diff --git a/Marlin/src/gcode/bedlevel/G26.cpp b/Marlin/src/gcode/bedlevel/G26.cpp
index 5c7f9e1f6d..7fae11783e 100644
--- a/Marlin/src/gcode/bedlevel/G26.cpp
+++ b/Marlin/src/gcode/bedlevel/G26.cpp
@@ -615,7 +615,7 @@ void GcodeSuite::G26() {
 
   // If any preset or temperature was specified
   if (noztemp) {
-    if (!WITHIN(noztemp, 165, (HEATER_0_MAXTEMP) - (HOTEND_OVERSHOOT))) {
+    if (!WITHIN(noztemp, 165, thermalManager.hotend_max_target(active_extruder))) {
       SERIAL_ECHOLNPGM("?Specified nozzle temperature not plausible.");
       return;
     }
diff --git a/Marlin/src/inc/Conditionals_post.h b/Marlin/src/inc/Conditionals_post.h
index eabb011300..076b1301d5 100644
--- a/Marlin/src/inc/Conditionals_post.h
+++ b/Marlin/src/inc/Conditionals_post.h
@@ -2458,7 +2458,7 @@
   #ifndef BED_OVERSHOOT
     #define BED_OVERSHOOT 10
   #endif
-  #define BED_MAX_TARGET (BED_MAXTEMP - (BED_OVERSHOOT))
+  #define BED_MAX_TARGET ((BED_MAXTEMP) - (BED_OVERSHOOT))
 #else
   #undef PIDTEMPBED
   #undef PREHEAT_BEFORE_LEVELING
@@ -2469,8 +2469,8 @@
   #ifndef COOLER_OVERSHOOT
     #define COOLER_OVERSHOOT 2
   #endif
-  #define COOLER_MIN_TARGET (COOLER_MINTEMP + (COOLER_OVERSHOOT))
-  #define COOLER_MAX_TARGET (COOLER_MAXTEMP - (COOLER_OVERSHOOT))
+  #define COOLER_MIN_TARGET ((COOLER_MINTEMP) + (COOLER_OVERSHOOT))
+  #define COOLER_MAX_TARGET ((COOLER_MAXTEMP) - (COOLER_OVERSHOOT))
 #endif
 
 #if HAS_TEMP_HOTEND || HAS_HEATED_BED || HAS_TEMP_CHAMBER || HAS_TEMP_PROBE || HAS_TEMP_COOLER || HAS_TEMP_BOARD || HAS_TEMP_SOC
@@ -2482,7 +2482,7 @@
   #ifndef CHAMBER_OVERSHOOT
     #define CHAMBER_OVERSHOOT 10
   #endif
-  #define CHAMBER_MAX_TARGET (CHAMBER_MAXTEMP - (CHAMBER_OVERSHOOT))
+  #define CHAMBER_MAX_TARGET ((CHAMBER_MAXTEMP) - (CHAMBER_OVERSHOOT))
 #else
   #undef PIDTEMPCHAMBER
 #endif
diff --git a/Marlin/src/lcd/e3v2/jyersui/dwin.cpp b/Marlin/src/lcd/e3v2/jyersui/dwin.cpp
index 296f46f68a..8d0482f410 100644
--- a/Marlin/src/lcd/e3v2/jyersui/dwin.cpp
+++ b/Marlin/src/lcd/e3v2/jyersui/dwin.cpp
@@ -114,7 +114,7 @@
   #define MAX_FLOW_RATE   299
   #define MIN_FLOW_RATE   10
 
-  #define MAX_E_TEMP    (HEATER_0_MAXTEMP - HOTEND_OVERSHOOT)
+  #define MAX_E_TEMP    thermalManager.hotend_max_target(0)
   #define MIN_E_TEMP    0
 #endif
 
diff --git a/Marlin/src/lcd/e3v2/proui/dwin.cpp b/Marlin/src/lcd/e3v2/proui/dwin.cpp
index 7520b46b60..b42a9a263b 100644
--- a/Marlin/src/lcd/e3v2/proui/dwin.cpp
+++ b/Marlin/src/lcd/e3v2/proui/dwin.cpp
@@ -154,8 +154,8 @@
 #endif
 
