Index: firmware/App/Controllers/Heaters.h
===================================================================
diff -u -r830213bc6dcc1a684610caf78c79d55f2cb41e93 -r3ebcff44116a7853d2011c7b2f1eb38c1f37ba2a
--- firmware/App/Controllers/Heaters.h	(.../Heaters.h)	(revision 830213bc6dcc1a684610caf78c79d55f2cb41e93)
+++ firmware/App/Controllers/Heaters.h	(.../Heaters.h)	(revision 3ebcff44116a7853d2011c7b2f1eb38c1f37ba2a)
@@ -56,6 +56,7 @@
     F32 d5_PWMPeriod;                             ///< Primary heater PWM period
     F32 d5_adjsutedTargetTemp;                    ///< Primary heater adjsuted target temperature
     F32 d5_targetTempFromTD;                      ///< User set target temperature
+    F32 d5_efficiency;                            ///< AC Heater efficiency
 #ifdef __HEATERS_DEBUG__
     F32 dbg1;
     F32 dbg2;