diff --git a/CHANGELOG.md b/CHANGELOG.md
index c8e70aabc..a3cbe5d53 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v0.37.8
+
+- Create a set_select() function, combining the set_dhw_mode(), set_gateway_mode(), set_regulation_mode() and set_schedule_state() functions.
+
 ## v0.37.7
 
 - Don't output schedule-related data when no valid schedule(s) found.
@@ -17,6 +21,8 @@
 
 ## v0.37.4 - not released
 
+- Create a set_number() function, combining the set_number_setpoint() and set_temperature_offset() functions.
+
 ## v0.37.3
 
 - Fix for [plugwise-beta #620](https://github.com/plugwise/plugwise-beta/issues/620).
diff --git a/plugwise/__init__.py b/plugwise/__init__.py
index 9ccbf8335..245aadae1 100644
--- a/plugwise/__init__.py
+++ b/plugwise/__init__.py
@@ -306,6 +306,16 @@ async def async_update(self) -> PlugwiseData:
 ###  API Set and HA Service-related Functions                                                        ###
 ########################################################################################################
 
+    async def set_select(
+        self,
+        key: str,
+        loc_id: str,
+        option: str,
+        name: str | None = None,
+    ) -> None:
+        """Set the selected option for the applicable Select."""
+        await self._smile_api.set_select(key, loc_id, option, name)
+
     async def set_schedule_state(
         self,
         loc_id: str,
@@ -344,15 +354,15 @@ async def set_switch_state(
 
     async def set_gateway_mode(self, mode: str) -> None:
         """Set the gateway mode."""
-        await self._smile_api.set_gateway_mode(mode)
+        await self._smile_api.set_gateway_mode(mode)  # pragma: no cover
 
     async def set_regulation_mode(self, mode: str) -> None:
         """Set the heating regulation mode."""
-        await self._smile_api.set_regulation_mode(mode)
+        await self._smile_api.set_regulation_mode(mode)  # pragma: no cover
 
     async def set_dhw_mode(self, mode: str) -> None:
         """Set the domestic hot water heating regulation mode."""
-        await self._smile_api.set_dhw_mode(mode)
+        await self._smile_api.set_dhw_mode(mode)  # pragma: no cover
 
     async def delete_notification(self) -> None:
         """Delete the active Plugwise Notification."""
diff --git a/plugwise/legacy/smile.py b/plugwise/legacy/smile.py
index 293f0dfb3..6bb8f6854 100644
--- a/plugwise/legacy/smile.py
+++ b/plugwise/legacy/smile.py
@@ -182,6 +182,12 @@ async def set_preset(self, _: str, preset: str) -> None:
     async def set_regulation_mode(self, mode: str) -> None:
         """Set-function placeholder for legacy devices."""
 
+    async def set_select(self, key: str, loc_id: str, option: str, name: str | None) -> None:
+        """Set the thermostat schedule option."""
+        # schedule state corresponds to select option
+        # schedule name corresponds to select name
+        await self.set_schedule_state("dummy", option, name)
+
     async def set_schedule_state(self, _: str, state: str, name: str | None) -> None:
         """Activate/deactivate the Schedule.
 
diff --git a/plugwise/smile.py b/plugwise/smile.py
index e1cbdc359..e26d90ab7 100644
--- a/plugwise/smile.py
+++ b/plugwise/smile.py
@@ -149,39 +149,6 @@ async def delete_notification(self) -> None:
         """Delete the active Plugwise Notification."""
         await self._request(NOTIFICATIONS, method="delete")
 
-    async def set_dhw_mode(self, mode: str) -> None:
-        """Set the domestic hot water heating regulation mode."""
-        if mode not in self._dhw_allowed_modes:
-            raise PlugwiseError("Plugwise: invalid dhw mode.")
-
-        uri = f"{APPLIANCES};type=heater_central/domestic_hot_water_mode_control"
-        data = f"<domestic_hot_water_mode_control_functionality><mode>{mode}</mode></domestic_hot_water_mode_control_functionality>"
-
-        await self._request(uri, method="put", data=data)
-
-    async def set_gateway_mode(self, mode: str) -> None:
-        """Set the gateway mode."""
-        if mode not in self._gw_allowed_modes:
-            raise PlugwiseError("Plugwise: invalid gateway mode.")
-
-        end_time = "2037-04-21T08:00:53.000Z"
-        valid = ""
-        if mode == "away":
-            time_1 = self._domain_objects.find("./gateway/time").text
-            away_time = dt.datetime.fromisoformat(time_1).astimezone(dt.UTC).isoformat(timespec="milliseconds").replace("+00:00", "Z")
-            valid = (
-                f"<valid_from>{away_time}</valid_from><valid_to>{end_time}</valid_to>"
-            )
-        if mode == "vacation":
-            time_2 = str(dt.date.today() - dt.timedelta(1))
-            vacation_time = time_2 + "T23:00:00.000Z"
-            valid = f"<valid_from>{vacation_time}</valid_from><valid_to>{end_time}</valid_to>"
-
-        uri = f"{APPLIANCES};id={self.gateway_id}/gateway_mode_control"
-        data = f"<gateway_mode_control_functionality><mode>{mode}</mode>{valid}</gateway_mode_control_functionality>"
-
-        await self._request(uri, method="put", data=data)
-
     async def set_number(
         self,
         dev_id: str,
@@ -241,6 +208,53 @@ async def set_preset(self, loc_id: str, preset: str) -> None:
 
         await self._request(uri, method="put", data=data)
 
