diff --git a/homeassistant/components/google_assistant/trait.py b/homeassistant/components/google_assistant/trait.py
index 189d1354e26188..bb03e796d9142c 100644
--- a/homeassistant/components/google_assistant/trait.py
+++ b/homeassistant/components/google_assistant/trait.py
@@ -484,6 +484,11 @@ def supported(domain, features, device_class, _):
         if domain == water_heater.DOMAIN and features & WaterHeaterEntityFeature.ON_OFF:
             return True
 
+        if domain == climate.DOMAIN and features & (
+            ClimateEntityFeature.TURN_OFF | ClimateEntityFeature.TURN_ON
+        ):
+            return True
+
         return domain in (
             group.DOMAIN,
             input_boolean.DOMAIN,
diff --git a/tests/components/google_assistant/__init__.py b/tests/components/google_assistant/__init__.py
index 6fc1c9f580dae2..931f4d25522556 100644
--- a/tests/components/google_assistant/__init__.py
+++ b/tests/components/google_assistant/__init__.py
@@ -305,6 +305,7 @@ def should_2fa(self, state):
         "id": "climate.hvac",
         "name": {"name": "Hvac"},
         "traits": [
+            "action.devices.traits.OnOff",
             "action.devices.traits.TemperatureSetting",
             "action.devices.traits.FanSpeed",
         ],
@@ -326,7 +327,10 @@ def should_2fa(self, state):
     {
         "id": "climate.heatpump",
         "name": {"name": "HeatPump"},
-        "traits": ["action.devices.traits.TemperatureSetting"],
+        "traits": [
+            "action.devices.traits.OnOff",
+            "action.devices.traits.TemperatureSetting",
+        ],
         "type": "action.devices.types.THERMOSTAT",
         "willReportState": False,
     },
@@ -334,6 +338,7 @@ def should_2fa(self, state):
         "id": "climate.ecobee",
         "name": {"name": "Ecobee"},
         "traits": [
+            "action.devices.traits.OnOff",
             "action.devices.traits.TemperatureSetting",
             "action.devices.traits.FanSpeed",
         ],
diff --git a/tests/components/google_assistant/test_google_assistant.py b/tests/components/google_assistant/test_google_assistant.py
index 6d3a9b34cce985..4fb6f50a5e69de 100644
--- a/tests/components/google_assistant/test_google_assistant.py
+++ b/tests/components/google_assistant/test_google_assistant.py
@@ -233,12 +233,14 @@ async def test_query_climate_request(
     assert len(devices) == 3
     assert devices["climate.heatpump"] == {
         "online": True,
+        "on": True,
         "thermostatTemperatureSetpoint": 20.0,
         "thermostatTemperatureAmbient": 25.0,
         "thermostatMode": "heat",
     }
     assert devices["climate.ecobee"] == {
         "online": True,
+        "on": True,
         "thermostatTemperatureSetpointHigh": 24,
         "thermostatTemperatureAmbient": 23,
         "thermostatMode": "heatcool",
@@ -247,6 +249,7 @@ async def test_query_climate_request(
     }
     assert devices["climate.hvac"] == {
         "online": True,
+        "on": True,
         "thermostatTemperatureSetpoint": 21,
         "thermostatTemperatureAmbient": 22,
         "thermostatMode": "cool",
@@ -294,12 +297,14 @@ async def test_query_climate_request_f(
     assert len(devices) == 3
     assert devices["climate.heatpump"] == {
         "online": True,
+        "on": True,
         "thermostatTemperatureSetpoint": -6.7,
         "thermostatTemperatureAmbient": -3.9,
         "thermostatMode": "heat",
     }
     assert devices["climate.ecobee"] == {
         "online": True,
+        "on": True,
         "thermostatTemperatureSetpointHigh": -4.4,
         "thermostatTemperatureAmbient": -5,
         "thermostatMode": "heatcool",
@@ -308,6 +313,7 @@ async def test_query_climate_request_f(
     }
     assert devices["climate.hvac"] == {
         "online": True,
+        "on": True,
         "thermostatTemperatureSetpoint": -6.1,
         "thermostatTemperatureAmbient": -5.6,
         "thermostatMode": "cool",
diff --git a/tests/components/google_assistant/test_trait.py b/tests/components/google_assistant/test_trait.py
index 3f1e28cb667206..58cbc5dce0e159 100644
--- a/tests/components/google_assistant/test_trait.py
+++ b/tests/components/google_assistant/test_trait.py
@@ -1080,7 +1080,9 @@ async def test_temperature_setting_climate_onoff(hass: HomeAssistant) -> None:
             "climate.bla",
             climate.HVACMode.AUTO,
             {
-                ATTR_SUPPORTED_FEATURES: ClimateEntityFeature.TARGET_TEMPERATURE_RANGE,
+                ATTR_SUPPORTED_FEATURES: ClimateEntityFeature.TARGET_TEMPERATURE_RANGE
+                | ClimateEntityFeature.TURN_ON
+                | ClimateEntityFeature.TURN_OFF,
                 climate.ATTR_HVAC_MODES: [
                     climate.HVACMode.OFF,
                     climate.HVACMode.COOL,
@@ -1161,7 +1163,9 @@ async def test_temperature_setting_climate_range(hass: HomeAssistant) -> None:
             {
                 climate.ATTR_CURRENT_TEMPERATURE: 70,
                 climate.ATTR_CURRENT_HUMIDITY: 25,
-                ATTR_SUPPORTED_FEATURES: ClimateEntityFeature.TARGET_TEMPERATURE_RANGE,
+                ATTR_SUPPORTED_FEATURES: ClimateEntityFeature.TARGET_TEMPERATURE_RANGE
+                | ClimateEntityFeature.TURN_ON
+                | ClimateEntityFeature.TURN_OFF,
                 climate.ATTR_HVAC_MODES: [
                     STATE_OFF,
                     climate.HVACMode.COOL,
@@ -1273,7 +1277,9 @@ async def test_temperature_setting_climate_setpoint(hass: HomeAssistant) -> None
             "climate.bla",
             climate.HVACMode.COOL,
             {
-                ATTR_SUPPORTED_FEATURES: ClimateEntityFeature.TARGET_TEMPERATURE,
+                ATTR_SUPPORTED_FEATURES: ClimateEntityFeature.TARGET_TEMPERATURE
+                | ClimateEntityFeature.TURN_ON
+                | ClimateEntityFeature.TURN_OFF,
                 climate.ATTR_HVAC_MODES: [STATE_OFF, climate.HVACMode.COOL],
                 climate.ATTR_MIN_TEMP: 10,
                 climate.ATTR_MAX_TEMP: 30,