diff --git a/essentials-framework/Essentials Core/PepperDashEssentialsBase/Feedbacks/BoolOutputLogicals.cs b/essentials-framework/Essentials Core/PepperDashEssentialsBase/Feedbacks/BoolOutputLogicals.cs
index 3074254e..a8dae7b8 100644
--- a/essentials-framework/Essentials Core/PepperDashEssentialsBase/Feedbacks/BoolOutputLogicals.cs	
+++ b/essentials-framework/Essentials Core/PepperDashEssentialsBase/Feedbacks/BoolOutputLogicals.cs	
@@ -23,7 +23,7 @@ namespace PepperDash.Essentials.Core
 
 		protected bool ComputedValue;
 
-		public BoolFeedbackLogic()
+	    protected BoolFeedbackLogic()
 		{
 			Output = new BoolFeedback(() => ComputedValue);
 		}	
@@ -40,21 +40,18 @@ namespace PepperDash.Essentials.Core
 
 		public void AddOutputsIn(List<BoolFeedback> outputs)
 		{
-			foreach (var o in outputs)
-			{
-				// skip existing
-				if (OutputsIn.Contains(o)) continue;
-			
-				OutputsIn.Add(o);
-				o.OutputChange += AnyInput_OutputChange;
-			}
-			Evaluate();
+		    foreach (var o in outputs.Where(o => !OutputsIn.Contains(o)))
+		    {
+		        OutputsIn.Add(o);
+		        o.OutputChange += AnyInput_OutputChange;
+		    }
+		    Evaluate();
 		}
 
-		public void RemoveOutputIn(BoolFeedback output)
+	    public void RemoveOutputIn(BoolFeedback output)
 		{
 			// Don't double up outputs
-			if (OutputsIn.Contains(output)) return;
+			if (!OutputsIn.Contains(output)) return;
 
 			OutputsIn.Remove(output);
 			output.OutputChange -= AnyInput_OutputChange;
@@ -71,6 +68,12 @@ namespace PepperDash.Essentials.Core
 			Evaluate();
 		}
 
+	    public void ClearOutputs()
+	    {
+	        OutputsIn.Clear();
+            Evaluate();
+	    }
+
 		void AnyInput_OutputChange(object sender, EventArgs e)
 		{
 			Evaluate();
@@ -85,11 +88,12 @@ namespace PepperDash.Essentials.Core
 		{
 			var prevValue = ComputedValue;
 			var newValue = OutputsIn.All(o => o.BoolValue);
-			if (newValue != prevValue)
-			{
-				ComputedValue = newValue;
-				Output.FireUpdate();
-			}
+		    if (newValue == prevValue)
+		    {
+		        return;
+		    }
+		    ComputedValue = newValue;
+		    Output.FireUpdate();
 		}
 	}
 
@@ -99,33 +103,35 @@ namespace PepperDash.Essentials.Core
 		{
 			var prevValue = ComputedValue;
 			var newValue = OutputsIn.Any(o => o.BoolValue);
-			if (newValue != prevValue)
-			{
-				ComputedValue = newValue;
-				Output.FireUpdate();
-			}
+		    if (newValue == prevValue)
+		    {
+		        return;
+		    }
+		    ComputedValue = newValue;
+		    Output.FireUpdate();
 		}
 	}
 
 	public class BoolFeedbackLinq : BoolFeedbackLogic
 	{
-		Func<IEnumerable<BoolFeedback>, bool> Predicate;
+	    readonly Func<IEnumerable<BoolFeedback>, bool> _predicate;
 
 		public BoolFeedbackLinq(Func<IEnumerable<BoolFeedback>, bool> predicate)
 			: base()
 		{
-			Predicate = predicate;
+			_predicate = predicate;
 		}
 
 		protected override void Evaluate()
 		{
 			var prevValue = ComputedValue;
-			var newValue = Predicate(OutputsIn);
-			if (newValue != prevValue)
-			{
-				ComputedValue = newValue;
-				Output.FireUpdate();
-			}
+			var newValue = _predicate(OutputsIn);
+		    if (newValue == prevValue)
+		    {
+		        return;
+		    }
+		    ComputedValue = newValue;
+		    Output.FireUpdate();
 		} 
 	}
 }
\ No newline at end of file
diff --git a/essentials-framework/Essentials Core/PepperDashEssentialsBase/Occupancy/IOccupancyStatusProviderAggregator.cs b/essentials-framework/Essentials Core/PepperDashEssentialsBase/Occupancy/IOccupancyStatusProviderAggregator.cs
index c321dcad..3da9c0dc 100644
--- a/essentials-framework/Essentials Core/PepperDashEssentialsBase/Occupancy/IOccupancyStatusProviderAggregator.cs	
+++ b/essentials-framework/Essentials Core/PepperDashEssentialsBase/Occupancy/IOccupancyStatusProviderAggregator.cs	
@@ -2,17 +2,18 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-using Crestron.SimplSharp;
-
+using Crestron.SimplSharp;
+using Crestron.SimplSharpPro.GeneralIO;
 using PepperDash.Core;
 using PepperDash.Essentials.Core;
+using PepperDash.Essentials.Core.Config;
 
 namespace PepperDash.Essentials.Core
 {
     /// <summary>
     /// Aggregates the RoomIsOccupied feedbacks of one or more IOccupancyStatusProvider objects
     /// </summary>
-    public class IOccupancyStatusProviderAggregator : Device, IOccupancyStatusProvider
+    public class IOccupancyStatusProviderAggregator : EssentialsDevice, IOccupancyStatusProvider
     {
         /// <summary>
         /// Aggregated feedback of all linked IOccupancyStatusProvider devices
@@ -21,16 +22,51 @@ namespace PepperDash.Essentials.Core
         {
             get
             {
-                return AggregatedOccupancyStatus.Output;
+                return _aggregatedOccupancyStatus.Output;
             }
         }
 
