diff --git a/config/application-configuration.json b/config/application-configuration.json
index 14221af..d6395c8 100755
--- a/config/application-configuration.json
+++ b/config/application-configuration.json
@@ -23,6 +23,17 @@
         "optional": true,
         "description": "The temperature of the cool fluid returning to the heat pump in degrees Celsius (°C)"
     },
+    "RoomTemperatureZone1": {
+        "displayOptions": {
+            "label": "Inside",
+            "color": "purple"
+        },
+        "type": "feed",
+        "autoname": "RoomTemperatureZone1",
+        "engine": 5,
+        "optional": true,
+        "description": "The room temperature in Zone1 in degrees Celsius (°C)"
+    },
     "OutdoorTemperature": {
         "displayOptions": {
             "label": "Outside",
@@ -334,4 +345,4 @@
         "name": "DesignFlowTemperature",
         "description": "When showing nominal efficiencies, what design flow temp should be used"
     }
-}
\ No newline at end of file
+}
diff --git a/mmspheatpump.php b/mmspheatpump.php
index 44b265a..49a27cc 100755
--- a/mmspheatpump.php
+++ b/mmspheatpump.php
@@ -168,7 +168,7 @@
                     <span class="energy-summary" data-input-config-key="HeatingEnergyConsumed1" data-output-config-key="HeatingEnergyProduced1">
                 </div>
 
-                <div data-label="Temperature" data-config-keys="FlowTemperature,ReturnTemperature,OutdoorTemperature,EffectiveTemperature,OutdoorDewPoint,TargetHCTemperatureZone1" class="chart"></div>
+                <div data-label="Temperature" data-config-keys="FlowTemperature,ReturnTemperature,OutdoorTemperature,RoomTemperatureZone1,EffectiveTemperature,OutdoorDewPoint,TargetHCTemperatureZone1" class="chart"></div>
 
 
                 <div class="section-heading">