diff --git a/gallery/src/pages/misc/entity-state.ts b/gallery/src/pages/misc/entity-state.ts
index ab395b71a111..8d38fe9413d6 100644
--- a/gallery/src/pages/misc/entity-state.ts
+++ b/gallery/src/pages/misc/entity-state.ts
@@ -140,6 +140,9 @@ const ENTITIES: HassEntity[] = [
   createEntity("climate.auto_preheating", "auto", undefined, {
     hvac_action: "preheating",
   }),
+  createEntity("climate.auto_defrosting", "auto", undefined, {
+    hvac_action: "defrosting",
+  }),
   createEntity("climate.auto_heating", "auto", undefined, {
     hvac_action: "heating",
   }),
diff --git a/src/common/entity/get_states.ts b/src/common/entity/get_states.ts
index 24e9fa4a7eef..7307a06e2229 100644
--- a/src/common/entity/get_states.ts
+++ b/src/common/entity/get_states.ts
@@ -122,13 +122,14 @@ const FIXED_DOMAIN_ATTRIBUTE_STATES = {
   },
   climate: {
     hvac_action: [
-      "off",
-      "idle",
-      "preheating",
-      "heating",
       "cooling",
+      "defrosting",
       "drying",
       "fan",
+      "heating",
+      "idle",
+      "off",
+      "preheating",
     ],
   },
   cover: {
diff --git a/src/data/climate.ts b/src/data/climate.ts
index 97a2557c71f7..30ee11d2b909 100644
--- a/src/data/climate.ts
+++ b/src/data/climate.ts
@@ -28,13 +28,14 @@ export type HvacMode = (typeof HVAC_MODES)[number];
 export const CLIMATE_PRESET_NONE = "none";
 
 export type HvacAction =
-  | "off"
-  | "preheating"
-  | "heating"
   | "cooling"
+  | "defrosting"
   | "drying"
+  | "fan"
+  | "heating"
   | "idle"
-  | "fan";
+  | "off"
+  | "preheating";
 
 export type ClimateEntity = HassEntityBase & {
   attributes: HassEntityAttributeBase & {
@@ -89,12 +90,13 @@ export const compareClimateHvacModes = (mode1: HvacMode, mode2: HvacMode) =>
 
 export const CLIMATE_HVAC_ACTION_TO_MODE: Record<HvacAction, HvacMode> = {
   cooling: "cool",
+  defrosting: "heat",
   drying: "dry",
   fan: "fan_only",
-  preheating: "heat",
   heating: "heat",
   idle: "off",
   off: "off",
+  preheating: "heat",
 };
 
 export const CLIMATE_HVAC_MODE_ICONS: Record<HvacMode, string> = {
diff --git a/src/fake_data/entity_component_icons.ts b/src/fake_data/entity_component_icons.ts
index 90b580f977e7..242f301516a6 100644
--- a/src/fake_data/entity_component_icons.ts
+++ b/src/fake_data/entity_component_icons.ts
@@ -907,6 +907,7 @@ export const ENTITY_COMPONENT_ICONS: Record<string, ComponentIcons> = {
             idle: "mdi:clock-outline",
             off: "mdi:power",
             preheating: "mdi:heat-wave",
+            defrosting: "mdi:snowflake-melt",
           },
         },
         preset_mode: {