diff --git a/src/common/component.rs b/src/common/component.rs
index 7a532c597..ba8de2659 100644
--- a/src/common/component.rs
+++ b/src/common/component.rs
@@ -166,7 +166,11 @@ impl Components {
 ///
 /// let components = Components::new_with_refreshed_list();
 /// for component in &components {
-///     println!("{} {}°C", component.label(), component.temperature());
+///     if let Some(temperature) = component.temperature() {
+///         println!("{} {temperature}°C", component.label());
+///     } else {
+///         println!("{} (unknown temperature)", component.label());
+///     }
 /// }
 /// ```
 pub struct Component {
@@ -185,10 +189,12 @@ impl Component {
     ///
     /// let components = Components::new_with_refreshed_list();
     /// for component in &components {
-    ///     println!("{}°C", component.temperature());
+    ///     if let Some(temperature) = component.temperature() {
+    ///         println!("{temperature}°C");
+    ///     }
     /// }
     /// ```
-    pub fn temperature(&self) -> f32 {
+    pub fn temperature(&self) -> Option<f32> {
         self.inner.temperature()
     }
 
@@ -207,10 +213,12 @@ impl Component {
     ///
     /// let components = Components::new_with_refreshed_list();
     /// for component in &components {
-    ///     println!("{}°C", component.max());
+    ///     if let Some(max) = component.max() {
+    ///         println!("{max}°C");
+    ///     }
     /// }
     /// ```
-    pub fn max(&self) -> f32 {
+    pub fn max(&self) -> Option<f32> {
         self.inner.max()
     }
 
@@ -225,7 +233,9 @@ impl Component {
     ///
     /// let components = Components::new_with_refreshed_list();
     /// for component in &components {
-    ///     println!("{:?}°C", component.critical());
+    ///     if let Some(critical) = component.critical() {
+    ///         println!("{critical}°C");
+    ///     }
     /// }
     /// ```
     pub fn critical(&self) -> Option<f32> {
diff --git a/src/debug.rs b/src/debug.rs
index 4f4dfcebc..82fad1372 100644
--- a/src/debug.rs
+++ b/src/debug.rs
@@ -87,23 +87,21 @@ impl std::fmt::Debug for crate::Components {
 #[cfg(feature = "component")]
 impl std::fmt::Debug for crate::Component {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{} ", self.label())?;
+        if let Some(temperature) = self.temperature() {
+            write!(f, "temperature: {temperature}°C (")?;
+        } else {
+            f.write_str("temperature: unknown (")?;
+        }
+        if let Some(max) = self.max() {
+            write!(f, "max: {max}°C / ")?;
+        } else {
+            f.write_str("max: unknown / ")?;
+        }
         if let Some(critical) = self.critical() {
-            write!(
-                f,
-                "{}: {}°C (max: {}°C / critical: {}°C)",
-                self.label(),
-                self.temperature(),
-                self.max(),
-                critical
-            )
+            write!(f, "critical: {critical}°C)")
         } else {
-            write!(
-                f,
-                "{}: {}°C (max: {}°C)",
-                self.label(),
-                self.temperature(),
-                self.max()
-            )
+            f.write_str("critical: unknown)")
         }
     }
 }
diff --git a/src/unix/apple/app_store/component.rs b/src/unix/apple/app_store/component.rs
index e7a999f95..ab49cbd48 100644
--- a/src/unix/apple/app_store/component.rs
+++ b/src/unix/apple/app_store/component.rs
@@ -7,12 +7,12 @@ pub(crate) struct ComponentInner {
 }
 
 impl ComponentInner {
-    pub(crate) fn temperature(&self) -> f32 {
-        0.0
+    pub(crate) fn temperature(&self) -> Option<f32> {
+        None
     }
 