 // Editable temperature limits
-#define MIN_ETEMP  0
-#define MAX_ETEMP  (thermalManager.hotend_maxtemp[0] - (HOTEND_OVERSHOOT))
+#define MIN_ETEMP   0
+#define MAX_ETEMP   thermalManager.hotend_max_target(0)
 #define MIN_BEDTEMP 0
 #define MAX_BEDTEMP BED_MAX_TARGET
 
diff --git a/Marlin/src/lcd/extui/anycubic_i3mega/anycubic_i3mega_lcd.cpp b/Marlin/src/lcd/extui/anycubic_i3mega/anycubic_i3mega_lcd.cpp
index 8b073652b0..f8cba15676 100644
--- a/Marlin/src/lcd/extui/anycubic_i3mega/anycubic_i3mega_lcd.cpp
+++ b/Marlin/src/lcd/extui/anycubic_i3mega/anycubic_i3mega_lcd.cpp
@@ -697,8 +697,7 @@ void AnycubicTFT::getCommandFromTFT() {
         case 18: { // A18 set fan speed
           float fanPercent;
           if (codeSeen('S')) {
-            fanPercent = codeValue();
-            fanPercent = constrain(fanPercent, 0, 100);
+            fanPercent = constrain(codeValue(), 0, 100);
             setTargetFan_percent(fanPercent, FAN0);
           }
           else
diff --git a/Marlin/src/lcd/extui/anycubic_vyper/dgus_tft.cpp b/Marlin/src/lcd/extui/anycubic_vyper/dgus_tft.cpp
index 3209aa76f2..ed4f8c7367 100644
--- a/Marlin/src/lcd/extui/anycubic_vyper/dgus_tft.cpp
+++ b/Marlin/src/lcd/extui/anycubic_vyper/dgus_tft.cpp
@@ -1011,7 +1011,7 @@ namespace Anycubic {
         #if HAS_HOTEND
           else if (control_index == TXT_HOTEND_TARGET || control_index == TXT_ADJUST_HOTEND) { // hotend target temp
             control_value = (uint16_t(data_buf[4]) << 8) | uint16_t(data_buf[5]);
-            temp = constrain(uint16_t(control_value), 0, HEATER_0_MAXTEMP);
+            temp = constrain(uint16_t(control_value), 0, thermalManager.hotend_max_target(0));
             setTargetTemp_celsius(temp, E0);
             //sprintf(str_buf,"%u/%u", (uint16_t)thermalManager.degHotend(0), uint16_t(control_value));
             //sendTxtToTFT(str_buf, TXT_PRINT_HOTEND);
@@ -1021,7 +1021,7 @@ namespace Anycubic {
         #if HAS_HEATED_BED
           else if (control_index == TXT_BED_TARGET || control_index == TXT_ADJUST_BED) {// bed target temp
             control_value = (uint16_t(data_buf[4]) << 8) | uint16_t(data_buf[5]);
-            temp = constrain(uint16_t(control_value), 0, BED_MAXTEMP);
+            temp = constrain(uint16_t(control_value), 0, BED_MAX_TARGET);
             setTargetTemp_celsius(temp, BED);
             //sprintf(str_buf,"%u/%u", uint16_t(thermalManager.degBed()), uint16_t(control_value));
             //sendTxtToTFT(str_buf, TXT_PRINT_BED);
diff --git a/Marlin/src/lcd/extui/dgus/DGUSScreenHandler.cpp b/Marlin/src/lcd/extui/dgus/DGUSScreenHandler.cpp
index d440ea5375..dc2156a0e2 100644
--- a/Marlin/src/lcd/extui/dgus/DGUSScreenHandler.cpp
+++ b/Marlin/src/lcd/extui/dgus/DGUSScreenHandler.cpp
@@ -379,21 +379,21 @@ void DGUSScreenHandler::handleTemperatureChanged(DGUS_VP_Variable &var, void *va
     default: return;
     #if HAS_HOTEND
       case VP_T_E0_Set:
-        NOMORE(newvalue, HEATER_0_MAXTEMP);
+        NOMORE(newvalue, thermalManager.hotend_max_target(0));
         thermalManager.setTargetHotend(newvalue, 0);
         acceptedvalue = thermalManager.degTargetHotend(0);
         break;
     #endif
     #if HAS_MULTI_HOTEND
       case VP_T_E1_Set:
-        NOMORE(newvalue, HEATER_1_MAXTEMP);
+        NOMORE(newvalue, thermalManager.hotend_max_target(1));
         thermalManager.setTargetHotend(newvalue, 1);
         acceptedvalue = thermalManager.degTargetHotend(1);
         break;
     #endif
     #if HAS_HEATED_BED
       case VP_T_Bed_Set:
-        NOMORE(newvalue, BED_MAXTEMP);
+        NOMORE(newvalue, BED_MAX_TARGET);
         thermalManager.setTargetBed(newvalue);
         acceptedvalue = thermalManager.degTargetBed();
         break;
diff --git a/Marlin/src/lcd/extui/dgus_reloaded/DGUSRxHandler.cpp b/Marlin/src/lcd/extui/dgus_reloaded/DGUSRxHandler.cpp
index aa58e85692..c953b417a5 100644
--- a/Marlin/src/lcd/extui/dgus_reloaded/DGUSRxHandler.cpp
+++ b/Marlin/src/lcd/extui/dgus_reloaded/DGUSRxHandler.cpp
@@ -809,15 +809,19 @@ void DGUSRxHandler::pidSetTemp(DGUS_VP &vp, void *data_ptr) {
 
