diff --git a/pytec/tec_qt.ui b/pytec/tec_qt.ui
index fb95c2f..d618808 100644
--- a/pytec/tec_qt.ui
+++ b/pytec/tec_qt.ui
@@ -25,6 +25,10 @@
   <property name="windowTitle">
    <string>Thermostat Control Panel</string>
   </property>
+  <property name="windowIcon">
+   <iconset>
+    <normaloff>thermostat-icon-256x256.png</normaloff>thermostat-icon-256x256.png</iconset>
+  </property>
   <widget class="QWidget" name="main_widget">
    <property name="sizePolicy">
     <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
diff --git a/pytec/thermostat-icon-256x256.png b/pytec/thermostat-icon-256x256.png
new file mode 100644
index 0000000..7e51995
Binary files /dev/null and b/pytec/thermostat-icon-256x256.png differ
diff --git a/pytec/ui_tec_qt.py b/pytec/ui_tec_qt.py
index e879fbc..aec7571 100644
--- a/pytec/ui_tec_qt.py
+++ b/pytec/ui_tec_qt.py
@@ -15,6 +15,9 @@ class Ui_MainWindow(object):
         MainWindow.resize(1280, 720)
         MainWindow.setMinimumSize(QtCore.QSize(1280, 720))
         MainWindow.setMaximumSize(QtCore.QSize(3840, 2160))
+        icon = QtGui.QIcon()
+        icon.addPixmap(QtGui.QPixmap("thermostat-icon-256x256.png"), QtGui.QIcon.Mode.Normal, QtGui.QIcon.State.Off)
+        MainWindow.setWindowIcon(icon)
         self.main_widget = QtWidgets.QWidget(parent=MainWindow)
         sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Policy.Expanding, QtWidgets.QSizePolicy.Policy.Expanding)
         sizePolicy.setHorizontalStretch(1)