diff --git a/README.md b/README.md
index 98ffa6d..70a3191 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,8 @@ An ESPHome component for the Winix C545 air purifier.
 - Full local control of the air purifier via Home Assistant or MQTT.
 - Physical device controls remain functional and changes are immediately reflected in the frontend. 
 - AQI, AQI indicator, filter age, filter lifetime and light intensity sensors.
-- Switches to control Plasmawave, Auto and Sleep modes.
+- Switch to control Plasmawave.
+- Auto and Sleep modes are implemented as fan presets.
 - Piggybacks on the OEM protocol with minimal hardware modifications required.
   - The OEM app can (theoretically) remain functional.
 
@@ -105,8 +106,4 @@ switch:
   - platform: winix_c545
     plasmawave:
       name: Plasmawave
-    auto:
-      name: Auto
-    sleep:
-      name: Sleep
 ```
diff --git a/components/winix_c545/switch.py b/components/winix_c545/switch.py
index a65e597..09a3f5d 100644
--- a/components/winix_c545/switch.py
+++ b/components/winix_c545/switch.py
@@ -9,15 +9,8 @@
 
 WinixC545PlasmawaveSwitch = winix_c545_ns.class_(
     "WinixC545PlasmawaveSwitch", switch.Switch)
-WinixC545AutoSwitch = winix_c545_ns.class_(
-    "WinixC545AutoSwitch", switch.Switch)
-WinixC545SleepSwitch = winix_c545_ns.class_(
-    "WinixC545SleepSwitch", switch.Switch)
 
-# TODO auto and sleep should be presets not switches but fan doesn't support presets currently
 CONF_PLASMAWAVE = "plasmawave"
-CONF_AUTO = "auto"
-CONF_SLEEP = "sleep"
 
 CONFIG_SCHEMA = cv.Schema(
     {
@@ -26,16 +19,6 @@
             WinixC545PlasmawaveSwitch,
             device_class=DEVICE_CLASS_SWITCH,
             icon="mdi:lightning-bolt-outline",
-        ),
-        cv.Optional(CONF_AUTO): switch.switch_schema(
-            WinixC545AutoSwitch,
-            device_class=DEVICE_CLASS_SWITCH,
-            icon="mdi:auto-mode",
-        ),
-        cv.Optional(CONF_SLEEP): switch.switch_schema(
-            WinixC545SleepSwitch,
-            device_class=DEVICE_CLASS_SWITCH,
-            icon="mdi:sleep",
         )
     }
 )
@@ -48,13 +31,3 @@ async def to_code(config) -> None:
         sw = await switch.new_switch(switch_config)
         await cg.register_parented(sw, config[CONF_WINIX_C545_ID])
         cg.add(component.set_plasmawave_switch(sw))
-
-    if switch_config := config.get(CONF_AUTO):
-        sw = await switch.new_switch(switch_config)
-        await cg.register_parented(sw, config[CONF_WINIX_C545_ID])
-        cg.add(component.set_auto_switch(sw))
-
-    if switch_config := config.get(CONF_SLEEP):
-        sw = await switch.new_switch(switch_config)
-        await cg.register_parented(sw, config[CONF_WINIX_C545_ID])
-        cg.add(component.set_sleep_switch(sw))
diff --git a/components/winix_c545/winix_c545.cpp b/components/winix_c545/winix_c545.cpp
index 8294f4e..5c69711 100644
--- a/components/winix_c545/winix_c545.cpp
+++ b/components/winix_c545/winix_c545.cpp
@@ -163,28 +163,6 @@ void WinixC545Component::publish_state_() {
           this->plasmawave_switch_->publish_state(state);
         break;
       }
-
-      case StateKey::Auto: {
-        // Auto
-        if (this->auto_switch_ == nullptr)
-          continue;
-
-        bool state = value == 1;
-        if (state != this->auto_switch_->state)
-          this->auto_switch_->publish_state(state);
-        break;
-      }
-
-      case StateKey::Speed: {
-        // Sleep is a speed value
-        if (this->sleep_switch_ == nullptr)
-          continue;
-
-        bool state = value == 6;
-        if (state != this->sleep_switch_->state)
-          this->sleep_switch_->publish_state(state);
-        break;
-      }
     }
   }
 
@@ -438,8 +416,6 @@ void WinixC545Component::dump_config() {
 
 #ifdef USE_SWITCH
   LOG_SWITCH("  ", "Plasmawave Switch", this->plasmawave_switch_);
