diff --git a/homeassistant/components/demo/fan.py b/homeassistant/components/demo/fan.py
index 73cae4a64b1..644c4cb7860 100644
--- a/homeassistant/components/demo/fan.py
+++ b/homeassistant/components/demo/fan.py
@@ -90,6 +90,7 @@ class BaseDemoFan(FanEntity):
     """A demonstration fan component that uses legacy fan speeds."""
 
     _attr_should_poll = False
+    _attr_translation_key = "demo"
 
     def __init__(
         self,
diff --git a/homeassistant/components/demo/icons.json b/homeassistant/components/demo/icons.json
index 79c18bc0a2e..9c746c633d4 100644
--- a/homeassistant/components/demo/icons.json
+++ b/homeassistant/components/demo/icons.json
@@ -23,6 +23,21 @@
         }
       }
     },
+    "fan": {
+      "demo": {
+        "state_attributes": {
+          "preset_mode": {
+            "default": "mdi:circle-medium",
+            "state": {
+              "auto": "mdi:fan-auto",
+              "sleep": "mdi:bed",
+              "smart": "mdi:brain",
+              "on": "mdi:power"
+            }
+          }
+        }
+      }
+    },
     "number": {
       "volume": {
         "default": "mdi:volume-high"
diff --git a/homeassistant/components/demo/strings.json b/homeassistant/components/demo/strings.json
index 555760a5af9..aa5554e9fcc 100644
--- a/homeassistant/components/demo/strings.json
+++ b/homeassistant/components/demo/strings.json
@@ -46,6 +46,20 @@
         }
       }
     },
+    "fan": {
+      "demo": {
+        "state_attributes": {
+          "preset_mode": {
+            "state": {
+              "auto": "[%key:component::climate::entity_component::_::state_attributes::fan_mode::state::auto%]",
+              "sleep": "[%key:component::climate::entity_component::_::state_attributes::preset_mode::state::sleep%]",
+              "smart": "Smart",
+              "on": "[%key:common::state::on%]"
+            }
+          }
+        }
+      }
+    },
     "event": {
       "push": {
         "state_attributes": {
diff --git a/homeassistant/components/fan/icons.json b/homeassistant/components/fan/icons.json
index ebc4988e87f..f962d1e7c1a 100644
--- a/homeassistant/components/fan/icons.json
+++ b/homeassistant/components/fan/icons.json
@@ -11,6 +11,10 @@
           "state": {
             "reverse": "mdi:rotate-left"
           }
+        },
+        "preset_mode": {
+          "default": "mdi:circle-medium",
+          "state": {}
         }
       }
     }