diff --git a/src/main/java/com/bigboxer23/eco_net/EcoNetAPI.java b/src/main/java/com/bigboxer23/eco_net/EcoNetAPI.java
index 2b91a32..a7ffe32 100644
--- a/src/main/java/com/bigboxer23/eco_net/EcoNetAPI.java
+++ b/src/main/java/com/bigboxer23/eco_net/EcoNetAPI.java
@@ -200,9 +200,15 @@ public void subscribeToEvents(IEventSubscriber subscriber) {
 		subscribers.add(subscriber);
 	}
 
+	/**
+	 * Sets the devices mode
+	 *
+	 * @param deviceId device id (name)
+	 * @param serialNumber serial number of device
+	 * @param mode See {@link Modes} for possible mode values
+	 */
 	public void setMode(String deviceId, String serialNumber, int mode) {
-		// TODO:
-
+		sendCommand(deviceId, serialNumber, "@MODE", mode);
 	}
 
 	/**
@@ -210,7 +216,7 @@ public void setMode(String deviceId, String serialNumber, int mode) {
 	 *
 	 * @param deviceId device id (name)
 	 * @param serialNumber serial number of device
-	 * @param setpoint setpoint to heat to
+	 * @param setpoint setpoint to heat to in deg fahrenheit
 	 */
 	public void setTemperatureSetPoint(String deviceId, String serialNumber, int setpoint) {
 		sendCommand(deviceId, serialNumber, "@SETPOINT", setpoint);
diff --git a/src/main/java/com/bigboxer23/eco_net/data/Modes.java b/src/main/java/com/bigboxer23/eco_net/data/Modes.java
index ee76125..b8caaf7 100644
--- a/src/main/java/com/bigboxer23/eco_net/data/Modes.java
+++ b/src/main/java/com/bigboxer23/eco_net/data/Modes.java
@@ -6,8 +6,14 @@
 /** */
 @Data
 public class Modes {
+	public static final int HEAT_PUMP_MODE = 0;
+	public static final int VACATION_MODE = 1;
+
 	private Constraints constraints;
 
 	@Json(name = "status")
 	private String activeMode;
+
+	@Json(name = "value")
+	private int activeValue;
 }
diff --git a/src/test/java/com/bigboxer23/eco_net/EcoNetApiTest.java b/src/test/java/com/bigboxer23/eco_net/EcoNetApiTest.java
index bbc2a99..7590f99 100644
--- a/src/test/java/com/bigboxer23/eco_net/EcoNetApiTest.java
+++ b/src/test/java/com/bigboxer23/eco_net/EcoNetApiTest.java
@@ -2,10 +2,7 @@
 
 import static org.junit.jupiter.api.Assertions.*;
 
-import com.bigboxer23.eco_net.data.EnergyResults;
-import com.bigboxer23.eco_net.data.Equipment;
-import com.bigboxer23.eco_net.data.Location;
-import com.bigboxer23.eco_net.data.UserData;
+import com.bigboxer23.eco_net.data.*;
 import com.bigboxer23.utils.properties.PropertyUtils;
 import java.util.Optional;
 import org.junit.jupiter.api.Test;
@@ -92,6 +89,34 @@ public void fetchEnergyUsage() {
 		});
 	}
 
+	@Test
+	public void setMode() {
+		EcoNetAPI api = EcoNetAPI.getInstance(email, password);
+		api.fetchUserData().ifPresent(userData -> {
+			Location location = userData.getResults().getLocations().get(0);
+			Equipment equipment = location.getEquipments().get(0);
+			Modes currentMode = equipment.getModes();
+			api.setMode(equipment.getDeviceName(), equipment.getSerialNumber(), Modes.VACATION_MODE);
+			try {
+				Thread.sleep(5000);
+			} catch (InterruptedException theE) {
+			}
+			api.fetchUserData().ifPresent(updatedUserData -> {
+				assertEquals(
+						Modes.VACATION_MODE,
+						updatedUserData
+								.getResults()
+								.getLocations()
+								.get(0)
+								.getEquipments()
+								.get(0)
+								.getModes()
+								.getActiveValue());
+			});
+			api.setMode(equipment.getDeviceName(), equipment.getSerialNumber(), currentMode.getActiveValue());
+		});
+	}
+
 	@Test
 	public void setTemperatureSetPoint() {
 		EcoNetAPI api = EcoNetAPI.getInstance(email, password);