+    async def set_select(self, key: str, loc_id: str, option: str, name: str | None) -> None:
+        """Set a dhw/gateway/regulation mode or the thermostat schedule option."""
+        match key:
+            case "select_dhw_mode":
+                await self.set_dhw_mode(option)
+            case "select_gateway_mode":
+                await self.set_gateway_mode(option)
+            case "select_regulation_mode":
+                await self.set_regulation_mode(option)
+            case "select_schedule":
+                # schedule state corresponds to select option
+                # schedule name corresponds to select name
+                await self.set_schedule_state(loc_id, option, name)
+
+    async def set_dhw_mode(self, mode: str) -> None:
+        """Set the domestic hot water heating regulation mode."""
+        if mode not in self._dhw_allowed_modes:
+            raise PlugwiseError("Plugwise: invalid dhw mode.")
+
+        uri = f"{APPLIANCES};type=heater_central/domestic_hot_water_mode_control"
+        data = f"<domestic_hot_water_mode_control_functionality><mode>{mode}</mode></domestic_hot_water_mode_control_functionality>"
+
+        await self._request(uri, method="put", data=data)
+
+    async def set_gateway_mode(self, mode: str) -> None:
+        """Set the gateway mode."""
+        if mode not in self._gw_allowed_modes:
+            raise PlugwiseError("Plugwise: invalid gateway mode.")
+
+        end_time = "2037-04-21T08:00:53.000Z"
+        valid = ""
+        if mode == "away":
+            time_1 = self._domain_objects.find("./gateway/time").text
+            away_time = dt.datetime.fromisoformat(time_1).astimezone(dt.UTC).isoformat(timespec="milliseconds").replace("+00:00", "Z")
+            valid = (
+                f"<valid_from>{away_time}</valid_from><valid_to>{end_time}</valid_to>"
+            )
+        if mode == "vacation":
+            time_2 = str(dt.date.today() - dt.timedelta(1))
+            vacation_time = time_2 + "T23:00:00.000Z"
+            valid = f"<valid_from>{vacation_time}</valid_from><valid_to>{end_time}</valid_to>"
+
+        uri = f"{APPLIANCES};id={self.gateway_id}/gateway_mode_control"
+        data = f"<gateway_mode_control_functionality><mode>{mode}</mode>{valid}</gateway_mode_control_functionality>"
+
+        await self._request(uri, method="put", data=data)
+
     async def set_regulation_mode(self, mode: str) -> None:
         """Set the heating regulation mode."""
         if mode not in self._reg_allowed_modes:
@@ -258,7 +272,7 @@ async def set_schedule_state(
         self,
         loc_id: str,
         new_state: str,
-        name: str | None = None,
+        name: str | None,
     ) -> None:
         """Activate/deactivate the Schedule, with the given name, on the relevant Thermostat.
 
diff --git a/pyproject.toml b/pyproject.toml
index ada21a99a..295d235b9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name            = "plugwise"
-version         = "0.37.7"
+version         = "0.37.8"
 license         = {file = "LICENSE"}
 description     = "Plugwise Smile (Adam/Anna/P1) and Stretch module for Python 3."
 readme          = "README.md"
diff --git a/tests/test_init.py b/tests/test_init.py
index fbc6cc727..45fc05469 100644
--- a/tests/test_init.py
+++ b/tests/test_init.py
@@ -733,7 +733,7 @@ async def tinker_thermostat_schedule(
                     new_schedule = new_schedule[1:]
                 _LOGGER.info("- Adjusting schedule to %s", f"{new_schedule}{warning}")
                 try:
-                    await smile.set_schedule_state(loc_id, state, new_schedule)
+                    await smile.set_select("select_schedule", loc_id, state, new_schedule)
                     tinker_schedule_passed = True
                     _LOGGER.info("  + working as intended")
                 except pw_exceptions.PlugwiseError:
@@ -763,7 +763,7 @@ async def tinker_legacy_thermostat_schedule(self, smile, unhappy=False):
         for state in states:
             _LOGGER.info("- Adjusting schedule to state %s", state)
             try:
-                await smile.set_schedule_state(None, state)
+                await smile.set_select("select_schedule", "dummy", state)
                 tinker_schedule_passed = True
                 _LOGGER.info("  + working as intended")
             except pw_exceptions.PlugwiseError:
@@ -847,7 +847,7 @@ async def tinker_dhw_mode(smile):
                 mode = mode[1:]
             _LOGGER.info("%s", f"- Adjusting dhw mode to {mode}{warning}")
             try:
-                await smile.set_dhw_mode(mode)
+                await smile.set_select("select_dhw_mode", "dummy", mode)
                 _LOGGER.info("  + tinker_dhw_mode worked as intended")
             except pw_exceptions.PlugwiseError:
                 _LOGGER.info("  + tinker_dhw_mode found invalid mode, as expected")
@@ -862,7 +862,7 @@ async def tinker_regulation_mode(smile):
                 mode = mode[1:]
             _LOGGER.info("%s", f"- Adjusting regulation mode to {mode}{warning}")
             try:
-                await smile.set_regulation_mode(mode)
+                await smile.set_select("select_regulation_mode", "dummy", mode)
                 _LOGGER.info("  + tinker_regulation_mode worked as intended")
             except pw_exceptions.PlugwiseError:
                 _LOGGER.info(
@@ -904,7 +904,7 @@ async def tinker_gateway_mode(smile):
                 mode = mode[1:]
             _LOGGER.info("%s", f"- Adjusting gateway mode to {mode}{warning}")
             try:
-                await smile.set_gateway_mode(mode)
+                await smile.set_select("select_gateway_mode", "dummy", mode)
                 _LOGGER.info("  + worked as intended")
             except pw_exceptions.PlugwiseError:
                 _LOGGER.info("  + found invalid mode, as expected")