diff --git a/CHANGELOG_LATEST.md b/CHANGELOG_LATEST.md
index 5c3b66f11..5177d8985 100644
--- a/CHANGELOG_LATEST.md
+++ b/CHANGELOG_LATEST.md
@@ -33,6 +33,7 @@ This release is based on the latest Espressif/Arduino core version 3. It brings
 - possible crash when the WebUI asked for version information while the versions.json refresh was rewriting the cache from the main loop task
 - HTTP client could write past a fixed 64 byte buffer when a URL had a hostname of 64 characters or more, could busy-spin for the whole read budget if the socket reported bytes it wouldn't return, and buffered responses without any size limit
 - the "Ethernet clock mode (GPIO16/17) conflicts with PSRAM" error was never logged because Ethernet had already been skipped by the time the check ran
+- heat limit entities (`maxheatcomp`, `maxheatheat`, `dhw.maxheat`) read as unknown on heat pumps with an auxiliary heater larger than 9 kW - `enum_maxHeat` was missing the 12 kW and 15 kW steps
 
 ## Changed
 
diff --git a/src/core/locale_common.h b/src/core/locale_common.h
index be2db4821..2974b708f 100644
--- a/src/core/locale_common.h
+++ b/src/core/locale_common.h
@@ -224,6 +224,8 @@ MAKE_NOTRANSLATION(3kW, "3 kW")
 MAKE_NOTRANSLATION(4kW, "4 kW")
 MAKE_NOTRANSLATION(6kW, "6 kW")
 MAKE_NOTRANSLATION(9kW, "9 kW")
+MAKE_NOTRANSLATION(12kW, "12 kW")
+MAKE_NOTRANSLATION(15kW, "15 kW")
 MAKE_NOTRANSLATION(L1, "L1")
 MAKE_NOTRANSLATION(L2, "L2")
 MAKE_NOTRANSLATION(L3, "L3")
@@ -312,7 +314,7 @@ MAKE_ENUM(enum_comfort1, FL_(high_comfort), FL_(eco))
 MAKE_ENUM(enum_comfort2, FL_(eco), FL_(high_comfort))
 MAKE_ENUM(enum_flow, FL_(off), FL_(flow), FL_(bufferedflow), FL_(buffer), FL_(layeredbuffer))
 MAKE_ENUM(enum_reset, FL_(dash), FL_(maintenance), FL_(error), FL_(history), FL_(message), FL_(hp_error), FL_(burn_starts), FL_(factory))
-MAKE_ENUM(enum_maxHeat, FL_(0kW), FL_(2kW), FL_(3kW), FL_(4kW), FL_(6kW), FL_(9kW))
+MAKE_ENUM(enum_maxHeat, FL_(0kW), FL_(2kW), FL_(3kW), FL_(4kW), FL_(6kW), FL_(9kW), FL_(12kW), FL_(15kW))
 MAKE_ENUM(enum_maxHeat1, FL_(0kW), FL_(3kW), FL_(6kW), FL_(9kW))
 MAKE_ENUM(enum_maxHeat2, FL_(3kW), FL_(6kW), FL_(9kW))
 MAKE_ENUM(enum_pumpMode, FL_(proportional), FL_(deltaP1), FL_(deltaP2), FL_(deltaP3), FL_(deltaP4))