-    pub(crate) fn max(&self) -> f32 {
-        0.0
+    pub(crate) fn max(&self) -> Option<f32> {
+        None
     }
 
     pub(crate) fn critical(&self) -> Option<f32> {
diff --git a/src/unix/apple/macos/component/arm.rs b/src/unix/apple/macos/component/arm.rs
index af5a82c7f..6577fd15d 100644
--- a/src/unix/apple/macos/component/arm.rs
+++ b/src/unix/apple/macos/component/arm.rs
@@ -137,7 +137,7 @@ impl ComponentsInner {
 
 pub(crate) struct ComponentInner {
     service: *mut __IOHIDServiceClient,
-    temperature: f32,
+    temperature: Option<f32>,
     label: String,
     max: f32,
     critical: Option<f32>,
@@ -159,17 +159,17 @@ impl ComponentInner {
             label,
             max: max.unwrap_or(0.),
             critical,
-            temperature: 0.,
+            temperature: None,
             updated: true,
         }
     }
 
-    pub(crate) fn temperature(&self) -> f32 {
+    pub(crate) fn temperature(&self) -> Option<f32> {
         self.temperature
     }
 
-    pub(crate) fn max(&self) -> f32 {
-        self.max
+    pub(crate) fn max(&self) -> Option<f32> {
+        Some(self.max)
     }
 
     pub(crate) fn critical(&self) -> Option<f32> {
@@ -182,22 +182,23 @@ impl ComponentInner {
 
     pub(crate) fn refresh(&mut self) {
         unsafe {
-            let event = match CFReleaser::new(IOHIDServiceClientCopyEvent(
+            let Some(event) = CFReleaser::new(IOHIDServiceClientCopyEvent(
                 self.service as *const _,
                 kIOHIDEventTypeTemperature,
                 0,
                 0,
-            )) {
-                Some(e) => e,
-                None => return,
+            )) else {
+                self.temperature = None;
+                return;
             };
 
-            self.temperature = IOHIDEventGetFloatValue(
+            let temperature = IOHIDEventGetFloatValue(
                 event.inner(),
                 IOHIDEventFieldBase(kIOHIDEventTypeTemperature),
             ) as _;
-            if self.temperature > self.max {
-                self.max = self.temperature;
+            self.temperature = Some(temperature);
+            if temperature > self.max {
+                self.max = temperature;
             }
         }
     }
diff --git a/src/unix/apple/macos/component/x86.rs b/src/unix/apple/macos/component/x86.rs
index 3621cbe09..a921179bf 100644
--- a/src/unix/apple/macos/component/x86.rs
+++ b/src/unix/apple/macos/component/x86.rs
@@ -101,7 +101,7 @@ impl ComponentsInner {
 }
 
 pub(crate) struct ComponentInner {
-    temperature: f32,
+    temperature: Option<f32>,
     max: f32,
     critical: Option<f32>,
     label: String,
@@ -120,7 +120,7 @@ impl ComponentInner {
     ) -> Option<Self> {
         let ffi_part = ComponentFFI::new(key, connection)?;
         ffi_part.temperature().map(|temperature| Self {
-            temperature,
+            temperature: Some(temperature),
             label,
             max: max.unwrap_or(temperature),
             critical,
@@ -129,12 +129,12 @@ impl ComponentInner {
         })
     }
 
-    pub(crate) fn temperature(&self) -> f32 {
+    pub(crate) fn temperature(&self) -> Option<f32> {
         self.temperature
     }
 
-    pub(crate) fn max(&self) -> f32 {
-        self.max
+    pub(crate) fn max(&self) -> Option<f32> {
+        Some(self.max)
     }
 
     pub(crate) fn critical(&self) -> Option<f32> {
@@ -146,10 +146,10 @@ impl ComponentInner {
     }
 
