diff --git a/Public/css/output.css b/Public/css/output.css
index 6432e8f..6f47cc5 100644
--- a/Public/css/output.css
+++ b/Public/css/output.css
@@ -5360,9 +5360,6 @@
       }
     }
   }
-  .my-1 {
-    margin-block: calc(var(--spacing) * 1);
-  }
   .my-1\.5 {
     margin-block: calc(var(--spacing) * 1.5);
   }
@@ -5578,9 +5575,6 @@
   .ms-4 {
     margin-inline-start: calc(var(--spacing) * 4);
   }
-  .me-4 {
-    margin-inline-end: calc(var(--spacing) * 4);
-  }
   .modal-action {
     @layer daisyui.l1.l2.l3 {
       margin-top: calc(0.25rem * 6);
@@ -5620,15 +5614,6 @@
       }
     }
   }
-  .mt-1 {
-    margin-top: calc(var(--spacing) * 1);
-  }
-  .mt-1\.5 {
-    margin-top: calc(var(--spacing) * 1.5);
-  }
-  .mt-2 {
-    margin-top: calc(var(--spacing) * 2);
-  }
   .mt-4 {
     margin-top: calc(var(--spacing) * 4);
   }
@@ -7811,9 +7796,6 @@
   .px-4 {
     padding-inline: calc(var(--spacing) * 4);
   }
-  .py-1 {
-    padding-block: calc(var(--spacing) * 1);
-  }
   .py-1\.5 {
     padding-block: calc(var(--spacing) * 1.5);
   }
@@ -7840,9 +7822,6 @@
   .pe-2 {
     padding-inline-end: calc(var(--spacing) * 2);
   }
-  .pt-4 {
-    padding-top: calc(var(--spacing) * 4);
-  }
   .pt-6 {
     padding-top: calc(var(--spacing) * 6);
   }
@@ -7852,9 +7831,6 @@
   .pb-6 {
     padding-bottom: calc(var(--spacing) * 6);
   }
-  .align-baseline {
-    vertical-align: baseline;
-  }
   .file-input-lg {
     @layer daisyui.l1.l2 {
       --size: calc(var(--size-field, 0.25rem) * 12);
diff --git a/Sources/DatabaseClient/Errors.swift b/Sources/DatabaseClient/Errors.swift
index 6c0a0f4..0995825 100644
--- a/Sources/DatabaseClient/Errors.swift
+++ b/Sources/DatabaseClient/Errors.swift
@@ -9,4 +9,6 @@ public struct ValidationError: Error {
   }
 }
 
-public struct NotFoundError: Error {}
+public struct NotFoundError: Error {
+  public init() {}
+}
diff --git a/Sources/ManualDClient/Helpers.swift b/Sources/ManualDClient/Helpers.swift
index 89b8561..71f048e 100644
--- a/Sources/ManualDClient/Helpers.swift
+++ b/Sources/ManualDClient/Helpers.swift
@@ -4,6 +4,7 @@ import ManualDCore
 extension Room {
 
   var heatingLoadPerRegister: Double {
+
     heatingLoad / Double(registerCount)
   }
 
diff --git a/Sources/ManualDClient/Live.swift b/Sources/ManualDClient/Live.swift
index b323131..3b7768f 100644
--- a/Sources/ManualDClient/Live.swift
+++ b/Sources/ManualDClient/Live.swift
@@ -25,7 +25,7 @@ extension ManualDClient: DependencyKey {
         throw ManualDError(message: "Total Effective Length should be greater than 0.")
       }
 
