diff --git a/src/VCRC/Abstract/ITwoStageVCRC.cs b/src/VCRC/Abstract/ITwoStageVCRC.cs
index 1f3ef2f..8377a4c 100644
--- a/src/VCRC/Abstract/ITwoStageVCRC.cs
+++ b/src/VCRC/Abstract/ITwoStageVCRC.cs
@@ -8,10 +8,10 @@ public interface ITwoStageVCRC : IVCRC
     /// <summary>
     ///     Absolute intermediate pressure.
     /// </summary>
-    public Pressure IntermediatePressure { get; }
+    Pressure IntermediatePressure { get; }
 
     /// <summary>
     ///     Specific mass flow rate of the intermediate circuit.
     /// </summary>
-    public Ratio IntermediateSpecificMassFlow { get; }
+    Ratio IntermediateSpecificMassFlow { get; }
 }
diff --git a/src/VCRC/Abstract/IVCRC.cs b/src/VCRC/Abstract/IVCRC.cs
index 3678022..93bc929 100644
--- a/src/VCRC/Abstract/IVCRC.cs
+++ b/src/VCRC/Abstract/IVCRC.cs
@@ -8,70 +8,70 @@ public interface IVCRC : IEntropyAnalysable
     /// <summary>
     ///     Evaporator.
     /// </summary>
-    public IEvaporator Evaporator { get; }
+    IEvaporator Evaporator { get; }
 
     /// <summary>
     ///     Compressor.
     /// </summary>
-    public ICompressor Compressor { get; }
+    ICompressor Compressor { get; }
 
     /// <summary>
     ///     Heat releaser (condenser for subcritical VCRC or gas cooler for transcritical VCRC).
     /// </summary>
-    public IHeatReleaser HeatReleaser { get; }
+    IHeatReleaser HeatReleaser { get; }
 
     /// <summary>
     ///     Condenser (not <c>null</c> for subcritical VCRC).
     /// </summary>
-    public ICondenser? Condenser { get; }
+    ICondenser? Condenser { get; }
 
     /// <summary>
     ///     Gas cooler (not <c>null</c> for transcritical VCRC).
     /// </summary>
-    public IHeatReleaser? GasCooler { get; }
+    IHeatReleaser? GasCooler { get; }
 
     /// <summary>
     ///     <c>true</c> if VCRC is transcritical, <c>false</c> if VCRC is subcritical.
     /// </summary>
-    public bool IsTranscritical { get; }
+    bool IsTranscritical { get; }
 
     /// <summary>
     ///     Specific mass flow rate of the evaporator.
     /// </summary>
-    public Ratio EvaporatorSpecificMassFlow { get; }
+    Ratio EvaporatorSpecificMassFlow { get; }
 
     /// <summary>
     ///     Specific mass flow rate of the condenser or gas cooler.
     /// </summary>
-    public Ratio HeatReleaserSpecificMassFlow { get; }
+    Ratio HeatReleaserSpecificMassFlow { get; }
 
     /// <summary>
     ///     Specific work of isentropic compression.
     /// </summary>
-    public SpecificEnergy IsentropicSpecificWork { get; }
+    SpecificEnergy IsentropicSpecificWork { get; }
 
     /// <summary>
     ///     Specific work of real compression.
     /// </summary>
-    public SpecificEnergy SpecificWork { get; }
+    SpecificEnergy SpecificWork { get; }
 
     /// <summary>
     ///     Specific cooling capacity of the cycle.
     /// </summary>
-    public SpecificEnergy SpecificCoolingCapacity { get; }
+    SpecificEnergy SpecificCoolingCapacity { get; }
 
     /// <summary>
     ///     Specific heating capacity of the cycle.
     /// </summary>
-    public SpecificEnergy SpecificHeatingCapacity { get; }
+    SpecificEnergy SpecificHeatingCapacity { get; }
 
     /// <summary>
     ///     Energy efficiency ratio, aka cooling coefficient.
     /// </summary>
-    public double EER { get; }
+    double EER { get; }
 