   switch (screen.pid_heater) {
     default: return;
-    case DGUS_Data::Heater::BED:
-      temp = constrain(temp, BED_MINTEMP, BED_MAX_TARGET);
-      break;
-    case DGUS_Data::Heater::H0:
-      temp = constrain(temp, HEATER_0_MINTEMP, (HEATER_0_MAXTEMP - HOTEND_OVERSHOOT));
-      break;
+    #if HAS_HEATED_BED
+      case DGUS_Data::Heater::BED:
+        LIMIT(temp, BED_MINTEMP, BED_MAX_TARGET);
+        break;
+    #endif
+    #if HAS_HOTEND
+      case DGUS_Data::Heater::H0:
+        LIMIT(temp, celsius_t(HEATER_0_MINTEMP), thermalManager.hotend_max_target(0));
+        break;
+    #endif
     #if HAS_MULTI_HOTEND
       case DGUS_Data::Heater::H1:
-        temp = constrain(temp, HEATER_1_MINTEMP, (HEATER_1_MAXTEMP - HOTEND_OVERSHOOT));
+        LIMIT(temp, celsius_t(HEATER_1_MINTEMP), thermalManager.hotend_max_target(0));
         break;
     #endif
   }
diff --git a/Marlin/src/lcd/extui/dgus_reloaded/DGUSScreenHandler.cpp b/Marlin/src/lcd/extui/dgus_reloaded/DGUSScreenHandler.cpp
index 76aa3de872..703c56d1e1 100644
--- a/Marlin/src/lcd/extui/dgus_reloaded/DGUSScreenHandler.cpp
+++ b/Marlin/src/lcd/extui/dgus_reloaded/DGUSScreenHandler.cpp
@@ -51,7 +51,7 @@ uint16_t DGUSScreenHandler::filament_length = DGUS_DEFAULT_FILAMENT_LEN;
 char DGUSScreenHandler::gcode[] = "";
 
 DGUS_Data::Heater DGUSScreenHandler::pid_heater = DGUS_Data::Heater::H0;
-uint16_t DGUSScreenHandler::pid_temp = DGUS_PLA_TEMP_HOTEND;
+celsius_t DGUSScreenHandler::pid_temp = DGUS_PLA_TEMP_HOTEND;
 uint8_t DGUSScreenHandler::pid_cycles = 5;
 
 bool DGUSScreenHandler::settings_ready = false;
diff --git a/Marlin/src/lcd/extui/dgus_reloaded/DGUSScreenHandler.h b/Marlin/src/lcd/extui/dgus_reloaded/DGUSScreenHandler.h
index 27f7f92517..e5942ad44d 100644
--- a/Marlin/src/lcd/extui/dgus_reloaded/DGUSScreenHandler.h
+++ b/Marlin/src/lcd/extui/dgus_reloaded/DGUSScreenHandler.h
@@ -106,7 +106,7 @@ public:
   static char gcode[DGUS_GCODE_LEN + 1];
 
   static DGUS_Data::Heater pid_heater;
-  static uint16_t pid_temp;
+  static celsius_t pid_temp;
   static uint8_t pid_cycles;
 
   static bool wait_continue;
diff --git a/Marlin/src/lcd/extui/dgus_reloaded/DGUSTxHandler.cpp b/Marlin/src/lcd/extui/dgus_reloaded/DGUSTxHandler.cpp
index 037eafcc94..1212f715c0 100644
--- a/Marlin/src/lcd/extui/dgus_reloaded/DGUSTxHandler.cpp
+++ b/Marlin/src/lcd/extui/dgus_reloaded/DGUSTxHandler.cpp
@@ -31,7 +31,9 @@
 