     pub(crate) fn refresh(&mut self) {
-        if let Some(temp) = self.ffi_part.temperature() {
-            self.temperature = temp;
-            if self.temperature > self.max {
-                self.max = self.temperature;
+        self.temperature = self.ffi_part.temperature();
+        if let Some(temperature) = self.temperature {
+            if temperature > self.max {
+                self.max = temperature;
             }
         }
     }
diff --git a/src/unix/freebsd/component.rs b/src/unix/freebsd/component.rs
index c849a7d70..0c1922637 100644
--- a/src/unix/freebsd/component.rs
+++ b/src/unix/freebsd/component.rs
@@ -6,18 +6,18 @@ use crate::Component;
 pub(crate) struct ComponentInner {
     id: Vec<u8>,
     label: String,
-    temperature: f32,
+    temperature: Option<f32>,
     max: f32,
     pub(crate) updated: bool,
 }
 
 impl ComponentInner {
-    pub(crate) fn temperature(&self) -> f32 {
+    pub(crate) fn temperature(&self) -> Option<f32> {
         self.temperature
     }
 
-    pub(crate) fn max(&self) -> f32 {
-        self.max
+    pub(crate) fn max(&self) -> Option<f32> {
+        Some(self.max)
     }
 
     pub(crate) fn critical(&self) -> Option<f32> {
@@ -30,10 +30,10 @@ impl ComponentInner {
 
     pub(crate) fn refresh(&mut self) {
         unsafe {
-            if let Some(temperature) = refresh_component(&self.id) {
-                self.temperature = temperature;
-                if self.temperature > self.max {
-                    self.max = self.temperature;
+            self.temperature = refresh_component(&self.id);
+            if let Some(temperature) = self.temperature {
+                if temperature > self.max {
+                    self.max = temperature;
                 }
             }
         }
@@ -93,7 +93,7 @@ impl ComponentsInner {
                             inner: ComponentInner {
                                 id,
                                 label: format!("CPU {}", core + 1),
-                                temperature,
+                                temperature: Some(temperature),
                                 max: temperature,
                                 updated: true,
                             },
diff --git a/src/unix/linux/component.rs b/src/unix/linux/component.rs
index 3c21d0ab9..e25e9a38b 100644
--- a/src/unix/linux/component.rs
+++ b/src/unix/linux/component.rs
@@ -343,12 +343,12 @@ impl ComponentInner {
         }
     }
 
-    pub(crate) fn temperature(&self) -> f32 {
-        self.temperature.unwrap_or(f32::NAN)
+    pub(crate) fn temperature(&self) -> Option<f32> {
+        self.temperature
     }
 
-    pub(crate) fn max(&self) -> f32 {
-        self.max.unwrap_or(f32::NAN)
+    pub(crate) fn max(&self) -> Option<f32> {
+        self.max
     }
 
     pub(crate) fn critical(&self) -> Option<f32> {
diff --git a/src/unknown/component.rs b/src/unknown/component.rs
index e7a999f95..ab49cbd48 100644
--- a/src/unknown/component.rs
+++ b/src/unknown/component.rs
@@ -7,12 +7,12 @@ pub(crate) struct ComponentInner {
 }
 
 impl ComponentInner {
-    pub(crate) fn temperature(&self) -> f32 {
-        0.0
+    pub(crate) fn temperature(&self) -> Option<f32> {
+        None
     }
 
-    pub(crate) fn max(&self) -> f32 {
-        0.0
+    pub(crate) fn max(&self) -> Option<f32> {
+        None
     }
 
     pub(crate) fn critical(&self) -> Option<f32> {
diff --git a/src/windows/component.rs b/src/windows/component.rs
index 9acd22232..9b92fc0e9 100644
--- a/src/windows/component.rs
+++ b/src/windows/component.rs
@@ -49,12 +49,12 @@ impl ComponentInner {
             })
     }
 
-    pub(crate) fn temperature(&self) -> f32 {
-        self.temperature
+    pub(crate) fn temperature(&self) -> Option<f32> {
+        Some(self.temperature)
     }
 
-    pub(crate) fn max(&self) -> f32 {
-        self.max
+    pub(crate) fn max(&self) -> Option<f32> {
+        Some(self.max)
     }
 
     pub(crate) fn critical(&self) -> Option<f32> {