diff --git a/homeassistant/components/homekit_controller/climate.py b/homeassistant/components/homekit_controller/climate.py
index 2cbd8f6d700..54d11b3b09e 100644
--- a/homeassistant/components/homekit_controller/climate.py
+++ b/homeassistant/components/homekit_controller/climate.py
@@ -4,7 +4,8 @@ import logging
 from homeassistant.components.climate import ClimateDevice
 from homeassistant.components.climate.const import (
     STATE_COOL, STATE_HEAT, STATE_IDLE, SUPPORT_OPERATION_MODE,
-    SUPPORT_TARGET_TEMPERATURE, SUPPORT_TARGET_HUMIDITY)
+    SUPPORT_TARGET_TEMPERATURE, SUPPORT_TARGET_HUMIDITY,
+    SUPPORT_TARGET_HUMIDITY_HIGH, SUPPORT_TARGET_HUMIDITY_LOW)
 from homeassistant.const import ATTR_TEMPERATURE, STATE_OFF, TEMP_CELSIUS
 
 from . import KNOWN_DEVICES, HomeKitEntity
@@ -43,6 +44,10 @@ class HomeKitClimateDevice(HomeKitEntity, ClimateDevice):
         self._target_temp = None
         self._current_humidity = None
         self._target_humidity = None
+        self._min_target_temp = None
+        self._max_target_temp = None
+        self._min_target_humidity = None
+        self._max_target_humidity = None
         super().__init__(*args)
 
     def get_characteristic_types(self):
@@ -86,9 +91,23 @@ class HomeKitClimateDevice(HomeKitEntity, ClimateDevice):
     def _setup_temperature_target(self, characteristic):
         self._features |= SUPPORT_TARGET_TEMPERATURE
 
+        if 'minValue' in characteristic:
+            self._min_target_temp = characteristic['minValue']
+
+        if 'maxValue' in characteristic:
+            self._max_target_temp = characteristic['maxValue']
+
     def _setup_relative_humidity_target(self, characteristic):
         self._features |= SUPPORT_TARGET_HUMIDITY
 
+        if 'minValue' in characteristic:
+            self._min_target_humidity = characteristic['minValue']
+            self._features |= SUPPORT_TARGET_HUMIDITY_LOW
+
+        if 'maxValue' in characteristic:
+            self._max_target_humidity = characteristic['maxValue']
+            self._features |= SUPPORT_TARGET_HUMIDITY_HIGH
+
     def _update_heating_cooling_current(self, value):
         self._state = MODE_HOMEKIT_TO_HASS.get(value)
 
@@ -152,6 +171,20 @@ class HomeKitClimateDevice(HomeKitEntity, ClimateDevice):
         """Return the temperature we try to reach."""
         return self._target_temp
 
+    @property
+    def min_temp(self):
+        """Return the minimum target temp."""
+        if self._max_target_temp:
+            return self._min_target_temp
+        return super().min_temp
+
+    @property
+    def max_temp(self):
+        """Return the maximum target temp."""
+        if self._max_target_temp:
+            return self._max_target_temp
+        return super().max_temp
+
     @property
     def current_humidity(self):
         """Return the current humidity."""
@@ -162,6 +195,16 @@ class HomeKitClimateDevice(HomeKitEntity, ClimateDevice):
         """Return the humidity we try to reach."""
         return self._target_humidity
 
+    @property
+    def min_humidity(self):
+        """Return the minimum humidity."""
+        return self._min_target_humidity
+
+    @property
+    def max_humidity(self):
+        """Return the maximum humidity."""
+        return self._max_target_humidity
+
     @property
     def current_operation(self):
         """Return current operation ie. heat, cool, idle."""
diff --git a/tests/components/homekit_controller/common.py b/tests/components/homekit_controller/common.py
index 43003251218..84abce0a1fe 100644
--- a/tests/components/homekit_controller/common.py
+++ b/tests/components/homekit_controller/common.py
@@ -180,6 +180,12 @@ async def setup_accessories_from_file(hass, path):
                     char.description = char_data['description']
                 if 'value' in char_data:
                     char.value = char_data['value']
+                if 'minValue' in char_data:
+                    char.minValue = char_data['minValue']
+                if 'maxValue' in char_data:
+                    char.maxValue = char_data['maxValue']
+                if 'valid-values' in char_data:
+                    char.valid_values = char_data['valid-values']
                 service.characteristics.append(char)
 
             accessory.services.append(service)
diff --git a/tests/components/homekit_controller/specific_devices/test_ecobee3.py b/tests/components/homekit_controller/specific_devices/test_ecobee3.py
index a7e449ddbe4..780904588c6 100644
--- a/tests/components/homekit_controller/specific_devices/test_ecobee3.py
+++ b/tests/components/homekit_controller/specific_devices/test_ecobee3.py
@@ -10,6 +10,7 @@ from homekit import AccessoryDisconnectedError
 
 from homeassistant.components.climate.const import (
     SUPPORT_TARGET_TEMPERATURE, SUPPORT_TARGET_HUMIDITY,
+    SUPPORT_TARGET_HUMIDITY_HIGH, SUPPORT_TARGET_HUMIDITY_LOW,
     SUPPORT_OPERATION_MODE)
 from tests.components.homekit_controller.common import (
     FakePairing, device_config_changed, setup_accessories_from_file,
@@ -32,9 +33,15 @@ async def test_ecobee3_setup(hass):
     assert climate_state.attributes['friendly_name'] == 'HomeW'
     assert climate_state.attributes['supported_features'] == (
         SUPPORT_TARGET_TEMPERATURE | SUPPORT_TARGET_HUMIDITY |
+        SUPPORT_TARGET_HUMIDITY_HIGH | SUPPORT_TARGET_HUMIDITY_LOW |
         SUPPORT_OPERATION_MODE
     )
 
+    assert climate_state.attributes['min_temp'] == 7.2
+    assert climate_state.attributes['max_temp'] == 33.3
+    assert climate_state.attributes['min_humidity'] == 20
+    assert climate_state.attributes['max_humidity'] == 50
+
     occ1 = entity_registry.async_get('binary_sensor.kitchen')
     assert occ1.unique_id == 'homekit-AB1C-56'
 
diff --git a/tests/components/homekit_controller/test_climate.py b/tests/components/homekit_controller/test_climate.py
index 4c0a5debb65..e444a25dca6 100644
--- a/tests/components/homekit_controller/test_climate.py
+++ b/tests/components/homekit_controller/test_climate.py
@@ -138,6 +138,8 @@ async def test_climate_read_thermostat_state(hass, utcnow):
     assert state.state == 'heat'
     assert state.attributes['current_temperature'] == 19
     assert state.attributes['current_humidity'] == 50
+    assert state.attributes['min_temp'] == 7
+    assert state.attributes['max_temp'] == 35
 
     # Simulate that cooling is on
     helper.characteristics[TEMPERATURE_CURRENT].value = 21