-      let totalComponentLosses = request.componentPressureLosses.totalLosses
+      let totalComponentLosses = request.componentPressureLosses.totalComponentPressureLoss
       let availableStaticPressure = request.externalStaticPressure - totalComponentLosses
       let frictionRate = availableStaticPressure * 100.0 / Double(request.totalEffectiveLength)
       return .init(availableStaticPressure: availableStaticPressure, frictionRate: frictionRate)
diff --git a/Sources/ManualDClient/ManualDClient.swift b/Sources/ManualDClient/ManualDClient.swift
index 4a411d6..e7ee433 100644
--- a/Sources/ManualDClient/ManualDClient.swift
+++ b/Sources/ManualDClient/ManualDClient.swift
@@ -130,12 +130,12 @@ extension ManualDClient {
   public struct FrictionRateRequest: Codable, Equatable, Sendable {
 
     public let externalStaticPressure: Double
-    public let componentPressureLosses: ComponentPressureLosses
+    public let componentPressureLosses: [ComponentPressureLoss]
     public let totalEffectiveLength: Int
 
     public init(
       externalStaticPressure: Double,
-      componentPressureLosses: ComponentPressureLosses,
+      componentPressureLosses: [ComponentPressureLoss],
       totalEffectiveLength: Int
     ) {
       self.externalStaticPressure = externalStaticPressure
diff --git a/Sources/ManualDCore/Routes/ViewRoute.swift b/Sources/ManualDCore/Routes/ViewRoute.swift
index 659f6f7..dbbd3ec 100644
--- a/Sources/ManualDCore/Routes/ViewRoute.swift
+++ b/Sources/ManualDCore/Routes/ViewRoute.swift
@@ -707,6 +707,9 @@ extension SiteRoute.View.ProjectRoute {
         Method.post
         Body {
           FormData {
+            Optionally {
+              Field("id") { DuctSizing.RectangularDuct.ID.parser() }
+            }
             Field("register") { Int.parser() }
             Field("height") { Int.parser() }
           }
@@ -716,6 +719,7 @@ extension SiteRoute.View.ProjectRoute {
     }
 
     public struct RoomRectangularForm: Equatable, Sendable {
+      public let id: DuctSizing.RectangularDuct.ID?
       public let register: Int
       public let height: Int
     }
diff --git a/Sources/Styleguide/Buttons.swift b/Sources/Styleguide/Buttons.swift
index 98a2139..ca6b558 100644
--- a/Sources/Styleguide/Buttons.swift
+++ b/Sources/Styleguide/Buttons.swift
@@ -65,7 +65,7 @@ public struct EditButton: HTML, Sendable {
   }
 
   public var body: some HTML<HTMLTag.button> {
-    button(.class("btn btn-success btn-circle dark:text-white"), .type(type)) {
+    button(.class("btn btn-success btn-circle"), .type(type)) {
       div(.class("flex")) {
         if let title {
           span(.class("pe-2")) { title }
diff --git a/Sources/Styleguide/ResultView.swift b/Sources/Styleguide/ResultView.swift
new file mode 100644
index 0000000..a735228
--- /dev/null
+++ b/Sources/Styleguide/ResultView.swift
@@ -0,0 +1,78 @@
+import Elementary
+import Foundation
+
+public struct ResultView<
+  V: Sendable,
+  E: Error,
+  ValueView: HTML,
+  ErrorView: HTML
+>: HTML {
+
+  let onSuccess: @Sendable (V) -> ValueView
+  let onError: @Sendable (E) -> ErrorView
+  let result: Result<V, E>
+
+  public init(
+    result: Result<V, E>,
+    @HTMLBuilder onSuccess: @escaping @Sendable (V) -> ValueView,
+    @HTMLBuilder onError: @escaping @Sendable (E) -> ErrorView
+  ) {
+    self.result = result
+    self.onError = onError
+    self.onSuccess = onSuccess
+  }
+
+  public var body: some HTML {
+    switch result {
+    case .success(let value):
+      onSuccess(value)
+    case .failure(let error):
+      onError(error)
+    }
+  }
+}
+
+extension ResultView {
+
+  public init(
+    result: Result<V, E>,
+    @HTMLBuilder onSuccess: @escaping @Sendable (V) -> ValueView
+  ) where ErrorView == Styleguide.ErrorView<E> {
+    self.init(result: result, onSuccess: onSuccess) { error in
+      Styleguide.ErrorView(error: error)
+    }
+  }
+
+  public init(
+    catching: @escaping @Sendable () async throws(E) -> V,
+    @HTMLBuilder onSuccess: @escaping @Sendable (V) -> ValueView
+  ) async where ErrorView == Styleguide.ErrorView<E> {
+    await self.init(
+      result: .init(catching: catching),
+      onSuccess: onSuccess
+    ) { error in
+      Styleguide.ErrorView(error: error)
+    }
+  }
+}
+
+extension ResultView: Sendable where Error: Sendable, ValueView: Sendable, ErrorView: Sendable {}
+
+public struct ErrorView<E: Error>: HTML, Sendable where Error: Sendable {
+
+  let error: E
+
+  public init(error: E) {
+    self.error = error
+  }
+
+  public var body: some HTML<HTMLTag.div> {
+    div {
+      h1(.class("text-2xl font-bold text-error")) { "Oops: Error" }
+      p {
+        "\(error)"
+      }
+    }
+  }
+
+}
diff --git a/Sources/Styleguide/Tooltip.swift b/Sources/Styleguide/Tooltip.swift
index a47f50d..503c134 100644
--- a/Sources/Styleguide/Tooltip.swift
+++ b/Sources/Styleguide/Tooltip.swift
@@ -3,22 +3,35 @@ import Elementary
 public struct Tooltip<Inner: HTML & Sendable>: HTML, Sendable {
 