 #include "../ui_api.h"
 #include "../../../module/stepper.h"
+#include "../../../module/temperature.h"
 #include "../../../module/printcounter.h"
+
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
   #include "../../../feature/pause.h"
 #endif
@@ -266,15 +268,19 @@ void DGUSTxHandler::tempMax(DGUS_VP &vp) {
 
   switch (vp.addr) {
     default: return;
-    case DGUS_Addr::TEMP_Max_Bed:
-      temp = BED_MAX_TARGET;
-      break;
-    case DGUS_Addr::TEMP_Max_H0:
-      temp = HEATER_0_MAXTEMP - HOTEND_OVERSHOOT;
-      break;
+    #if HAS_HEATED_BED
+      case DGUS_Addr::TEMP_Max_Bed:
+        temp = BED_MAX_TARGET;
+        break;
+    #endif
+    #if HAS_HOTEND
+      case DGUS_Addr::TEMP_Max_H0:
+        temp = thermalManager.hotend_max_target(0);
+        break;
+    #endif
     #if HAS_MULTI_HOTEND
       case DGUS_Addr::TEMP_Max_H1:
-        temp = HEATER_1_MAXTEMP - HOTEND_OVERSHOOT;
+        temp = thermalManager.hotend_max_target(1);
         break;
     #endif
   }
diff --git a/Marlin/src/lcd/menu/menu_configuration.cpp b/Marlin/src/lcd/menu/menu_configuration.cpp
index 7347f219e0..3280b23e5b 100644
--- a/Marlin/src/lcd/menu/menu_configuration.cpp
+++ b/Marlin/src/lcd/menu/menu_configuration.cpp
@@ -262,9 +262,9 @@ void menu_advanced_settings();
 
     if (c.timeout) GCODES_ITEM(MSG_HOTEND_IDLE_DISABLE, F("M87"));
     EDIT_ITEM(int3, MSG_TIMEOUT, &c.timeout, 0, 999);
-    EDIT_ITEM(int3, MSG_TEMPERATURE, &c.trigger, 0, HEATER_0_MAXTEMP);
-    EDIT_ITEM(int3, MSG_HOTEND_IDLE_NOZZLE_TARGET, &c.nozzle_target, 0, HEATER_0_MAXTEMP);
-    EDIT_ITEM(int3, MSG_HOTEND_IDLE_BED_TARGET, &c.bed_target, 0, BED_MAXTEMP);
+    EDIT_ITEM(int3, MSG_TEMPERATURE, &c.trigger, 0, thermalManager.hotend_max_target(0));
+    EDIT_ITEM(int3, MSG_HOTEND_IDLE_NOZZLE_TARGET, &c.nozzle_target, 0, thermalManager.hotend_max_target(0));
+    EDIT_ITEM(int3, MSG_HOTEND_IDLE_BED_TARGET, &c.bed_target, 0, BED_MAX_TARGET);
 
     END_MENU();
   }
@@ -397,10 +397,10 @@ void menu_advanced_settings();
 #if HAS_PREHEAT && DISABLED(SLIM_LCD_MENUS)
 
   void _menu_configuration_preheat_settings() {
-    #define _MINTEMP_ITEM(N) HEATER_##N##_MINTEMP,
-    #define _MAXTEMP_ITEM(N) HEATER_##N##_MAXTEMP,
-    #define MINTEMP_ALL _MIN(REPEAT(HOTENDS, _MINTEMP_ITEM) 999)
-    #define MAXTEMP_ALL _MAX(REPEAT(HOTENDS, _MAXTEMP_ITEM) 0)
+    #define _MIN_ITEM(N) HEATER_##N##_MINTEMP,
+    #define _MAX_ITEM(N) thermalManager.hotend_max_target(0),
+    #define MINTARGET_ALL _MIN(REPEAT(HOTENDS, _MIN_ITEM) 999)
+    #define MAXTARGET_ALL _MAX(REPEAT(HOTENDS, _MAX_ITEM) 0)
     const uint8_t m = MenuItemBase::itemIndex;
     START_MENU();
     STATIC_ITEM_F(ui.get_preheat_label(m), SS_DEFAULT|SS_INVERT);
@@ -410,7 +410,7 @@ void menu_advanced_settings();
       EDIT_ITEM_N(percent, m, MSG_FAN_SPEED, &editable.uint8, 0, 255, []{ ui.material_preset[MenuItemBase::itemIndex].fan_speed = editable.uint8; });
     #endif
     #if HAS_TEMP_HOTEND
-      EDIT_ITEM(int3, MSG_NOZZLE, &ui.material_preset[m].hotend_temp, MINTEMP_ALL, MAXTEMP_ALL - (HOTEND_OVERSHOOT));
+      EDIT_ITEM(int3, MSG_NOZZLE, &ui.material_preset[m].hotend_temp, MINTARGET_ALL, MAXTARGET_ALL);
     #endif
     #if HAS_HEATED_BED
       EDIT_ITEM(int3, MSG_BED, &ui.material_preset[m].bed_temp, BED_MINTEMP, BED_MAX_TARGET);
diff --git a/Marlin/src/module/temperature.cpp b/Marlin/src/module/temperature.cpp
index c4920c2100..ad1daae762 100644
--- a/Marlin/src/module/temperature.cpp
+++ b/Marlin/src/module/temperature.cpp
@@ -301,13 +301,13 @@ PGMSTR(str_t_heating_failed, STR_T_HEATING_FAILED);
 