     /// <summary>
     ///     Coefficient of performance, aka heating coefficient.
     /// </summary>
-    public double COP { get; }
+    double COP { get; }
 }
diff --git a/src/VCRC/EntropyAnalysis/EntropyAnalysisExtensions.cs b/src/VCRC/EntropyAnalysis/EntropyAnalysisExtensions.cs
index 7cb3cc9..708a535 100644
--- a/src/VCRC/EntropyAnalysis/EntropyAnalysisExtensions.cs
+++ b/src/VCRC/EntropyAnalysis/EntropyAnalysisExtensions.cs
@@ -8,41 +8,48 @@ public static class EntropyAnalysisExtensions
     /// <summary>
     ///     Performs VCRC entropy analysis over a range of indoor and outdoor temperatures.
     /// </summary>
-    /// <param name="cycles">List of VCRCs.</param>
-    /// <param name="indoor">List of indoor temperatures.</param>
-    /// <param name="outdoor">List of outdoor temperatures.</param>
+    /// <param name="cycles">Enumerable of VCRCs.</param>
+    /// <param name="indoor">Enumerable of indoor temperatures.</param>
+    /// <param name="outdoor">Enumerable of outdoor temperatures.</param>
     /// <returns>Result of the VCRC entropy analysis in range of temperatures.</returns>
-    /// <exception cref="ArgumentException">The lists should have the same length!</exception>
+    /// <exception cref="ArgumentException">Inputs should have the same length!</exception>
     public static IEntropyAnalysisResult EntropyAnalysis(
-        this IList<IEntropyAnalysable> cycles,
-        IList<Temperature> indoor,
-        IList<Temperature> outdoor
-    ) =>
-        cycles.Count == indoor.Count && indoor.Count == outdoor.Count
-            ? cycles
-                .Select((cycle, i) => cycle.EntropyAnalysis(indoor[i], outdoor[i]))
-                .ToList()
+        this IEnumerable<IEntropyAnalysable> cycles,
+        IEnumerable<Temperature> indoor,
+        IEnumerable<Temperature> outdoor
+    )
+    {
+        var cyclesList = cycles.ToList();
+        var indoorList = indoor.ToList();
+        var outdoorList = outdoor.ToList();
+        return cyclesList.Count == indoorList.Count && indoorList.Count == outdoorList.Count
+            ? cyclesList
+                .Select((cycle, i) => cycle.EntropyAnalysis(indoorList[i], outdoorList[i]))
                 .Average()
-            : throw new ArgumentException("The lists should have the same length!");
+            : throw new ArgumentException("Inputs should have the same length!");
+    }
 
     /// <summary>
-    ///     Computes the average of a list of the entropy analysis results.
+    ///     Computes the average of the entropy analysis results.
     /// </summary>
-    /// <param name="results">List of the entropy analysis results.</param>
+    /// <param name="results">Enumerable of the entropy analysis results.</param>
     /// <returns>The average.</returns>
-    public static IEntropyAnalysisResult Average(this IList<IEntropyAnalysisResult> results) =>
-        new EntropyAnalysisResult(
-            results.Select(i => i.ThermodynamicPerfection.Percent).Average().Percent(),
-            results.Select(i => i.MinSpecificWorkRatio.Percent).Average().Percent(),
-            results.Select(i => i.CompressorEnergyLossRatio.Percent).Average().Percent(),
-            results.Select(i => i.CondenserEnergyLossRatio.Percent).Average().Percent(),
-            results.Select(i => i.GasCoolerEnergyLossRatio.Percent).Average().Percent(),
-            results.Select(i => i.ExpansionValvesEnergyLossRatio.Percent).Average().Percent(),
-            results.Select(i => i.EjectorEnergyLossRatio.Percent).Average().Percent(),
-            results.Select(i => i.EvaporatorEnergyLossRatio.Percent).Average().Percent(),
-            results.Select(i => i.RecuperatorEnergyLossRatio.Percent).Average().Percent(),
-            results.Select(i => i.EconomizerEnergyLossRatio.Percent).Average().Percent(),
-            results.Select(i => i.MixingEnergyLossRatio.Percent).Average().Percent(),
-            results.Select(i => i.AnalysisRelativeError.Percent).Average().Percent()
+    public static IEntropyAnalysisResult Average(this IEnumerable<IEntropyAnalysisResult> results)
+    {
+        var resultsList = results.ToList();
+        return new EntropyAnalysisResult(
+            resultsList.Select(i => i.ThermodynamicPerfection.Percent).Average().Percent(),
+            resultsList.Select(i => i.MinSpecificWorkRatio.Percent).Average().Percent(),
+            resultsList.Select(i => i.CompressorEnergyLossRatio.Percent).Average().Percent(),
+            resultsList.Select(i => i.CondenserEnergyLossRatio.Percent).Average().Percent(),
+            resultsList.Select(i => i.GasCoolerEnergyLossRatio.Percent).Average().Percent(),
+            resultsList.Select(i => i.ExpansionValvesEnergyLossRatio.Percent).Average().Percent(),
+            resultsList.Select(i => i.EjectorEnergyLossRatio.Percent).Average().Percent(),
+            resultsList.Select(i => i.EvaporatorEnergyLossRatio.Percent).Average().Percent(),
+            resultsList.Select(i => i.RecuperatorEnergyLossRatio.Percent).Average().Percent(),
+            resultsList.Select(i => i.EconomizerEnergyLossRatio.Percent).Average().Percent(),
+            resultsList.Select(i => i.MixingEnergyLossRatio.Percent).Average().Percent(),
+            resultsList.Select(i => i.AnalysisRelativeError.Percent).Average().Percent()
         );
+    }
 }
diff --git a/tests/VCRC.Tests/EntropyAnalysis/EntropyAnalysisExtensionsTests.cs b/tests/VCRC.Tests/EntropyAnalysis/EntropyAnalysisExtensionsTests.cs
index d49f551..76a585a 100644
--- a/tests/VCRC.Tests/EntropyAnalysis/EntropyAnalysisExtensionsTests.cs
+++ b/tests/VCRC.Tests/EntropyAnalysis/EntropyAnalysisExtensionsTests.cs
@@ -27,7 +27,7 @@ public void EntropyAnalysisInRange_ListsOfTemperaturesWithDifferentCount_ThrowsA
         action
             .Should()
             .Throw<ArgumentException>()
-            .WithMessage("The lists should have the same length!");
+            .WithMessage("Inputs should have the same length!");
     }
 
     [Fact]