   let tooltip: String
+  let position: TooltipPosition
   let inner: Inner
 
   public init(
     _ tooltip: String,
+    position: TooltipPosition = .default,
     @HTMLBuilder inner: () -> Inner
   ) {
     self.tooltip = tooltip
+    self.position = position
     self.inner = inner()
   }
 
   public var body: some HTML<HTMLTag.div> {
     div(
-      .class("tooltip"),
+      .class("tooltip tooltip-\(position.rawValue)"),
       .data("tip", value: tooltip)
     ) {
       inner
     }
   }
 }
+
+public enum TooltipPosition: String, CaseIterable, Sendable {
+
+  public static let `default` = Self.left
+
+  case bottom
+  case left
+  case right
+  case top
+}
diff --git a/Sources/ViewController/Extensions/DatabaseExtensions.swift b/Sources/ViewController/Extensions/DatabaseExtensions.swift
index da8171b..1546f9a 100644
--- a/Sources/ViewController/Extensions/DatabaseExtensions.swift
+++ b/Sources/ViewController/Extensions/DatabaseExtensions.swift
@@ -1,5 +1,7 @@
 import DatabaseClient
+import Dependencies
 import Fluent
+import ManualDClient
 import ManualDCore
 import Vapor
 
@@ -24,6 +26,16 @@ extension DatabaseClient.Projects {
 
 extension DatabaseClient {
 
+  func calculateDuctSizes(projectID: Project.ID) async throws -> [DuctSizing.RoomContainer] {
+    @Dependency(\.manualD) var manualD
+
+    return try await manualD.calculate(
+      rooms: rooms.fetch(projectID),
+      designFrictionRateResult: designFrictionRate(projectID: projectID),
+      projectSHR: projects.getSensibleHeatRatio(projectID)
+    )
+  }
+
   func designFrictionRate(
     projectID: Project.ID
   ) async throws -> (EquipmentInfo, EffectiveLength.MaxContainer, Double)? {
diff --git a/Sources/ViewController/Live.swift b/Sources/ViewController/Live.swift
index 1a7e798..bebe018 100644
--- a/Sources/ViewController/Live.swift
+++ b/Sources/ViewController/Live.swift
@@ -353,30 +353,24 @@ extension SiteRoute.View.ProjectRoute.DuctSizingRoute {
 
     case .deleteRectangularSize(let roomID, let rectangularSizeID):
       let room = try await database.rooms.deleteRectangularSize(roomID, rectangularSizeID)
-      let container = try await manualD.calculate(
-        rooms: [room],
-        designFrictionRateResult: database.designFrictionRate(projectID: projectID),
-        projectSHR: database.projects.getSensibleHeatRatio(projectID)
-      ).first!
+      let container = try await database.calculateDuctSizes(projectID: projectID)
+        .filter({ $0.roomID == room.id })
+        .first!
       return DuctSizingView.RoomRow(projectID: projectID, room: container)
 
