diff --git a/Marlin/src/core/macros.h b/Marlin/src/core/macros.h
index 3029009c06b8..6a0c73c6684f 100644
--- a/Marlin/src/core/macros.h
+++ b/Marlin/src/core/macros.h
@@ -712,10 +712,11 @@
     ( DEFER2(__RREPEAT2)()(ADD1(_RPT_I),SUB1(_RPT_N),_RPT_OP,V) ) \
     ( /* Do nothing */ )
 #define __RREPEAT2() _RREPEAT2
-#define RREPEAT_S(S,N,OP)        EVAL1024(_RREPEAT(S,SUB##S(N),OP))
-#define RREPEAT(N,OP)            RREPEAT_S(0,N,OP)
-#define RREPEAT2_S(S,N,OP,V...)  EVAL1024(_RREPEAT2(S,SUB##S(N),OP,V))
-#define RREPEAT2(N,OP,V...)      RREPEAT2_S(0,N,OP,V)
+#define RREPEAT_S(S,N,OP)       EVAL1024(_RREPEAT(S,SUB##S(N),OP))
+#define RREPEAT(N,OP)           RREPEAT_S(0,N,OP)
+#define RREPEAT_1(N,OP)         RREPEAT_S(1,INCREMENT(N),OP)
+#define RREPEAT2_S(S,N,OP,V...) EVAL1024(_RREPEAT2(S,SUB##S(N),OP,V))
+#define RREPEAT2(N,OP,V...)     RREPEAT2_S(0,N,OP,V)
 
 // Call OP(A) with each item as an argument
 #define _MAP(_MAP_OP,A,V...)       \
diff --git a/Marlin/src/inc/Conditionals_adv.h b/Marlin/src/inc/Conditionals_adv.h
index 47ca8f676678..faf882389179 100644
--- a/Marlin/src/inc/Conditionals_adv.h
+++ b/Marlin/src/inc/Conditionals_adv.h
@@ -223,13 +223,12 @@
   #define TEMP_SENSOR_0_IS_AD8495 1
 #elif TEMP_SENSOR_0 == -1
   #define TEMP_SENSOR_0_IS_AD595 1
+#elif TEMP_SENSOR_0 == 1000
+  #define TEMP_SENSOR_0_IS_CUSTOM 1
+#elif TEMP_SENSOR_0 == 998 || TEMP_SENSOR_0 == 999
+  #define TEMP_SENSOR_0_IS_DUMMY 1
 #elif TEMP_SENSOR_0 > 0
   #define TEMP_SENSOR_0_IS_THERMISTOR 1
-  #if TEMP_SENSOR_0 == 1000
-    #define TEMP_SENSOR_0_IS_CUSTOM 1
-  #elif TEMP_SENSOR_0 == 998 || TEMP_SENSOR_0 == 999
-    #define TEMP_SENSOR_0_IS_DUMMY 1
-  #endif
 #else
   #undef HEATER_0_MINTEMP
   #undef HEATER_0_MAXTEMP
@@ -269,13 +268,12 @@
   #define TEMP_SENSOR_1_IS_AD8495 1
 #elif TEMP_SENSOR_1 == -1
   #define TEMP_SENSOR_1_IS_AD595 1
+#elif TEMP_SENSOR_1 == 1000
+  #define TEMP_SENSOR_1_IS_CUSTOM 1
+#elif TEMP_SENSOR_1 == 998 || TEMP_SENSOR_1 == 999
+  #define TEMP_SENSOR_1_IS_DUMMY 1
 #elif TEMP_SENSOR_1 > 0
   #define TEMP_SENSOR_1_IS_THERMISTOR 1
-  #if TEMP_SENSOR_1 == 1000
-    #define TEMP_SENSOR_1_IS_CUSTOM 1
-  #elif TEMP_SENSOR_1 == 998 || TEMP_SENSOR_1 == 999
-    #define TEMP_SENSOR_1_IS_DUMMY 1
-  #endif
 #else
   #undef HEATER_1_MINTEMP
   #undef HEATER_1_MAXTEMP
@@ -315,18 +313,72 @@
   #define TEMP_SENSOR_2_IS_AD8495 1
 #elif TEMP_SENSOR_2 == -1
   #define TEMP_SENSOR_2_IS_AD595 1
+#elif TEMP_SENSOR_2 == 1000
+  #define TEMP_SENSOR_2_IS_CUSTOM 1
+#elif TEMP_SENSOR_2 == 998 || TEMP_SENSOR_2 == 999
+  #define TEMP_SENSOR_2_IS_DUMMY 1
 #elif TEMP_SENSOR_2 > 0
   #define TEMP_SENSOR_2_IS_THERMISTOR 1
-  #if TEMP_SENSOR_2 == 1000
-    #define TEMP_SENSOR_2_IS_CUSTOM 1
-  #elif TEMP_SENSOR_2 == 998 || TEMP_SENSOR_2 == 999
-    #define TEMP_SENSOR_2_IS_DUMMY 1
-  #endif
 #else
   #undef HEATER_2_MINTEMP
   #undef HEATER_2_MAXTEMP
 #endif
 
+#if TEMP_SENSOR_3 == 1000
+  #define TEMP_SENSOR_3_IS_CUSTOM 1
+#elif TEMP_SENSOR_3 == 998 || TEMP_SENSOR_3 == 999
+  #define TEMP_SENSOR_3_IS_DUMMY 1
+#elif TEMP_SENSOR_3 > 0
+  #define TEMP_SENSOR_3_IS_THERMISTOR 1
+#elif !TEMP_SENSOR_3
+  #undef HEATER_3_MINTEMP
+  #undef HEATER_3_MAXTEMP
+#endif
+
+#if TEMP_SENSOR_4 == 1000
+  #define TEMP_SENSOR_4_IS_CUSTOM 1
+#elif TEMP_SENSOR_4 == 998 || TEMP_SENSOR_4 == 999
+  #define TEMP_SENSOR_4_IS_DUMMY 1
+#elif TEMP_SENSOR_4 > 0
+  #define TEMP_SENSOR_4_IS_THERMISTOR 1
+#elif !TEMP_SENSOR_4
+  #undef HEATER_4_MINTEMP
+  #undef HEATER_4_MAXTEMP
+#endif
+
+#if TEMP_SENSOR_5 == 1000
+  #define TEMP_SENSOR_5_IS_CUSTOM 1
+#elif TEMP_SENSOR_5 == 998 || TEMP_SENSOR_5 == 999
+  #define TEMP_SENSOR_5_IS_DUMMY 1
+#elif TEMP_SENSOR_5 > 0
+  #define TEMP_SENSOR_5_IS_THERMISTOR 1
+#elif !TEMP_SENSOR_5
+  #undef HEATER_5_MINTEMP
+  #undef HEATER_5_MAXTEMP
+#endif
+
+#if TEMP_SENSOR_6 == 1000
+  #define TEMP_SENSOR_6_IS_CUSTOM 1
+#elif TEMP_SENSOR_6 == 998 || TEMP_SENSOR_6 == 999
+  #define TEMP_SENSOR_6_IS_DUMMY 1
+#elif TEMP_SENSOR_6 > 0
+  #define TEMP_SENSOR_6_IS_THERMISTOR 1
+#elif !TEMP_SENSOR_6
+  #undef HEATER_6_MINTEMP
+  #undef HEATER_6_MAXTEMP
+#endif
+
+#if TEMP_SENSOR_7 == 1000
+  #define TEMP_SENSOR_7_IS_CUSTOM 1
+#elif TEMP_SENSOR_7 == 998 || TEMP_SENSOR_7 == 999
+  #define TEMP_SENSOR_7_IS_DUMMY 1
+#elif TEMP_SENSOR_7 > 0
+  #define TEMP_SENSOR_7_IS_THERMISTOR 1
+#elif !TEMP_SENSOR_7
+  #undef HEATER_7_MINTEMP
+  #undef HEATER_7_MAXTEMP
+#endif
+
 #if TEMP_SENSOR_IS_MAX_TC(REDUNDANT)
   #if TEMP_SENSOR_REDUNDANT == -5
     #if !REDUNDANT_TEMP_MATCH(SOURCE, E0) && !REDUNDANT_TEMP_MATCH(SOURCE, E1) && !REDUNDANT_TEMP_MATCH(SOURCE, E2)
diff --git a/Marlin/src/lcd/marlinui.cpp b/Marlin/src/lcd/marlinui.cpp
index 601a41eb66c3..308c03e4eb5d 100644
--- a/Marlin/src/lcd/marlinui.cpp
+++ b/Marlin/src/lcd/marlinui.cpp
@@ -149,7 +149,7 @@ constexpr uint8_t epps = ENCODER_PULSES_PER_STEP;
     const preheat_t &pre = material_preset[m];
     TERN_(HAS_HOTEND,           if (TEST(pmask, PT_HOTEND))  thermalManager.setTargetHotend(pre.hotend_temp, e));
     TERN_(HAS_HEATED_BED,       if (TEST(pmask, PT_BED))     thermalManager.setTargetBed(pre.bed_temp));
-    //TERN_(HAS_HEATED_CHAMBER, if (TEST(pmask, PT_CHAMBER)) thermalManager.setTargetBed(pre.chamber_temp));
+    //TERN_(HAS_HEATED_CHAMBER, if (TEST(pmask, PT_CHAMBER)) thermalManager.setTargetChamber(pre.chamber_temp));
     TERN_(HAS_FAN,              if (TEST(pmask, PT_FAN))     thermalManager.set_fan_speed(0, pre.fan_speed));
   }
 #endif
diff --git a/Marlin/src/module/temperature.cpp b/Marlin/src/module/temperature.cpp
index b1bc01575769..87bc4f4450b4 100644
--- a/Marlin/src/module/temperature.cpp
+++ b/Marlin/src/module/temperature.cpp
@@ -317,8 +317,22 @@ PGMSTR(str_t_heating_failed, STR_T_HEATING_FAILED);
 
 #if HAS_HOTEND
   hotend_info_t Temperature::temp_hotend[HOTENDS];
-  #define _HMT(N) HEATER_##N##_MAXTEMP,
   const celsius_t Temperature::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);
+
+  // 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, \
+    "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) CHECK_PREHEAT__(N, P, PREHEAT_##P##_TEMP_HOTEND, HEATER_##N##_MAXTEMP);
+    #define CHECK_PREHEAT(P) REPEAT2(HOTENDS, CHECK_PREHEAT_, P);
+    RREPEAT_1(PREHEAT_COUNT, CHECK_PREHEAT)
+  #endif
+
 #endif
 
 #if HAS_TEMP_REDUNDANT
diff --git a/Marlin/src/module/thermistor/thermistor_2000.h b/Marlin/src/module/thermistor/thermistor_2000.h
index 3815a6f2569a..6393c980eac6 100644
--- a/Marlin/src/module/thermistor/thermistor_2000.h
+++ b/Marlin/src/module/thermistor/thermistor_2000.h
@@ -23,12 +23,12 @@
 
 // R25 = 100 KOhm, beta25 = 4550 K, 4.7 kOhm pull-up, TDK NTCG104LH104KT1 https://product.tdk.com/en/search/sensor/ntc/chip-ntc-thermistor/info?part_no=NTCG104LH104KT1
 constexpr temp_entry_t temptable_2000[] PROGMEM = {
-{ OV(313),   125 },
-{ OV(347),   120 },
-{ OV(383),   115 },
-{ OV(422),   110 },
-{ OV(463),   105 },
-{ OV(506),   100 },
+{ OV(313),  125 },
+{ OV(347),  120 },
+{ OV(383),  115 },
+{ OV(422),  110 },
+{ OV(463),  105 },
+{ OV(506),  100 },
 { OV(549),   95 },
 { OV(594),   90 },
 { OV(638),   85 },