diff --git a/.changelog/14604.txt b/.changelog/14604.txt
new file mode 100644
index 0000000000..e35d479518
--- /dev/null
+++ b/.changelog/14604.txt
@@ -0,0 +1,3 @@
+```release-note:feature
+ui: Added support for central config merging
+```
diff --git a/ui/packages/consul-ui/app/adapters/proxy.js b/ui/packages/consul-ui/app/adapters/proxy.js
index 42eec4eb23..3da99214a8 100644
--- a/ui/packages/consul-ui/app/adapters/proxy.js
+++ b/ui/packages/consul-ui/app/adapters/proxy.js
@@ -6,7 +6,7 @@ export default class ProxyAdapter extends Adapter {
       throw new Error('You must specify an id');
     }
     return request`
-      GET /v1/catalog/connect/${id}?${{ dc }}
+      GET /v1/catalog/connect/${id}?${{ dc, ['merge-central-config']: null }}
       X-Request-ID: ${uri}
       X-Range: ${id}
 
diff --git a/ui/packages/consul-ui/app/adapters/service-instance.js b/ui/packages/consul-ui/app/adapters/service-instance.js
index 093d1f7912..6b5a3181a3 100644
--- a/ui/packages/consul-ui/app/adapters/service-instance.js
+++ b/ui/packages/consul-ui/app/adapters/service-instance.js
@@ -21,7 +21,7 @@ export default class ServiceInstanceAdapter extends Adapter {
     }
 
     return request`
-      GET /v1/health/service/${id}?${{ dc }}
+      GET /v1/health/service/${id}?${{ dc, ['merge-central-config']: null }}
       X-Request-ID: ${uri}
       X-Range: ${id}
 
diff --git a/ui/packages/consul-ui/app/adapters/service.js b/ui/packages/consul-ui/app/adapters/service.js
index ea69f0927e..30af669234 100644
--- a/ui/packages/consul-ui/app/adapters/service.js
+++ b/ui/packages/consul-ui/app/adapters/service.js
@@ -33,7 +33,7 @@ export default class ServiceAdapter extends Adapter {
       throw new Error('You must specify an id');
     }
     return request`
-      GET /v1/health/service/${id}?${{ dc }}
+      GET /v1/health/service/${id}?${{ dc, ['merge-central-config']: null }}
       X-Request-ID: ${uri}
 
       ${{
@@ -42,5 +42,5 @@ export default class ServiceAdapter extends Adapter {
         index,
       }}
     `;
-  }
+    }
 }
diff --git a/ui/packages/consul-ui/tests/acceptance/dc/services/instances/navigation.feature b/ui/packages/consul-ui/tests/acceptance/dc/services/instances/navigation.feature
index 6aa63c7bc4..9ea1aa1bfb 100644
--- a/ui/packages/consul-ui/tests/acceptance/dc/services/instances/navigation.feature
+++ b/ui/packages/consul-ui/tests/acceptance/dc/services/instances/navigation.feature
@@ -46,13 +46,13 @@ Feature: dc / services / instances / navigation
     Then the url should be /dc-1/services/service-0/instances
     Then I see 3 instance models
     When I click instance on the instances component
-    Then a GET request was made to "/v1/catalog/connect/service-0?dc=dc-1&ns=@namespace"
-    Then a GET request was made to "/v1/health/service/service-0-proxy?dc=dc-1&ns=@namespace"
+    Then a GET request was made to "/v1/catalog/connect/service-0?dc=dc-1&merge-central-config&ns=@namespace"
+    Then a GET request was made to "/v1/health/service/service-0-proxy?dc=dc-1&merge-central-config&ns=@namespace"
     Then the url should be /dc-1/services/service-0/instances/node-0/service-a/health-checks
     And I click "[data-test-back]"
     Then the url should be /dc-1/services/service-0/topology
     And I click instances on the tabs
     When I click instance on the instances component
-    Then a GET request was made to "/v1/catalog/connect/service-0?dc=dc-1&ns=@namespace"
-    Then a GET request was made to "/v1/health/service/service-0-proxy?dc=dc-1&ns=@namespace"
+    Then a GET request was made to "/v1/catalog/connect/service-0?dc=dc-1&merge-central-config&ns=@namespace"
+    Then a GET request was made to "/v1/health/service/service-0-proxy?dc=dc-1&merge-central-config&ns=@namespace"
     Then the url should be /dc-1/services/service-0/instances/node-0/service-a/health-checks
diff --git a/ui/packages/consul-ui/tests/integration/adapters/service-instance-test.js b/ui/packages/consul-ui/tests/integration/adapters/service-instance-test.js
index 5a9a9caa72..3e48573ecf 100644
--- a/ui/packages/consul-ui/tests/integration/adapters/service-instance-test.js
+++ b/ui/packages/consul-ui/tests/integration/adapters/service-instance-test.js
@@ -14,7 +14,7 @@ module('Integration | Adapter | service-instance', function (hooks) {
       const adapter = this.owner.lookup('adapter:service-instance');
       const client = this.owner.lookup('service:client/http');
       const request = client.requestParams.bind(client);
-      const expected = `GET /v1/health/service/${id}?dc=${dc}${
+      const expected = `GET /v1/health/service/${id}?dc=${dc}&merge-central-config${
         shouldHaveNspace(nspace) ? `&ns=${nspace}` : ``
       }`;
       let actual = adapter.requestForQueryRecord(request, {
diff --git a/ui/packages/consul-ui/tests/integration/adapters/service-test.js b/ui/packages/consul-ui/tests/integration/adapters/service-test.js
index 559f67f4de..e32893e833 100644
--- a/ui/packages/consul-ui/tests/integration/adapters/service-test.js
+++ b/ui/packages/consul-ui/tests/integration/adapters/service-test.js
@@ -42,7 +42,7 @@ module('Integration | Adapter | service', function (hooks) {
       const adapter = this.owner.lookup('adapter:service');
       const client = this.owner.lookup('service:client/http');
       const request = client.requestParams.bind(client);
-      const expected = `GET /v1/health/service/${id}?dc=${dc}${
+      const expected = `GET /v1/health/service/${id}?dc=${dc}&merge-central-config${
         shouldHaveNspace(nspace) ? `&ns=${nspace}` : ``
       }`;
       let actual = adapter.requestForQueryRecord(request, {