-  LOG_SWITCH("  ", "Auto Switch", this->auto_switch_);
-  LOG_SWITCH("  ", "Sleep Switch", this->sleep_switch_);
 #endif
 }
 
@@ -503,6 +479,29 @@ void WinixC545Fan::update_state(const WinixStateMap &states) {
 
         // Speed has changed, publish
         this->speed = speed;
+
+        // Set preset mode to Sleep if speed indicates sleep and Auto is not enabled
+        if (this->preset_mode != PRESET_AUTO)
+          this->preset_mode = (value == 6) ? PRESET_SLEEP : PRESET_NONE;
+
+        publish = true;
+
+        break;
+      }
+
+      case StateKey::Auto: {
+        // Auto
+        std::string preset_mode = this->preset_mode;
+        if (value == 1)
+          preset_mode = PRESET_AUTO;
+        else if (this->preset_mode == PRESET_AUTO)
+          preset_mode = PRESET_NONE;
+
+        if (preset_mode == this->preset_mode)
+          continue;
+
+        // Preset has changed, publish
+        this->preset_mode = preset_mode;
         publish = true;
 
         break;
@@ -529,6 +528,18 @@ void WinixC545Fan::control(const fan::FanCall &call) {
     states.emplace(StateKey::Speed, this->speed == 4 ? 5 : this->speed);
   }
 
+  if (this->preset_mode != call.get_preset_mode()) {
+    this->preset_mode = call.get_preset_mode();
+
+    // Update auto mode
+    if (this->preset_mode == PRESET_AUTO)
+      states.emplace(StateKey::Auto, 1);
+
+    // Set sleep mode
+    if (this->preset_mode == PRESET_SLEEP)
+      states.emplace(StateKey::Speed, 6);
+  }
+
   this->parent_->write_state(states);
   this->publish_state();
 }
diff --git a/components/winix_c545/winix_c545.h b/components/winix_c545/winix_c545.h
index 8dade39..8e968d2 100644
--- a/components/winix_c545/winix_c545.h
+++ b/components/winix_c545/winix_c545.h
@@ -68,9 +68,6 @@ class WinixC545Component : public uart::UARTDevice, public Component {
 
 #ifdef USE_SWITCH
   SUB_SWITCH(plasmawave)
-  // TODO the following belong as presets, not switches
-  SUB_SWITCH(auto)
-  SUB_SWITCH(sleep)
 #endif
 
  public:
@@ -121,16 +118,25 @@ class WinixC545Component : public uart::UARTDevice, public Component {
 
 class WinixC545Fan : public fan::Fan, public Parented<WinixC545Component> {
  public:
-  fan::FanTraits get_traits() override {
+  WinixC545Fan() {
     // Only support speed control with 4 levels: Low, Med, High, Turbo
-    return fan::FanTraits(false, true, false, 4);
+    this->traits_ = fan::FanTraits(false, true, false, 4);
+    // Add presets
+    this->traits_.set_supported_preset_modes({PRESET_AUTO, PRESET_SLEEP});
   }
 
+  fan::FanTraits get_traits() override { return this->traits_; }
+
   void dump_config();
   void update_state(const WinixStateMap &);
 
  protected:
+  const std::string PRESET_NONE{""};
+  const std::string PRESET_SLEEP{"Sleep"};
+  const std::string PRESET_AUTO{"Auto"};
+
   void control(const fan::FanCall &call) override;
+  fan::FanTraits traits_;
 };
 
 class WinixC545Switch : public switch_::Switch, public Parented<WinixC545Component> {
@@ -150,16 +156,5 @@ class WinixC545PlasmawaveSwitch : public WinixC545Switch {
   WinixC545PlasmawaveSwitch() : WinixC545Switch(StateKey::Plasmawave) {}
 };
 
-class WinixC545AutoSwitch : public WinixC545Switch {
- public:
-  WinixC545AutoSwitch() : WinixC545Switch(StateKey::Auto, 1, 2) {}
-};
-
-class WinixC545SleepSwitch : public WinixC545Switch {
- public:
-  // Sleep switch operates on fan speed, switch to low when turned off
-  WinixC545SleepSwitch() : WinixC545Switch(StateKey::Speed, 6, 1) {}
-};
-
 }  // namespace winix_c545
 }  // namespace esphome
\ No newline at end of file
diff --git a/example.yaml b/example.yaml
index fb19c90..6f43e5f 100644
--- a/example.yaml
+++ b/example.yaml
@@ -36,8 +36,4 @@ text_sensor:
 switch:
   - platform: winix_c545
     plasmawave:
-      name: Plasmawave
-    auto:
-      name: Auto
-    sleep:
-      name: Sleep
+      name: Plasmawave
\ No newline at end of file