diff --git a/homeassistant/components/fritzbox/climate.py b/homeassistant/components/fritzbox/climate.py
index 7b0bec6fc09..924d92d6c5b 100644
--- a/homeassistant/components/fritzbox/climate.py
+++ b/homeassistant/components/fritzbox/climate.py
@@ -33,6 +33,7 @@ from .const import (
 from .coordinator import FritzboxConfigEntry, FritzboxDataUpdateCoordinator
 from .entity import FritzBoxDeviceEntity
 from .model import ClimateExtraAttributes
+from .sensor import value_scheduled_preset
 
 HVAC_MODES = [HVACMode.HEAT, HVACMode.OFF]
 PRESET_HOLIDAY = "holiday"
@@ -177,7 +178,11 @@ class FritzboxThermostat(FritzBoxDeviceEntity, ClimateEntity):
         if hvac_mode == HVACMode.OFF:
             await self.async_set_temperature(temperature=OFF_REPORT_SET_TEMPERATURE)
         else:
-            await self.async_set_temperature(temperature=self.data.comfort_temperature)
+            if value_scheduled_preset(self.data) == PRESET_ECO:
+                target_temp = self.data.eco_temperature
+            else:
+                target_temp = self.data.comfort_temperature
+            await self.async_set_temperature(temperature=target_temp)
 
     @property
     def preset_mode(self) -> str | None:
diff --git a/tests/components/fritzbox/test_climate.py b/tests/components/fritzbox/test_climate.py
index 61fe6b48a7a..29f5742216f 100644
--- a/tests/components/fritzbox/test_climate.py
+++ b/tests/components/fritzbox/test_climate.py
@@ -313,12 +313,24 @@ async def test_set_temperature(
 
 
 @pytest.mark.parametrize(
-    ("service_data", "target_temperature", "expected_call_args"),
+    ("service_data", "target_temperature", "current_preset", "expected_call_args"),
     [
-        ({ATTR_HVAC_MODE: HVACMode.OFF}, 22, [call(0)]),
-        ({ATTR_HVAC_MODE: HVACMode.HEAT}, 0.0, [call(22)]),
-        ({ATTR_HVAC_MODE: HVACMode.HEAT}, 18, []),
-        ({ATTR_HVAC_MODE: HVACMode.HEAT}, 22, []),
+        # mode off always sets target temperature to 0
+        ({ATTR_HVAC_MODE: HVACMode.OFF}, 22, PRESET_COMFORT, [call(0)]),
+        ({ATTR_HVAC_MODE: HVACMode.OFF}, 16, PRESET_ECO, [call(0)]),
+        ({ATTR_HVAC_MODE: HVACMode.OFF}, 16, None, [call(0)]),
+        # mode heat sets target temperature based on current scheduled preset,
+        # when not already in mode heat
+        ({ATTR_HVAC_MODE: HVACMode.HEAT}, 0.0, PRESET_COMFORT, [call(22)]),
+        ({ATTR_HVAC_MODE: HVACMode.HEAT}, 0.0, PRESET_ECO, [call(16)]),
+        ({ATTR_HVAC_MODE: HVACMode.HEAT}, 0.0, None, [call(22)]),
+        # mode heat does not set target temperature, when already in mode heat
+        ({ATTR_HVAC_MODE: HVACMode.HEAT}, 16, PRESET_COMFORT, []),
+        ({ATTR_HVAC_MODE: HVACMode.HEAT}, 16, PRESET_ECO, []),
+        ({ATTR_HVAC_MODE: HVACMode.HEAT}, 16, None, []),
+        ({ATTR_HVAC_MODE: HVACMode.HEAT}, 22, PRESET_COMFORT, []),
+        ({ATTR_HVAC_MODE: HVACMode.HEAT}, 22, PRESET_ECO, []),
+        ({ATTR_HVAC_MODE: HVACMode.HEAT}, 22, None, []),
     ],
 )
 async def test_set_hvac_mode(
@@ -326,11 +338,20 @@ async def test_set_hvac_mode(
     fritz: Mock,
     service_data: dict,
     target_temperature: float,
+    current_preset: str,
     expected_call_args: list[_Call],
 ) -> None:
     """Test setting hvac mode."""
     device = FritzDeviceClimateMock()
     device.target_temperature = target_temperature
+
+    if current_preset is PRESET_COMFORT:
+        device.nextchange_temperature = device.eco_temperature
+    elif current_preset is PRESET_ECO:
+        device.nextchange_temperature = device.comfort_temperature
+    else:
+        device.nextchange_endperiod = 0
+
     assert await setup_config_entry(
         hass, MOCK_CONFIG[FB_DOMAIN][CONF_DEVICES][0], ENTITY_ID, device, fritz
     )