diff --git a/google_home/google_home/src/traits.rs b/google_home/google_home/src/traits.rs
index 03d1c07..fbefba3 100644
--- a/google_home/google_home/src/traits.rs
+++ b/google_home/google_home/src/traits.rs
@@ -1,3 +1,4 @@
+#![allow(non_snake_case)]
 use automation_cast::Cast;
 use google_home_macro::traits;
 use serde::Serialize;
@@ -33,6 +34,13 @@ traits! {
         query_only_humidity_setting: Option<bool>,
 
         fn humidity_ambient_percent(&self) -> Result<isize, ErrorCode>,
+    },
+    "action.devices.traits.TemperatureControl" => trait TemperatureSetting {
+        query_only_temperature_control: Option<bool>,
+        // TODO: Add rename
+        temperatureUnitForUX: TemperatureUnit,
+
+        fn temperature_ambient_celsius(&self) -> f32,
     }
 }
 
@@ -53,3 +61,11 @@ pub struct AvailableSpeeds {
     pub speeds: Vec<Speed>,
     pub ordered: bool,
 }
+
+#[derive(Debug, Serialize)]
+pub enum TemperatureUnit {
+    #[serde(rename = "C")]
+    Celsius,
+    #[serde(rename = "F")]
+    Fahrenheit,
+}
diff --git a/google_home/google_home_macro/src/lib.rs b/google_home/google_home_macro/src/lib.rs
index 14e8e41..67c11c6 100644
--- a/google_home/google_home_macro/src/lib.rs
+++ b/google_home/google_home_macro/src/lib.rs
@@ -248,7 +248,7 @@ fn get_state_struct(t: &Trait) -> proc_macro2::TokenStream {
 
     let name = get_state_struct_ident(t);
     quote! {
-        #[derive(Debug, Default, serde::Serialize)]
+        #[derive(Debug, serde::Serialize)]
         #[serde(rename_all = "camelCase")]
         struct #name {
             #(#fields,)*
diff --git a/src/devices/air_filter.rs b/src/devices/air_filter.rs
index 93f05db..6ebf02c 100644
--- a/src/devices/air_filter.rs
+++ b/src/devices/air_filter.rs
@@ -2,7 +2,10 @@ use async_trait::async_trait;
 use automation_macro::{LuaDevice, LuaDeviceConfig};
 use google_home::device::Name;
 use google_home::errors::ErrorCode;
-use google_home::traits::{AvailableSpeeds, FanSpeed, HumiditySetting, OnOff, Speed, SpeedValue};
+use google_home::traits::{
+    AvailableSpeeds, FanSpeed, HumiditySetting, OnOff, Speed, SpeedValue, TemperatureSetting,
+    TemperatureUnit,
+};
 use google_home::types::Type;
 use rumqttc::Publish;
 use tracing::{debug, error, trace, warn};
@@ -69,6 +72,7 @@ impl LuaDeviceCreate for AirFilter {
             last_known_state: AirFilterState {
                 state: AirFilterFanState::Off,
                 humidity: 0.0,
+                temperature: 0.0,
             },
         })
     }
@@ -229,3 +233,19 @@ impl HumiditySetting for AirFilter {
         Ok(self.last_known_state.humidity.round() as isize)
     }
 }
+
+impl TemperatureSetting for AirFilter {
+    fn query_only_temperature_control(&self) -> Option<bool> {
+        Some(true)
+    }
+
+    #[allow(non_snake_case)]
+    fn temperatureUnitForUX(&self) -> TemperatureUnit {
+        TemperatureUnit::Celsius
+    }
+
+    fn temperature_ambient_celsius(&self) -> f32 {
+        // HACK: Round to one decimal place
+        (10.0 * self.last_known_state.temperature).round() / 10.0
+    }
+}
diff --git a/src/messages.rs b/src/messages.rs
index 822036e..b39330e 100644
--- a/src/messages.rs
+++ b/src/messages.rs
@@ -261,6 +261,7 @@ pub struct SetAirFilterFanState {
 pub struct AirFilterState {
     pub state: AirFilterFanState,
     pub humidity: f32,
+    pub temperature: f32,
 }
 
 impl SetAirFilterFanState {