     case .roomRectangularForm(let roomID, let form):
-      let _ = try await database.rooms.update(
+      let room = try await database.rooms.update(
         roomID,
-        .init(rectangularSizes: [.init(register: form.register, height: form.height)])
+        .init(
+          rectangularSizes: [
+            .init(id: form.id ?? .init(), register: form.register, height: form.height)
+          ]
+        )
       )
-      // request.logger.debug("Got room rectangular form: \(roomID)")
-      //
-      // let containers = try await manualD.calculate(
-      //   rooms: [room],
-      //   designFrictionRateResult: database.designFrictionRate(projectID: projectID),
-      //   projectSHR: database.projects.getSensibleHeatRatio(projectID)
-      // )
-      // request.logger.debug("Room Containers: \(containers)")
-      // let container = containers.first(where: { $0.roomName == "\(room.name)-\(form.register)" })!
-      // request.logger.debug("Room Container: \(container)")
-      // return DuctSizingView.RoomRow(projectID: projectID, room: container)
-      return ProjectView(projectID: projectID, activeTab: .ductSizing, logger: request.logger)
+      let container = try await database.calculateDuctSizes(projectID: projectID)
+        .filter({ $0.roomID == room.id })
+        .first!
+      return DuctSizingView.RoomRow(projectID: projectID, room: container)
     }
   }
 }
diff --git a/Sources/ViewController/Views/ComponentLoss/ComponentLossesView.swift b/Sources/ViewController/Views/ComponentLoss/ComponentLossesView.swift
index 43714a9..3ec8627 100644
--- a/Sources/ViewController/Views/ComponentLoss/ComponentLossesView.swift
+++ b/Sources/ViewController/Views/ComponentLoss/ComponentLossesView.swift
@@ -31,10 +31,13 @@ struct ComponentPressureLossesView: HTML, Sendable {
             span(.class("text-sm italic")) { "Total" }
           }
         }
-        PlusButton()
-          .attributes(
-            .showModal(id: ComponentLossForm.id())
-          )
+        Tooltip("Add Component Loss") {
+          PlusButton()
+            .attributes(
+              .class("btn-ghost text-2xl"),
+              .showModal(id: ComponentLossForm.id())
+            )
+        }
       }
 
       table(.class("table table-zebra")) {
@@ -65,24 +68,28 @@ struct ComponentPressureLossesView: HTML, Sendable {
         td { Number(row.value) }
         td {
           div(.class("flex join items-end justify-end mx-auto")) {
-            TrashButton()
-              .attributes(
-                .class("join-item"),
-                .hx.delete(
-                  route: .project(
-                    .detail(row.projectID, .componentLoss(.delete(row.id)))
-                  )
-                ),
-                .hx.target("body"),
-                .hx.swap(.outerHTML),
-                .hx.confirm("Are your sure?")
+            Tooltip("Delete", position: .bottom) {
+              TrashButton()
+                .attributes(
+                  .class("join-item btn-ghost"),
+                  .hx.delete(
+                    route: .project(
+                      .detail(row.projectID, .componentLoss(.delete(row.id)))
+                    )
+                  ),
+                  .hx.target("body"),
+                  .hx.swap(.outerHTML),
+                  .hx.confirm("Are your sure?")
 
-              )
-            EditButton()
-              .attributes(
-                .class("join-item"),
-                .showModal(id: ComponentLossForm.id(row))
-              )
+                )
+            }
+            Tooltip("Edit", position: .bottom) {
+              EditButton()
+                .attributes(
+                  .class("join-item btn-ghost"),
+                  .showModal(id: ComponentLossForm.id(row))
+                )
+            }
           }
 
           ComponentLossForm(dismiss: true, projectID: row.projectID, componentLoss: row)
diff --git a/Sources/ViewController/Views/DuctSizing/DuctSizingView.swift b/Sources/ViewController/Views/DuctSizing/DuctSizingView.swift
index 8352d44..b1ff561 100644
--- a/Sources/ViewController/Views/DuctSizing/DuctSizingView.swift
+++ b/Sources/ViewController/Views/DuctSizing/DuctSizingView.swift
@@ -7,7 +7,9 @@ import Styleguide
 
 struct DuctSizingView: HTML, Sendable {
 
-  let projectID: Project.ID
+  @Environment(ProjectViewValue.$projectID) var projectID
+
+  // let projectID: Project.ID
   let rooms: [DuctSizing.RoomContainer]
 
   var body: some HTML {
diff --git a/Sources/ViewController/Views/DuctSizing/RectangularSizeForm.swift b/Sources/ViewController/Views/DuctSizing/RectangularSizeForm.swift
index d3e8ef7..4cae986 100644
--- a/Sources/ViewController/Views/DuctSizing/RectangularSizeForm.swift
+++ b/Sources/ViewController/Views/DuctSizing/RectangularSizeForm.swift
@@ -74,7 +74,7 @@ struct RectangularSizeForm: HTML, Sendable {
       form(
         .class("space-y-4"),
         .hx.post(route),
-        .hx.target("body"),
+        .hx.target("closest tr"),
         .hx.swap(.outerHTML)
       ) {
         input(.class("hidden"), .name("register"), .value(register))
diff --git a/Sources/ViewController/Views/EffectiveLength/EffectiveLengthForm.swift b/Sources/ViewController/Views/EffectiveLength/EffectiveLengthForm.swift
index d8b1037..7e310ce 100644
--- a/Sources/ViewController/Views/EffectiveLength/EffectiveLengthForm.swift
+++ b/Sources/ViewController/Views/EffectiveLength/EffectiveLengthForm.swift
@@ -3,16 +3,8 @@ import ElementaryHTMX
 import ManualDCore
 import Styleguide
 
-// TODO: May need a multi-step form were the the effective length type is
-//       determined before groups selections are made in order to use the
-//       appropriate select field values when the type is supply vs. return.
-//       Currently when the select field is changed it doesn't change the group
-//       I can get it to add a new one.
-
 // TODO: Add back buttons / capability??
 
-// TODO: Add patch / update capability
-
 struct EffectiveLengthForm: HTML, Sendable {
 
   static func id(_ equivalentLength: EffectiveLength?) -> String {
diff --git a/Sources/ViewController/Views/EffectiveLength/EffectiveLengthsView.swift b/Sources/ViewController/Views/EffectiveLength/EffectiveLengthsView.swift
index f89f3ae..7266092 100644
--- a/Sources/ViewController/Views/EffectiveLength/EffectiveLengthsView.swift
+++ b/Sources/ViewController/Views/EffectiveLength/EffectiveLengthsView.swift
@@ -7,7 +7,9 @@ import Styleguide
 
 struct EffectiveLengthsView: HTML, Sendable {
 
-  let projectID: Project.ID
+  @Environment(ProjectViewValue.$projectID) var projectID
+
+  // let projectID: Project.ID
   let effectiveLengths: [EffectiveLength]
 
   var supplies: [EffectiveLength] {
diff --git a/Sources/ViewController/Views/EquipmentInfo/EquipmentInfoView.swift b/Sources/ViewController/Views/EquipmentInfo/EquipmentInfoView.swift
index 3fc1073..68405a5 100644
--- a/Sources/ViewController/Views/EquipmentInfo/EquipmentInfoView.swift
+++ b/Sources/ViewController/Views/EquipmentInfo/EquipmentInfoView.swift
@@ -15,10 +15,13 @@ struct EquipmentInfoView: HTML, Sendable {
       Row {
         h1(.class("text-2xl font-bold")) { "Equipment Info" }
 
-        EditButton()
-          .attributes(
-            .on(.click, "\(EquipmentInfoForm.id).showModal()")
-          )
+        Tooltip("Edit equipment info") {
+          EditButton()
+            .attributes(
+              .class("btn-ghost"),
+              .showModal(id: EquipmentInfoForm.id)
+            )
+        }
       }
 
       if let equipmentInfo {
diff --git a/Sources/ViewController/Views/FrictionRate/FrictionRateView.swift b/Sources/ViewController/Views/FrictionRate/FrictionRateView.swift
index 4c0b02e..48f0d66 100644
--- a/Sources/ViewController/Views/FrictionRate/FrictionRateView.swift
+++ b/Sources/ViewController/Views/FrictionRate/FrictionRateView.swift
@@ -1,4 +1,5 @@
 import Elementary
+import ManualDClient
 import ManualDCore
 import Styleguide
 
