diff --git a/redfish-core/lib/fan.hpp b/redfish-core/lib/fan.hpp
new file mode 100644
index 0000000..3a9572f
--- /dev/null
+++ b/redfish-core/lib/fan.hpp
@@ -0,0 +1,159 @@
+#pragma once
+
+#include "app.hpp"
+#include "dbus_utility.hpp"
+#include "error_messages.hpp"
+#include "query.hpp"
+#include "registries/privilege_registry.hpp"
+#include "utils/chassis_utils.hpp"
+
+#include <boost/url/format.hpp>
+#include <sdbusplus/message/types.hpp>
+
+#include <functional>
+#include <memory>
+#include <optional>
+#include <string>
+#include <string_view>
+
+namespace redfish
+{
+constexpr std::array<std::string_view, 1> fanInterface = {
+    "xyz.openbmc_project.Inventory.Item.Fan"};
+
+inline void
+    updateFanList(const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
+                  const std::string& chassisId,
+                  const dbus::utility::MapperGetSubTreePathsResponse& fanPaths)
+{
+    nlohmann::json& fanList = asyncResp->res.jsonValue["Members"];
+    for (const std::string& fanPath : fanPaths)
+    {
+        std::string fanName =
+            sdbusplus::message::object_path(fanPath).filename();
+        if (fanName.empty())
+        {
+            continue;
+        }
+
+        nlohmann::json item = nlohmann::json::object();
+        item["@odata.id"] = boost::urls::format(
+            "/redfish/v1/Chassis/{}/ThermalSubsystem/Fans/{}", chassisId,
+            fanName);
+
+        fanList.emplace_back(std::move(item));
+    }
+    asyncResp->res.jsonValue["Members@odata.count"] = fanList.size();
+}
+
+inline void getFanPaths(
+    const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
+    const std::optional<std::string>& validChassisPath,
+    const std::function<void(const dbus::utility::MapperGetSubTreePathsResponse&
+                                 fanPaths)>& callback)
+{
+    sdbusplus::message::object_path endpointPath{*validChassisPath};
+    endpointPath /= "cooled_by";
+
+    dbus::utility::getAssociatedSubTreePaths(
+        endpointPath,
+        sdbusplus::message::object_path("/xyz/openbmc_project/inventory"), 0,
+        fanInterface,
+        [asyncResp, callback](
+            const boost::system::error_code& ec,
+            const dbus::utility::MapperGetSubTreePathsResponse& subtreePaths) {
+        if (ec)
+        {
+            if (ec.value() != EBADR)
+            {
+                BMCWEB_LOG_ERROR
+                    << "DBUS response error for getAssociatedSubTreePaths "
+                    << ec.value();
+                messages::internalError(asyncResp->res);
+            }
+            return;
+        }
+        callback(subtreePaths);
+        });
+}
+
+inline void doFanCollection(const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
+                            const std::string& chassisId,
+                            const std::optional<std::string>& validChassisPath)
+{
+    if (!validChassisPath)
+    {
+        messages::resourceNotFound(asyncResp->res, "Chassis", chassisId);
+        return;
+    }
+
+    asyncResp->res.addHeader(
+        boost::beast::http::field::link,
+        "</redfish/v1/JsonSchemas/FanCollection/FanCollection.json>; rel=describedby");
+    asyncResp->res.jsonValue["@odata.type"] = "#FanCollection.FanCollection";
+    asyncResp->res.jsonValue["@odata.id"] = boost::urls::format(
+        "/redfish/v1/Chassis/{}/ThermalSubsystem/Fans", chassisId);
+    asyncResp->res.jsonValue["Name"] = "Fan Collection";
+    asyncResp->res.jsonValue["Description"] =
+        "The collection of Fan resource instances " + chassisId;
+    asyncResp->res.jsonValue["Members"] = nlohmann::json::array();
+    asyncResp->res.jsonValue["Members@odata.count"] = 0;
+
+    getFanPaths(asyncResp, validChassisPath,
+                std::bind_front(updateFanList, asyncResp, chassisId));
+}
+
+inline void
+    handleFanCollectionHead(App& app, const crow::Request& req,
+                            const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
+                            const std::string& chassisId)
+{
+    if (!redfish::setUpRedfishRoute(app, req, asyncResp))
+    {
+        return;
+    }
+
+    redfish::chassis_utils::getValidChassisPath(
+        asyncResp, chassisId,
+        [asyncResp,
+         chassisId](const std::optional<std::string>& validChassisPath) {
+        if (!validChassisPath)
+        {
+            messages::resourceNotFound(asyncResp->res, "Chassis", chassisId);
+            return;
+        }
+        asyncResp->res.addHeader(
+            boost::beast::http::field::link,
+            "</redfish/v1/JsonSchemas/FanCollection/FanCollection.json>; rel=describedby");
+        });
+}
+
+inline void
+    handleFanCollectionGet(App& app, const crow::Request& req,
+                           const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
+                           const std::string& chassisId)
+{
+    if (!redfish::setUpRedfishRoute(app, req, asyncResp))
+    {
+        return;
+    }
+
+    redfish::chassis_utils::getValidChassisPath(
+        asyncResp, chassisId,
+        std::bind_front(doFanCollection, asyncResp, chassisId));
+}
+
+inline void requestRoutesFanCollection(App& app)
+{
+    BMCWEB_ROUTE(app, "/redfish/v1/Chassis/<str>/ThermalSubsystem/Fans/")
+        .privileges(redfish::privileges::headFanCollection)
+        .methods(boost::beast::http::verb::head)(
+            std::bind_front(handleFanCollectionHead, std::ref(app)));
+
+    BMCWEB_ROUTE(app, "/redfish/v1/Chassis/<str>/ThermalSubsystem/Fans/")
+        .privileges(redfish::privileges::getFanCollection)
+        .methods(boost::beast::http::verb::get)(
+            std::bind_front(handleFanCollectionGet, std::ref(app)));
+}
+
+} // namespace redfish
diff --git a/redfish-core/lib/thermal_subsystem.hpp b/redfish-core/lib/thermal_subsystem.hpp
index 6528a55..804b849 100644
--- a/redfish-core/lib/thermal_subsystem.hpp
+++ b/redfish-core/lib/thermal_subsystem.hpp
@@ -38,6 +38,9 @@
     asyncResp->res.jsonValue["@odata.id"] = boost::urls::format(
         "/redfish/v1/Chassis/{}/ThermalSubsystem", chassisId);
 
+    asyncResp->res.jsonValue["Fans"]["@odata.id"] = boost::urls::format(
+        "/redfish/v1/Chassis/{}/ThermalSubsystem/Fans", chassisId);
+
     asyncResp->res.jsonValue["Status"]["State"] = "Enabled";
     asyncResp->res.jsonValue["Status"]["Health"] = "OK";
 }