierDehumidifier
+from homeassistant.components.humidifier import HumidifierDeviceClass
 from homeassistant.components.humidifier.const import (
     ATTR_HUMIDITY,
     ATTR_MAX_HUMIDITY,
@@ -394,7 +395,9 @@ async def test_humidifier_as_dehumidifier(hass, hk_driver, events, caplog):
     """Test an invalid char_target_humidifier_dehumidifier from HomeKit."""
     entity_id = "humidifier.test"
 
-    hass.states.async_set(entity_id, STATE_OFF)
+    hass.states.async_set(
+        entity_id, STATE_OFF, {ATTR_DEVICE_CLASS: HumidifierDeviceClass.HUMIDIFIER}
+    )
     await hass.async_block_till_done()
     acc = HumidifierDehumidifier(
         hass, hk_driver, "HumidifierDehumidifier", entity_id, 1, None
@@ -427,3 +430,44 @@ async def test_humidifier_as_dehumidifier(hass, hk_driver, events, caplog):
     await hass.async_block_till_done()
     assert "TargetHumidifierDehumidifierState is not supported" in caplog.text
     assert len(events) == 0
+
+
+async def test_dehumidifier_as_humidifier(hass, hk_driver, events, caplog):
+    """Test an invalid char_target_humidifier_dehumidifier from HomeKit."""
+    entity_id = "humidifier.test"
+
+    hass.states.async_set(
+        entity_id, STATE_OFF, {ATTR_DEVICE_CLASS: HumidifierDeviceClass.DEHUMIDIFIER}
+    )
+    await hass.async_block_till_done()
+    acc = HumidifierDehumidifier(
+        hass, hk_driver, "HumidifierDehumidifier", entity_id, 1, None
+    )
+    hk_driver.add_accessory(acc)
+
+    await acc.run()
+    await hass.async_block_till_done()
+
+    assert acc.char_target_humidifier_dehumidifier.value == 2
+
+    # Set from HomeKit
+    char_target_humidifier_dehumidifier_iid = (
+        acc.char_target_humidifier_dehumidifier.to_HAP()[HAP_REPR_IID]
+    )
+
+    hk_driver.set_characteristics(
+        {
+            HAP_REPR_CHARS: [
+                {
+                    HAP_REPR_AID: acc.aid,
+                    HAP_REPR_IID: char_target_humidifier_dehumidifier_iid,
+                    HAP_REPR_VALUE: 1,
+                },
+            ]
+        },
+        "mock_addr",
+    )
+
+    await hass.async_block_till_done()
+    assert "TargetHumidifierDehumidifierState is not supported" in caplog.text
+    assert len(events) == 0