@@ -6,23 +7,20 @@ import Styleguide
 
 struct FrictionRateView: HTML, Sendable {
 
+  @Environment(ProjectViewValue.$projectID) var projectID
+
   let equipmentInfo: EquipmentInfo?
   let componentLosses: [ComponentPressureLoss]
   let equivalentLengths: EffectiveLength.MaxContainer
-  let projectID: Project.ID
+  // let projectID: Project.ID
+  let frictionRateResponse: ManualDClient.FrictionRateResponse?
 
   var availableStaticPressure: Double? {
-    guard let staticPressure = equipmentInfo?.staticPressure else {
-      return nil
-    }
-    return staticPressure - componentLosses.totalComponentPressureLoss
+    frictionRateResponse?.availableStaticPressure
   }
 
   var frictionRateDesignValue: Double? {
-    guard let availableStaticPressure, let tel = equivalentLengths.total else {
-      return nil
-    }
-    return (((availableStaticPressure * 100) / tel) * 100) / 100
+    frictionRateResponse?.frictionRate
   }
 
   var badgeColor: String {
diff --git a/Sources/ViewController/Views/Project/ProjectView.swift b/Sources/ViewController/Views/Project/ProjectView.swift
index 083f9e6..ee00464 100644
--- a/Sources/ViewController/Views/Project/ProjectView.swift
+++ b/Sources/ViewController/Views/Project/ProjectView.swift
@@ -7,6 +7,10 @@ import ManualDClient
 import ManualDCore
 import Styleguide
 
+enum ProjectViewValue {
+  @TaskLocal static var projectID = Project.ID(0)
+}
+
 struct ProjectView: HTML, Sendable {
   @Dependency(\.database) var database
   @Dependency(\.manualD) var manualD
@@ -34,50 +38,65 @@ struct ProjectView: HTML, Sendable {
         div(.class("drawer-content p-4")) {
           label(
             .for("my-drawer-1"),
-            .class("btn btn-square btn-ghost drawer-button size-7")
+            .class("btn btn-square btn-ghost drawer-button size-7 pb-6")
           ) {
             SVG(.sidebarToggle)
           }
           switch self.activeTab {
           case .project:
-            if let project = try await database.projects.get(projectID) {
-              ProjectDetail(project: project)
-            } else {
-              div {
-                "FIX ME!"
+            await resultView(projectID) {
+              guard let project = try await database.projects.get(projectID) else {
+                throw NotFoundError()
               }
+              return project
+            } onSuccess: { project in
+              ProjectDetail(project: project)
             }
           case .rooms:
-            try await RoomsView(
-              projectID: projectID,
-              rooms: database.rooms.fetch(projectID),
-              sensibleHeatRatio: database.projects.getSensibleHeatRatio(projectID)
-            )
+            await resultView(projectID) {
+              try await (
+                database.rooms.fetch(projectID),
+                database.projects.getSensibleHeatRatio(projectID)
+              )
+            } onSuccess: { (rooms, shr) in
+              RoomsView(rooms: rooms, sensibleHeatRatio: shr)
+            }
 
           case .equivalentLength:
-            try await EffectiveLengthsView(
-              projectID: projectID,
-              effectiveLengths: database.effectiveLength.fetch(projectID)
-            )
+            await resultView(projectID) {
+              try await database.effectiveLength.fetch(projectID)
+            } onSuccess: {
+              EffectiveLengthsView(effectiveLengths: $0)
+            }
           case .frictionRate:
-            try await FrictionRateView(
-              equipmentInfo: database.equipment.fetch(projectID),
-              componentLosses: database.componentLoss.fetch(projectID),
-              equivalentLengths: database.effectiveLength.fetchMax(projectID),
-              projectID: projectID
-            )
-          case .ductSizing:
-            try await DuctSizingView(
-              projectID: projectID,
-              rooms: manualD.calculate(
-                rooms: database.rooms.fetch(projectID),
-                designFrictionRateResult: database.designFrictionRate(projectID: projectID),
-                projectSHR: database.projects.getSensibleHeatRatio(projectID),
-                logger: logger
-              )
-            )
-          // div { "FIX ME!" }
 