-        private BoolFeedbackOr AggregatedOccupancyStatus;
+        private readonly BoolFeedbackOr _aggregatedOccupancyStatus;
 
         public IOccupancyStatusProviderAggregator(string key, string name) 
             : base(key, name)
         {
-            AggregatedOccupancyStatus = new BoolFeedbackOr();
+            _aggregatedOccupancyStatus = new BoolFeedbackOr();
+        }
+
+        public IOccupancyStatusProviderAggregator(string key, string name, OccupancyAggregatorConfig config)
+            : this(key, name)
+        {
+            AddPostActivationAction(() =>
+            {
+                if (config.DeviceKeys.Count == 0)
+                {
+                    return;
+                }
+
+                foreach (var deviceKey in config.DeviceKeys)
+                {
+                    var device = DeviceManager.GetDeviceForKey(deviceKey);
+
+                    if (device == null)
+                    {
+                        Debug.Console(0, this, Debug.ErrorLogLevel.Notice,
+                            "Unable to retrieve Occupancy provider with key {0}", deviceKey);
+                        continue;
+                    }
+
+                    var provider = device as IOccupancyStatusProvider;
+
+                    if (provider == null)
+                    {
+                        Debug.Console(0, this, Debug.ErrorLogLevel.Notice,
+                            "Device with key {0} does NOT implement IOccupancyStatusProvider. Please check configuration.");
+                        continue;
+                    }
+
+                    AddOccupancyStatusProvider(provider);
+                }
+            });
         }
 
         /// <summary>
@@ -39,7 +75,35 @@ namespace PepperDash.Essentials.Core
         /// <param name="statusProvider"></param>
         public void AddOccupancyStatusProvider(IOccupancyStatusProvider statusProvider)
         {
-            AggregatedOccupancyStatus.AddOutputIn(statusProvider.RoomIsOccupiedFeedback);
+            _aggregatedOccupancyStatus.AddOutputIn(statusProvider.RoomIsOccupiedFeedback);
+        }
+
+        public void RemoveOccupancyStatusProvider(IOccupancyStatusProvider statusProvider)
+        {
+            _aggregatedOccupancyStatus.RemoveOutputIn(statusProvider.RoomIsOccupiedFeedback);
+        }
+
+        public void ClearOccupancyStatusProviders()
+        {
+            _aggregatedOccupancyStatus.ClearOutputs();
         }
+    }
+
+    public class OccupancyAggregatorFactory : EssentialsDeviceFactory<IOccupancyStatusProviderAggregator>
+    {
+        public OccupancyAggregatorFactory()
+        {
+            TypeNames = new List<string> { "occupancyAggregator", "occAggregate" };
+        }
+
+
+        public override EssentialsDevice BuildDevice(DeviceConfig dc)
+        {
+            Debug.Console(1, "Factory Attempting to create new GlsOccupancySensorBaseController Device");
+
+            var config = dc.Properties.ToObject<OccupancyAggregatorConfig>();
+                
+            return new IOccupancyStatusProviderAggregator(dc.Key, dc.Name, config);
+        }
     }
 }
\ No newline at end of file
diff --git a/essentials-framework/Essentials Core/PepperDashEssentialsBase/Occupancy/OccupancyAggregatorConfig.cs b/essentials-framework/Essentials Core/PepperDashEssentialsBase/Occupancy/OccupancyAggregatorConfig.cs
new file mode 100644
index 00000000..ef237e72
--- /dev/null
+++ b/essentials-framework/Essentials Core/PepperDashEssentialsBase/Occupancy/OccupancyAggregatorConfig.cs	
@@ -0,0 +1,15 @@
+using System.Collections.Generic;
+using Newtonsoft.Json;
+
+namespace PepperDash.Essentials.Core
+{
+    public class OccupancyAggregatorConfig
+    {
+        [JsonProperty("deviceKeys")] public List<string> DeviceKeys { get; set; }
+
+        public OccupancyAggregatorConfig()
+        {
+            DeviceKeys = new List<string>();
+        }
+    }
+}
\ No newline at end of file
diff --git a/essentials-framework/Essentials Core/PepperDashEssentialsBase/PepperDash_Essentials_Core.csproj b/essentials-framework/Essentials Core/PepperDashEssentialsBase/PepperDash_Essentials_Core.csproj
index 3919d331..36992629 100644
--- a/essentials-framework/Essentials Core/PepperDashEssentialsBase/PepperDash_Essentials_Core.csproj	
+++ b/essentials-framework/Essentials Core/PepperDashEssentialsBase/PepperDash_Essentials_Core.csproj	
@@ -234,6 +234,7 @@
     <Compile Include="Interfaces\ILogStringsWithLevel.cs" />
     <Compile Include="Occupancy\GlsOccupancySensorPropertiesConfig.cs" />
     <Compile Include="Occupancy\GlsOirOccupancySensorController.cs" />
+    <Compile Include="Occupancy\OccupancyAggregatorConfig.cs" />
     <Compile Include="Queues\ComsMessage.cs" />
     <Compile Include="Queues\ProcessStringMessage.cs" />
     <Compile Include="Queues\GenericQueue.cs" />