diff --git a/.github/workflows/pr-build-env.yml b/.github/workflows/pr-build-env.yml
new file mode 100644
index 00000000..a38d153e
--- /dev/null
+++ b/.github/workflows/pr-build-env.yml
@@ -0,0 +1,81 @@
+name: PR build with env
+
+on:
+  workflow_call:
+    inputs:
+      env:
+        description: 'The environment to build for'
+        required: true
+        type: string
+      is_esp32:
+        description: 'Whether the build is for ESP32 based firmware'
+        required: false
+        type: boolean
+        default: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code from repo
+        uses: actions/checkout@v4
+
+      - name: Cache Python dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('platformio.ini') }}
+
+      - name: Cache PlatformIO dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/.pio/libdeps
+          key: ${{ runner.os }}-pio-${{ hashFiles('platformio.ini') }}
+
+      - name: Set up Python 3.9
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.9
+
+      - name: Inject secrets into ini file
+        run: |
+          sed -i 's/NO_AMS2MQTT_PRICE_KEY/AMS2MQTT_PRICE_KEY="${{secrets.AMS2MQTT_PRICE_KEY}}"/g' platformio.ini
+          sed -i 's/NO_AMS2MQTT_PRICE_AUTHENTICATION/AMS2MQTT_PRICE_AUTHENTICATION="${{secrets.AMS2MQTT_PRICE_AUTHENTICATION}}"/g' platformio.ini
+          sed -i 's/NO_AMS2MQTT_SC_KEY/AMS2MQTT_SC_KEY=\\"${{secrets.AMS2MQTT_SC_KEY}}\\"/g' platformio.ini
+          sed -i 's/NO_ENERGY_SPEEDOMETER_USER/ENERGY_SPEEDOMETER_USER=\\"${{secrets.ENERGY_SPEEDOMETER_USER}}\\"/g' platformio.ini
+          sed -i 's/NO_ENERGY_SPEEDOMETER_PASS/ENERGY_SPEEDOMETER_PASS=\\"${{secrets.ENERGY_SPEEDOMETER_PASS}}\\"/g' platformio.ini
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -U platformio css_html_js_minify
+
+      - name: Set up node
+        uses: actions/setup-node@v4
+        with:
+          node-version: '19.x'
+
+      - name: Build with node
+        run: |
+          cd lib/SvelteUi/app
+          npm ci
+          npm run build
+          cd -
+        env:
+          CI: false
+
+      - name: PlatformIO lib install
+        run: pio lib install
+
+      - name: Build firmware
+        run: pio run -e ${{ inputs.env }}
+
+      - name: Create zip file
+        run: /bin/sh scripts/${{ inputs.env }}/mkzip.sh
+
+      - name: Upload zip as artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ inputs.env }}
+          path: ${{ inputs.env }}.zip
+          retention-days: 7
diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
new file mode 100644
index 00000000..5cf8b988
--- /dev/null
+++ b/.github/workflows/pull-request.yml
@@ -0,0 +1,99 @@
+name: Pull Request build
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  build-esp32s2:
+    uses: ./.github/workflows/pr-build-env.yml
+    secrets: inherit
+    with:
+      env: esp32s2
+      is_esp32: true
+
+  build-esp32s3:
+    uses: ./.github/workflows/pr-build-env.yml
+    secrets: inherit
+    with:
+      env: esp32s3
+      is_esp32: true
+
+  build-esp32c3:
+    uses: ./.github/workflows/pr-build-env.yml
+    secrets: inherit
+    with:
+      env: esp32c3
+      is_esp32: true
+
+  build-esp32:
+    uses: ./.github/workflows/pr-build-env.yml
+    secrets: inherit
+    with:
+      env: esp32
+      is_esp32: true
+
+  build-esp32solo:
+    uses: ./.github/workflows/pr-build-env.yml
+    secrets: inherit
+    with:
+      env: esp32solo
+      is_esp32: true
+
+  build-esp8266:
+    uses: ./.github/workflows/pr-build-env.yml
+    secrets: inherit
+    with:
+      env: esp8266
+      is_esp32: false
+
+  comment:
+    needs:
+      - build-esp32s2
+      - build-esp32s3
+      - build-esp32c3
+      - build-esp32
+      - build-esp32solo
+      - build-esp8266
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+
+      - name: Post PR comment with download links
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const { owner, repo } = context.repo;
+            const prNumber = context.payload.pull_request.number;
+            const runId = context.runId;
+            const runUrl = `https://github.com/${owner}/${repo}/actions/runs/${runId}`;
+
+            const envs = ['esp32s2', 'esp32s3', 'esp32c3', 'esp32', 'esp32solo', 'esp8266'];
+            const lines = envs.map(env =>
+              `- **${env}**: [${env}.zip](${runUrl}/artifacts) (see artifacts on the [workflow run](${runUrl}))`
+            );
+
+            const body = [
+              '## 🔧 PR Build Artifacts',
+              '',
+              'All environments built successfully. Download the zip files from the workflow run artifacts:',
+              '',
+              ...lines,
+              '',
+              `> [View all artifacts on the workflow run](${runUrl})`,
+            ].join('\n');
+
+            // Find and delete any previous bot comment to keep the PR clean
+            const comments = await github.rest.issues.listComments({ owner, repo, issue_number: prNumber });
+            for (const comment of comments.data) {
+              if (comment.user.type === 'Bot' && comment.body.includes('PR Build Artifacts')) {
+                await github.rest.issues.deleteComment({ owner, repo, comment_id: comment.id });
+              }
+            }
+
+            await github.rest.issues.createComment({ owner, repo, issue_number: prNumber, body });