diff --git a/ks_includes/printer.py b/ks_includes/printer.py
index 41b65cbb..0af3f463 100644
--- a/ks_includes/printer.py
+++ b/ks_includes/printer.py
@@ -28,6 +28,7 @@ class Printer:
         self.cameras = []
         self.available_commands = {}
         self.spoolman = False
+        self.temp_devices = self.sensors = None
 
     def reinit(self, printer_info, data):
         self.config = data['configfile']['config']
@@ -45,6 +46,7 @@ class Printer:
             self.store_timeout = GLib.timeout_add_seconds(1, self._update_temp_store)
         self.tempstore_size = 1200
         self.available_commands = {}
+        self.temp_devices = self.sensors = None
 
         for x in self.config.keys():
             if x[:8] == "extruder":
@@ -201,15 +203,12 @@ class Printer:
         fans = []
         if self.config_section_exists("fan"):
             fans.append("fan")
-        fan_types = ["controller_fan", "fan_generic", "heater_fan"]
-        for fan_type in fan_types:
+        for fan_type in ["controller_fan", "fan_generic", "heater_fan"]:
             fans.extend(iter(self.get_config_section_list(f"{fan_type} ")))
         return fans
 
     def get_output_pins(self):
-        output_pins = []
-        output_pins.extend(iter(self.get_config_section_list("output_pin ")))
-        return output_pins
+        return self.get_config_section_list("output_pin ")
 
     def get_gcode_macros(self):
         macros = []
@@ -235,9 +234,10 @@ class Printer:
         return self.get_config_section_list("temperature_sensor")
 
     def get_filament_sensors(self):
-        sensors = list(self.get_config_section_list("filament_switch_sensor "))
-        sensors.extend(iter(self.get_config_section_list("filament_motion_sensor ")))
-        return sensors
+        if self.sensors is None:
+            self.sensors = list(self.get_config_section_list("filament_switch_sensor "))
+            self.sensors.extend(iter(self.get_config_section_list("filament_motion_sensor ")))
+        return self.sensors
 
     def get_probe(self):
         probe_types = ["probe", "bltouch", "smart_effector", "dockable_probe"]
@@ -372,12 +372,14 @@ class Printer:
         return temp
 
     def get_temp_devices(self):
-        devices = [
-            device
-            for device in self.tools
-            if not device.startswith('extruder_stepper')
-        ]
-        return devices + self.get_heaters() + self.get_temp_sensors() + self.get_temp_fans()
+        if self.temp_devices is None:
+            devices = [
+                device
+                for device in self.tools
+                if not device.startswith('extruder_stepper')
+            ]
+            self.temp_devices = devices + self.get_heaters() + self.get_temp_sensors() + self.get_temp_fans()
+        return self.temp_devices
 
     def get_tools(self):
         return self.tools
diff --git a/panels/base_panel.py b/panels/base_panel.py
index d6974eaa..f9c79ea9 100644
--- a/panels/base_panel.py
+++ b/panels/base_panel.py
@@ -217,20 +217,18 @@ class BasePanel(ScreenPanel):
 
         if action != "notify_status_update" or self._screen.printer is None:
             return
-        devices = (self._printer.get_temp_devices())
-        if devices is not None:
-            for device in devices:
-                temp = self._printer.get_dev_stat(device, "temperature")
-                if temp is not None and device in self.labels:
-                    name = ""
-                    if not (device.startswith("extruder") or device.startswith("heater_bed")):
-                        if self.titlebar_name_type == "full":
-                            name = device.split()[1] if len(device.split()) > 1 else device
-                            name = f'{self.prettify(name)}: '
-                        elif self.titlebar_name_type == "short":
-                            name = device.split()[1] if len(device.split()) > 1 else device
-                            name = f"{name[:1].upper()}: "
-                    self.labels[device].set_label(f"{name}{int(temp)}°")
+        for device in self._printer.get_temp_devices():
+            temp = self._printer.get_dev_stat(device, "temperature")
+            if temp is not None and device in self.labels:
+                name = ""
+                if not (device.startswith("extruder") or device.startswith("heater_bed")):
+                    if self.titlebar_name_type == "full":
+                        name = device.split()[1] if len(device.split()) > 1 else device
+                        name = f'{self.prettify(name)}: '
+                    elif self.titlebar_name_type == "short":
+                        name = device.split()[1] if len(device.split()) > 1 else device
+                        name = f"{name[:1].upper()}: "
+                self.labels[device].set_label(f"{name}{int(temp)}°")
 
         with suppress(Exception):
             if self.current_extruder is not False and data["toolhead"]["extruder"] != self.current_extruder: