diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index 1778fc28f..eaf000c3a 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -225,6 +225,8 @@ Here are some standard links for getting your machine calibrated:
 // so you shouldn't use it unless you are OK with PWM on your bed.  (see the comment on enabling PIDTEMPBED)
 #define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
 
+//#define PID_BED_DEBUG // Sends debug data to the serial port.
+
 #ifdef PIDTEMPBED
 //120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
 //from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
diff --git a/Marlin/configurator/config/Configuration.h b/Marlin/configurator/config/Configuration.h
index 89bfe5c18..57ec74f9b 100644
--- a/Marlin/configurator/config/Configuration.h
+++ b/Marlin/configurator/config/Configuration.h
@@ -234,6 +234,8 @@ Here are some standard links for getting your machine calibrated:
 // so you shouldn't use it unless you are OK with PWM on your bed.  (see the comment on enabling PIDTEMPBED)
 #define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
 
+//#define PID_BED_DEBUG // Sends debug data to the serial port.
+
 #ifdef PIDTEMPBED
 //120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
 //from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
diff --git a/Marlin/example_configurations/Felix/Configuration.h b/Marlin/example_configurations/Felix/Configuration.h
index 12a82f589..17da67953 100644
--- a/Marlin/example_configurations/Felix/Configuration.h
+++ b/Marlin/example_configurations/Felix/Configuration.h
@@ -215,6 +215,8 @@ Here are some standard links for getting your machine calibrated:
 // so you shouldn't use it unless you are OK with PWM on your bed.  (see the comment on enabling PIDTEMPBED)
 #define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
 
+//#define PID_BED_DEBUG // Sends debug data to the serial port.
+
 #ifdef PIDTEMPBED
 // Felix Foil Heater
    #define DEFAULT_bedKp 103.37
diff --git a/Marlin/example_configurations/Felix/Configuration_DUAL.h b/Marlin/example_configurations/Felix/Configuration_DUAL.h
index 9b1f10263..9766961a5 100644
--- a/Marlin/example_configurations/Felix/Configuration_DUAL.h
+++ b/Marlin/example_configurations/Felix/Configuration_DUAL.h
@@ -215,6 +215,8 @@ Here are some standard links for getting your machine calibrated:
 // so you shouldn't use it unless you are OK with PWM on your bed.  (see the comment on enabling PIDTEMPBED)
 #define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
 
+//#define PID_BED_DEBUG // Sends debug data to the serial port.
+
 #ifdef PIDTEMPBED
 // Felix Foil Heater
    #define DEFAULT_bedKp 103.37
diff --git a/Marlin/example_configurations/Hephestos/Configuration.h b/Marlin/example_configurations/Hephestos/Configuration.h
index 3ec047bb7..324554612 100644
--- a/Marlin/example_configurations/Hephestos/Configuration.h
+++ b/Marlin/example_configurations/Hephestos/Configuration.h
@@ -231,6 +231,8 @@ Here are some standard links for getting your machine calibrated:
 // so you shouldn't use it unless you are OK with PWM on your bed.  (see the comment on enabling PIDTEMPBED)
 #define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
 
+//#define PID_BED_DEBUG // Sends debug data to the serial port.
+
 #ifdef PIDTEMPBED
 //120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
 //from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
diff --git a/Marlin/example_configurations/K8200/Configuration.h b/Marlin/example_configurations/K8200/Configuration.h
index 1bd2d6325..b1c63eb4f 100644
--- a/Marlin/example_configurations/K8200/Configuration.h
+++ b/Marlin/example_configurations/K8200/Configuration.h
@@ -230,6 +230,8 @@ Here are some standard links for getting your machine calibrated:
 // so you shouldn't use it unless you are OK with PWM on your bed.  (see the comment on enabling PIDTEMPBED)
 #define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
 
+//#define PID_BED_DEBUG // Sends debug data to the serial port.
+
 #ifdef PIDTEMPBED
 //120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
 //from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
diff --git a/Marlin/example_configurations/SCARA/Configuration.h b/Marlin/example_configurations/SCARA/Configuration.h
index f59283266..6c12c2f19 100644
--- a/Marlin/example_configurations/SCARA/Configuration.h
+++ b/Marlin/example_configurations/SCARA/Configuration.h
@@ -254,6 +254,8 @@ Here are some standard links for getting your machine calibrated:
 // so you shouldn't use it unless you are OK with PWM on your bed.  (see the comment on enabling PIDTEMPBED)
 #define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
 
+//#define PID_BED_DEBUG // Sends debug data to the serial port.
+
 #ifdef PIDTEMPBED
 //120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
 //from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
diff --git a/Marlin/example_configurations/WITBOX/Configuration.h b/Marlin/example_configurations/WITBOX/Configuration.h
index afe8ad85a..8d348ba9b 100644
--- a/Marlin/example_configurations/WITBOX/Configuration.h
+++ b/Marlin/example_configurations/WITBOX/Configuration.h
@@ -230,6 +230,8 @@ Here are some standard links for getting your machine calibrated:
 // so you shouldn't use it unless you are OK with PWM on your bed.  (see the comment on enabling PIDTEMPBED)
 #define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
 
+//#define PID_BED_DEBUG // Sends debug data to the serial port.
+
 #ifdef PIDTEMPBED
 //120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
 //from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
diff --git a/Marlin/example_configurations/delta/generic/Configuration.h b/Marlin/example_configurations/delta/generic/Configuration.h
index e7cd86ff7..d9d150f42 100644
--- a/Marlin/example_configurations/delta/generic/Configuration.h
+++ b/Marlin/example_configurations/delta/generic/Configuration.h
@@ -258,6 +258,8 @@ Here are some standard links for getting your machine calibrated:
 // so you shouldn't use it unless you are OK with PWM on your bed.  (see the comment on enabling PIDTEMPBED)
 #define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
 
+//#define PID_BED_DEBUG // Sends debug data to the serial port.
+
 #ifdef PIDTEMPBED
 //120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
 //from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
diff --git a/Marlin/example_configurations/delta/kossel_mini/Configuration.h b/Marlin/example_configurations/delta/kossel_mini/Configuration.h
index 22db0e955..1ff5c482e 100644
--- a/Marlin/example_configurations/delta/kossel_mini/Configuration.h
+++ b/Marlin/example_configurations/delta/kossel_mini/Configuration.h
@@ -259,6 +259,8 @@ Here are some standard links for getting your machine calibrated:
 // so you shouldn't use it unless you are OK with PWM on your bed.  (see the comment on enabling PIDTEMPBED)
 #define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
 
+//#define PID_BED_DEBUG // Sends debug data to the serial port.
+
 #ifdef PIDTEMPBED
 //120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
 //from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
diff --git a/Marlin/example_configurations/makibox/Configuration.h b/Marlin/example_configurations/makibox/Configuration.h
index 187f71b09..cb61ca10f 100644
--- a/Marlin/example_configurations/makibox/Configuration.h
+++ b/Marlin/example_configurations/makibox/Configuration.h
@@ -228,6 +228,8 @@ Here are some standard links for getting your machine calibrated:
 // to increase the heat up rate. However, if changed, user must be aware of the safety concerns
 // of drawing too much current from the power supply.
 
+//#define PID_BED_DEBUG // Sends debug data to the serial port.
+
 #ifdef PIDTEMPBED
 //120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
 //from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
diff --git a/Marlin/example_configurations/tvrrug/Round2/Configuration.h b/Marlin/example_configurations/tvrrug/Round2/Configuration.h
index 3b3f2e58b..bf4e27960 100644
--- a/Marlin/example_configurations/tvrrug/Round2/Configuration.h
+++ b/Marlin/example_configurations/tvrrug/Round2/Configuration.h
@@ -230,6 +230,8 @@ Here are some standard links for getting your machine calibrated:
 // so you shouldn't use it unless you are OK with PWM on your bed.  (see the comment on enabling PIDTEMPBED)
 #define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
 
+//#define PID_BED_DEBUG // Sends debug data to the serial port.
+
 #ifdef PIDTEMPBED
 //120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
 //from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
diff --git a/Marlin/temperature.cpp b/Marlin/temperature.cpp
index ed5593057..506474206 100644
--- a/Marlin/temperature.cpp
+++ b/Marlin/temperature.cpp
@@ -636,6 +636,21 @@ float get_pid_output(int e) {
       pid_output = constrain(target_temperature_bed, 0, MAX_BED_POWER);
     #endif // PID_OPENLOOP
 
+    #ifdef PID_BED_DEBUG
+      SERIAL_ECHO_START;
+      SERIAL_ECHO(" PID_BED_DEBUG ");
+      SERIAL_ECHO(": Input ");
+      SERIAL_ECHO(current_temperature_bed);
+      SERIAL_ECHO(" Output ");
+      SERIAL_ECHO(pid_output);
+      SERIAL_ECHO(" pTerm ");
+      SERIAL_ECHO(pTerm_bed);
+      SERIAL_ECHO(" iTerm ");
+      SERIAL_ECHO(iTerm_bed);
+      SERIAL_ECHO(" dTerm ");
+      SERIAL_ECHOLN(dTerm_bed);
+    #endif //PID_BED_DEBUG
+
     return pid_output;
   }
 #endif