   // Sanity-check max readable temperatures
   #define CHECK_MAXTEMP_(N,M,S) static_assert( \
-    S >= 998 || M <= _MAX(TT_NAME(S)[0].celsius, TT_NAME(S)[COUNT(TT_NAME(S)) - 1].celsius) - HOTEND_OVERSHOOT, \
+    S >= 998 || M <= _MAX(TT_NAME(S)[0].celsius, TT_NAME(S)[COUNT(TT_NAME(S)) - 1].celsius) - (HOTEND_OVERSHOOT), \
     "HEATER_" STRINGIFY(N) "_MAXTEMP (" STRINGIFY(M) ") is too high for thermistor_" STRINGIFY(S) ".h with HOTEND_OVERSHOOT=" STRINGIFY(HOTEND_OVERSHOOT) ".");
   #define CHECK_MAXTEMP(N) TERN(TEMP_SENSOR_##N##_IS_THERMISTOR, CHECK_MAXTEMP_, CODE_0)(N, HEATER_##N##_MAXTEMP, TEMP_SENSOR_##N)
   REPEAT(HOTENDS, CHECK_MAXTEMP)
 
   #if HAS_PREHEAT
-    #define CHECK_PREHEAT__(N,P,T,M) static_assert(T <= M - HOTEND_OVERSHOOT, "PREHEAT_" STRINGIFY(P) "_TEMP_HOTEND (" STRINGIFY(T) ") must be less than HEATER_" STRINGIFY(N) "_MAXTEMP (" STRINGIFY(M) ") - " STRINGIFY(HOTEND_OVERSHOOT) ".");
+    #define CHECK_PREHEAT__(N,P,T,M) static_assert(T <= (M) - (HOTEND_OVERSHOOT), "PREHEAT_" STRINGIFY(P) "_TEMP_HOTEND (" STRINGIFY(T) ") must be less than HEATER_" STRINGIFY(N) "_MAXTEMP (" STRINGIFY(M) ") - " STRINGIFY(HOTEND_OVERSHOOT) ".");
     #define CHECK_PREHEAT_(N,P) CHECK_PREHEAT__(N, P, PREHEAT_##P##_TEMP_HOTEND, HEATER_##N##_MAXTEMP)
     #define CHECK_PREHEAT(P) REPEAT2(HOTENDS, CHECK_PREHEAT_, P)
     #if PREHEAT_COUNT >= 1
@@ -1694,7 +1694,7 @@ void Temperature::mintemp_error(const heater_id_t heater_id OPTARG(ERR_INCLUDE_T
       }
 
       float pid_output = power * 254.0f / mpc.heater_power + 1.0f;        // Ensure correct quantization into a range of 0 to 127
-      pid_output = constrain(pid_output, 0, MPC_MAX);
+      LIMIT(pid_output, 0, MPC_MAX);
 
       /* <-- add a slash to enable
         static uint32_t nexttime = millis() + 1000;
diff --git a/Marlin/src/module/temperature.h b/Marlin/src/module/temperature.h
index c69a272adf..088a17ec1b 100644
--- a/Marlin/src/module/temperature.h
+++ b/Marlin/src/module/temperature.h
@@ -597,7 +597,7 @@ class Temperature {
     #if HAS_HOTEND
       static hotend_info_t temp_hotend[HOTENDS];
       static constexpr celsius_t hotend_maxtemp[HOTENDS] = ARRAY_BY_HOTENDS(HEATER_0_MAXTEMP, HEATER_1_MAXTEMP, HEATER_2_MAXTEMP, HEATER_3_MAXTEMP, HEATER_4_MAXTEMP, HEATER_5_MAXTEMP, HEATER_6_MAXTEMP, HEATER_7_MAXTEMP);
-      static celsius_t hotend_max_target(const uint8_t e) { return hotend_maxtemp[e] - (HOTEND_OVERSHOOT); }
+      static constexpr celsius_t hotend_max_target(const uint8_t e) { return hotend_maxtemp[e] - (HOTEND_OVERSHOOT); }
     #endif
 
     #if HAS_HEATED_BED