diff --git a/components/cn105/climateControls.cpp b/components/cn105/climateControls.cpp
index 00bf221..e18d011 100644
--- a/components/cn105/climateControls.cpp
+++ b/components/cn105/climateControls.cpp
@@ -14,7 +14,7 @@ void CN105Climate::checkPendingWantedSettings() {
     this->sendWantedSettings();
 }
 
-void logCheckWantedSettingsMutex(wantedHeatpumpSettings settings) {
+void logCheckWantedSettingsMutex(wantedHeatpumpSettings& settings) {
 
     if (settings.hasBeenSent) {
         ESP_LOGE("control", "Mutex lock faillure: wantedSettings should be locked while sending.");
diff --git a/components/cn105/cn105.h b/components/cn105/cn105.h
index 948c95d..2d35200 100644
--- a/components/cn105/cn105.h
+++ b/components/cn105/cn105.h
@@ -237,10 +237,10 @@ class CN105Climate : public climate::Climate, public Component, public uart::UAR
     void prepareInfoPacket(uint8_t* packet, int length);
     void prepareSetPacket(uint8_t* packet, int length);
 
-    void publishStateToHA(heatpumpSettings settings);
+    void publishStateToHA(heatpumpSettings& settings);
     void publishWantedSettingsStateToHA();
 
-    void heatpumpUpdate(heatpumpSettings settings);
+    void heatpumpUpdate(heatpumpSettings& settings);
 
     void statusChanged(heatpumpStatus status);
 
@@ -257,8 +257,8 @@ class CN105Climate : public climate::Climate, public Component, public uart::UAR
     void setActionIfOperatingAndCompressorIsActiveTo(climate::ClimateAction action);
     void hpPacketDebug(uint8_t* packet, unsigned int length, const char* packetDirection);
 
-    void debugSettings(const char* settingName, heatpumpSettings settings);
-    void debugSettings(const char* settingName, wantedHeatpumpSettings settings);
+    void debugSettings(const char* settingName, heatpumpSettings& settings);
+    void debugSettings(const char* settingName, wantedHeatpumpSettings& settings);
     void debugStatus(const char* statusName, heatpumpStatus status);
     void debugSettingsAndStatus(const char* settingName, heatpumpSettings settings, heatpumpStatus status);
     void debugClimate(const char* settingName);
diff --git a/components/cn105/hp_readings.cpp b/components/cn105/hp_readings.cpp
index 873aa98..8d72b60 100644
--- a/components/cn105/hp_readings.cpp
+++ b/components/cn105/hp_readings.cpp
@@ -473,7 +473,7 @@ void CN105Climate::statusChanged(heatpumpStatus status) {
 }
 
 
-void CN105Climate::publishStateToHA(heatpumpSettings settings) {
+void CN105Climate::publishStateToHA(heatpumpSettings& settings) {
 
     if ((this->wantedSettings.mode == nullptr) && (this->wantedSettings.power == nullptr)) {        // to prevent overwriting a user demand
         checkPowerAndModeSettings(settings);
@@ -508,7 +508,7 @@ void CN105Climate::publishStateToHA(heatpumpSettings settings) {
 }
 
 
-void CN105Climate::heatpumpUpdate(heatpumpSettings settings) {
+void CN105Climate::heatpumpUpdate(heatpumpSettings& settings) {
     // settings correponds to current settings
     ESP_LOGV(LOG_SETTINGS_TAG, "Settings received");
 
diff --git a/components/cn105/utils.cpp b/components/cn105/utils.cpp
index e611305..79494f3 100644
--- a/components/cn105/utils.cpp
+++ b/components/cn105/utils.cpp
@@ -55,7 +55,7 @@ const char* CN105Climate::getIfNotNull(const char* what, const char* defaultValu
     return what;
 }
 
-void CN105Climate::debugSettings(const char* settingName, wantedHeatpumpSettings settings) {
+void CN105Climate::debugSettings(const char* settingName, wantedHeatpumpSettings& settings) {
 #ifdef USE_ESP32
     ESP_LOGD(LOG_ACTION_EVT_TAG, "[%s]-> [power: %s, target °C: %.1f, mode: %s, fan: %s, vane: %s, wvane: %s, hasChanged ? -> %s, hasBeenSent ? -> %s]",
         getIfNotNull(settingName, "unnamed"),
@@ -98,7 +98,7 @@ void CN105Climate::debugClimate(const char* settingName) {
 
 
 
-void CN105Climate::debugSettings(const char* settingName, heatpumpSettings settings) {
+void CN105Climate::debugSettings(const char* settingName, heatpumpSettings& settings) {
 #ifdef USE_ESP32
     ESP_LOGD(LOG_SETTINGS_TAG, "[%s]-> [power: %s, target °C: %.1f, mode: %s, fan: %s, vane: %s, wvane: %s]",
         getIfNotNull(settingName, "unnamed"),