+            await resultView(projectID) {
+
+              let equipmentInfo = try await database.equipment.fetch(projectID)
+              let componentLosses = try await database.componentLoss.fetch(projectID)
+              let equivalentLengths = try await database.effectiveLength.fetchMax(projectID)
+              let frictionRateResponse = try await manualD.frictionRate(
+                equipmentInfo: equipmentInfo,
+                componentLosses: componentLosses,
+                effectiveLength: equivalentLengths
+              )
+              return (
+                equipmentInfo, componentLosses, equivalentLengths, frictionRateResponse
+              )
+            } onSuccess: {
+              FrictionRateView(
+                equipmentInfo: $0.0,
+                componentLosses: $0.1,
+                equivalentLengths: $0.2,
+                frictionRateResponse: $0.3
+              )
+            }
+          case .ductSizing:
+            await resultView(projectID) {
+              try await database.calculateDuctSizes(projectID: projectID)
+            } onSuccess: {
+              DuctSizingView(rooms: $0)
+            }
           }
         }
 
@@ -89,8 +108,77 @@ struct ProjectView: HTML, Sendable {
       }
     }
   }
+
+  func resultView<V: Sendable, E: Error, ValueView: HTML>(
+    _ projectID: Project.ID,
+    catching: @escaping @Sendable () async throws(E) -> V,
+    onSuccess: @escaping @Sendable (V) -> ValueView
+  ) async -> ResultView<V, E, _ModifiedTaskLocal<Project.ID, ValueView>, ErrorView<E>>
+  where
+    ValueView: Sendable, E: Sendable
+  {
+    await .init(
+      result: .init(catching: catching),
+      onSuccess: { result in
+        onSuccess(result)
+          .environment(ProjectViewValue.$projectID, projectID)
+      }
+    )
+  }
 }
 
+// extension SiteRoute.View.ProjectRoute.DetailRoute.Tab {
+//
+//   func view(projectID: Project.ID) async throws -> AnySendableHTML {
+//     @Dependency(\.database) var database
+//     @Dependency(\.manualD) var manualD
+//
+//     switch self {
+//     case .project:
+//       if let project = try await database.projects.get(projectID) {
+//         return ProjectDetail(project: project)
+//       } else {
+//         return div {
+//           "FIX ME!"
+//         }
+//       }
+//     case .rooms:
+//       return try await RoomsView(
+//         projectID: projectID,
+//         rooms: database.rooms.fetch(projectID),
+//         sensibleHeatRatio: database.projects.getSensibleHeatRatio(projectID)
+//       )
+//
+//     case .equivalentLength:
+//       return try await EffectiveLengthsView(
+//         projectID: projectID,
+//         effectiveLengths: database.effectiveLength.fetch(projectID)
+//       )
+//     case .frictionRate:
+//       let equipmentInfo = try await database.equipment.fetch(projectID)
+//       let componentLosses = try await database.componentLoss.fetch(projectID)
+//       let equivalentLengths = try await database.effectiveLength.fetchMax(projectID)
+//
+//       return try await FrictionRateView(
+//         equipmentInfo: equipmentInfo,
+//         componentLosses: componentLosses,
+//         equivalentLengths: equivalentLengths,
+//         projectID: projectID,
+//         frictionRateResponse: manualD.frictionRate(
+//           equipmentInfo: equipmentInfo,
+//           componentLosses: componentLosses,
+//           effectiveLength: equivalentLengths
+//         )
+//       )
+//     case .ductSizing:
+//       return try await DuctSizingView(
+//         projectID: projectID,
+//         rooms: database.calculateDuctSizes(projectID: projectID)
+//       )
+//     }
+//   }
+// }
+
 extension ProjectView {
 
