diff --git a/tests/panasonic_heatpump/test_panasonic_heatpump_esp8266.yaml b/tests/panasonic_heatpump/test_panasonic_heatpump_esp8266.yaml
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+---
+# Test configuration for panasonic_heatpump component on ESP8266
+# ESP8266 has limited GPIO pins and only one UART
+
+esp8266:
+  board: d1_mini
+  framework:
+    type: arduino
+
+esphome:
+  name: test-panasonic-heatpump-esp8266
+  friendly_name: "Test Panasonic Heatpump ESP8266"
+
+logger:
+  level: DEBUG
+
+external_components:
+  - source:
+      type: local
+      path: ../../components
+    components: [panasonic_heatpump]
+
+uart:
+  - id: uart_heatpump
+    tx_pin: GPIO13
+    rx_pin: GPIO15
+    baud_rate: 9600
+    data_bits: 8
+    parity: EVEN
+    stop_bits: 1
+
+# Test basic configuration
+panasonic_heatpump:
+  id: my_heatpump
+  uart_id: uart_heatpump
+
+# Test sensor types - first item only
+sensor:
+  - platform: panasonic_heatpump
+    top1:
+      name: "Pump Flow"
+
+# Test binary sensors - first item only
+binary_sensor:
+  - platform: panasonic_heatpump
+    top0:
+      name: "Heatpump State"
+
+# Test text sensors - first item only
+text_sensor:
+  - platform: panasonic_heatpump
+    top4:
+      name: "Operating Mode State"
+
+# Test number controls - first item only
+number:
+  - platform: panasonic_heatpump
+    set5:
+      name: "Set Z1 Heat Request Temperature"
+
+# Test select controls - first item only
+select:
+  - platform: panasonic_heatpump
+    set2:
+      name: "Set Holiday Mode"
+
+# Test switch controls - first item only
+switch:
+  - platform: panasonic_heatpump
+    set1:
+      name: "Set Heatpump"
+
+# Test climate controls - first item only
+climate:
+  - platform: panasonic_heatpump
+    tank:
+      name: "DHW"