diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index bb18872a4e..4353765910 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -98,14 +98,24 @@
  * Thermal Protection parameters for the bed are just as above for hotends.
  */
 #if ENABLED(THERMAL_PROTECTION_BED)
-  #define THERMAL_PROTECTION_BED_PERIOD 20    // Seconds
-  #define THERMAL_PROTECTION_BED_HYSTERESIS 2 // Degrees Celsius
+  #if ENABLED(TREX3) && DISABLED(BedAC)
+    #define THERMAL_PROTECTION_BED_PERIOD 50    // Seconds
+    #define THERMAL_PROTECTION_BED_HYSTERESIS 2 // Degrees Celsius
+  #else
+    #define THERMAL_PROTECTION_BED_PERIOD 20    // Seconds
+    #define THERMAL_PROTECTION_BED_HYSTERESIS 2 // Degrees Celsius
+  #endif
 
   /**
    * As described above, except for the bed (M140/M190/M303).
    */
-  #define WATCH_BED_TEMP_PERIOD 60                // Seconds
-  #define WATCH_BED_TEMP_INCREASE 2               // Degrees Celsius
+  #if ENABLED(TREX3) && DISABLED(BedAC)
+    #define WATCH_BED_TEMP_PERIOD 90                // Seconds
+    #define WATCH_BED_TEMP_INCREASE 2               // Degrees Celsius
+  #else
+    #define WATCH_BED_TEMP_PERIOD 60                // Seconds
+    #define WATCH_BED_TEMP_INCREASE 2               // Degrees Celsius
+  #endif
 #endif
 
 #if ENABLED(PIDTEMP)