diff --git a/homeassistant/components/mqtt/client.py b/homeassistant/components/mqtt/client.py
index 9021e4fa641d5..09edf3f9b340e 100644
--- a/homeassistant/components/mqtt/client.py
+++ b/homeassistant/components/mqtt/client.py
@@ -921,7 +921,7 @@ def _async_mqtt_on_connect(
 
         self.connected = True
         async_dispatcher_send(self.hass, MQTT_CONNECTED)
-        _LOGGER.info(
+        _LOGGER.debug(
             "Connected to MQTT server %s:%s (%s)",
             self.conf[CONF_BROKER],
             self.conf.get(CONF_PORT, DEFAULT_PORT),
diff --git a/homeassistant/components/mqtt/discovery.py b/homeassistant/components/mqtt/discovery.py
index 702db9e508e1c..4717f297d1654 100644
--- a/homeassistant/components/mqtt/discovery.py
+++ b/homeassistant/components/mqtt/discovery.py
@@ -123,11 +123,11 @@ def set_discovery_hash(hass: HomeAssistant, discovery_hash: tuple[str, str]) ->
 
 @callback
 def async_log_discovery_origin_info(
-    message: str, discovery_payload: MQTTDiscoveryPayload
+    message: str, discovery_payload: MQTTDiscoveryPayload, level: int = logging.INFO
 ) -> None:
     """Log information about the discovery and origin."""
     if CONF_ORIGIN not in discovery_payload:
-        _LOGGER.info(message)
+        _LOGGER.log(level, message)
         return
     origin_info: MqttOriginInfo = discovery_payload[CONF_ORIGIN]
     sw_version_log = ""
@@ -136,7 +136,8 @@ def async_log_discovery_origin_info(
     support_url_log = ""
     if support_url := origin_info.get("support_url"):
         support_url_log = f", support URL: {support_url}"
-    _LOGGER.info(
+    _LOGGER.log(
+        level,
         "%s from external application %s%s%s",
         message,
         origin_info["name"],
@@ -343,7 +344,7 @@ def discovery_done(_: Any) -> None:
         elif already_discovered:
             # Dispatch update
             message = f"Component has already been discovered: {component} {discovery_id}, sending update"
-            async_log_discovery_origin_info(message, payload)
+            async_log_discovery_origin_info(message, payload, logging.DEBUG)
             async_dispatcher_send(
                 hass, MQTT_DISCOVERY_UPDATED.format(*discovery_hash), payload
             )
diff --git a/homeassistant/components/mqtt/mixins.py b/homeassistant/components/mqtt/mixins.py
index 2a3144a6b1677..173cf9ba08d33 100644
--- a/homeassistant/components/mqtt/mixins.py
+++ b/homeassistant/components/mqtt/mixins.py
@@ -817,7 +817,7 @@ def __init__(
             self._remove_device_updated = async_track_device_registry_updated_event(
                 hass, device_id, self._async_device_removed
             )
-        _LOGGER.info(
+        _LOGGER.debug(
             "%s %s has been initialized",
             self.log_name,
             discovery_hash,
@@ -837,7 +837,7 @@ async def async_discovery_update(
     ) -> None:
         """Handle discovery update."""
         discovery_hash = get_discovery_hash(self._discovery_data)
-        _LOGGER.info(
+        _LOGGER.debug(
             "Got update for %s with hash: %s '%s'",
             self.log_name,
             discovery_hash,
@@ -847,8 +847,8 @@ async def async_discovery_update(
             discovery_payload
             and discovery_payload != self._discovery_data[ATTR_DISCOVERY_PAYLOAD]
         ):
-            _LOGGER.info(
-                "%s %s updating",
+            _LOGGER.debug(
+                "Updating %s with hash %s",
                 self.log_name,
                 discovery_hash,
             )
@@ -864,7 +864,7 @@ async def async_discovery_update(
             )
             await self._async_tear_down()
             send_discovery_done(self.hass, self._discovery_data)
-            _LOGGER.info(
+            _LOGGER.debug(
                 "%s %s has been removed",
                 self.log_name,
                 discovery_hash,
@@ -872,7 +872,7 @@ async def async_discovery_update(
         else:
             # Normal update without change
             send_discovery_done(self.hass, self._discovery_data)
-            _LOGGER.info(
+            _LOGGER.debug(
                 "%s %s no changes",
                 self.log_name,
                 discovery_hash,