   struct Sidebar: HTML {
@@ -261,3 +349,27 @@ extension ProjectView {
     }
   }
 }
+
+extension ManualDClient {
+
+  func frictionRate(
+    equipmentInfo: EquipmentInfo?,
+    componentLosses: [ComponentPressureLoss],
+    effectiveLength: EffectiveLength.MaxContainer
+  ) async throws -> FrictionRateResponse? {
+    guard let staticPressure = equipmentInfo?.staticPressure else {
+      return nil
+    }
+    guard let totalEquivalentLength = effectiveLength.total else {
+      return nil
+    }
+    return try await self.frictionRate(
+      .init(
+        externalStaticPressure: staticPressure,
+        componentPressureLosses: componentLosses,
+        totalEffectiveLength: Int(totalEquivalentLength)
+      )
+    )
+  }
+
+}
diff --git a/Sources/ViewController/Views/Rooms/RoomsView.swift b/Sources/ViewController/Views/Rooms/RoomsView.swift
index 76200d7..0d33391 100644
--- a/Sources/ViewController/Views/Rooms/RoomsView.swift
+++ b/Sources/ViewController/Views/Rooms/RoomsView.swift
@@ -5,40 +5,36 @@ import Foundation
 import ManualDCore
 import Styleguide
 
-// TODO: Calculate rooms sensible based on project wide SHR.
-
 struct RoomsView: HTML, Sendable {
-  let projectID: Project.ID
+  @Environment(ProjectViewValue.$projectID) var projectID
+  // let projectID: Project.ID
   let rooms: [Room]
   let sensibleHeatRatio: Double?
 
   var body: some HTML {
     div {
-      Row {
-        h1(.class("text-2xl font-bold")) { "Room Loads" }
-        // div(
-        //   .class("tooltip tooltip-left"),
-        //   .data("tip", value: "Add room")
-        // ) {
-        //   div(.class("flex me-4")) {
-        //     PlusButton()
-        //       .attributes(.showModal(id: RoomForm.id()))
-        //   }
-        // }
-      }
-      .attributes(.class("pb-6"))
+      h1(.class("text-2xl font-bold pb-6")) { "Room Loads" }
 
       div(.class("border rounded-lg mb-6")) {
         Row {
-          div(.class("space-x-6 my-2")) {
-            Label("Sensible Heat Ratio")
-            if let sensibleHeatRatio {
-              Number(sensibleHeatRatio)
+          div {
+            div(.class("space-x-6 my-2 items-center")) {
+              Label("Sensible Heat Ratio")
+                .attributes(.class("my-auto"))
+              if let sensibleHeatRatio {
+                Number(sensibleHeatRatio)
+                  .attributes(.class("badge badge-outline"))
+              }
+            }
+            p(.class("text-sm italic")) {
+              "Project wide sensible heat ratio"
             }
           }
 
-          EditButton()
-            .attributes(.showModal(id: SHRForm.id))
+          Tooltip("Edit SHR") {
+            EditButton()
+              .attributes(.showModal(id: SHRForm.id))
+          }
         }
         .attributes(.class("m-4"))
 
@@ -134,7 +130,7 @@ struct RoomsView: HTML, Sendable {
         td {
           div(.class("flex justify-end")) {
             div(.class("join")) {
-              Tooltip("Delete room") {
+              Tooltip("Delete room", position: .bottom) {
                 TrashButton()
                   .attributes(
                     .class("join-item btn-ghost"),
@@ -144,16 +140,14 @@ struct RoomsView: HTML, Sendable {
                     .hx.confirm("Are you sure?")
                   )
               }
-              .attributes(.class("tooltip-bottom"))
 
-              Tooltip("Edit room") {
+              Tooltip("Edit room", position: .bottom) {
                 EditButton()
                   .attributes(
                     .class("join-item btn-ghost"),
                     .showModal(id: RoomForm.id(room))
                   )
               }
-              .attributes(.class("tooltip-bottom"))
             }
           }
           RoomForm(