diff --git a/esphome/components/vaillantx6/vaillantx6.h b/esphome/components/vaillantx6/vaillantx6.h
new file mode 100644
index 000000000000..4c685defff21
--- /dev/null
+++ b/esphome/components/vaillantx6/vaillantx6.h
@@ -0,0 +1,54 @@
+#ifndef VAILLANTX6_H
+#define VAILLANTX6_H
+
+#include "esphome.h"
+#include <string>
+
+#define CMD_LENGTH 7
+#define ANSWER_LENGTH 8
+#define RETURN_TYPE_COUNT 3
+
+typedef unsigned char byte;
+
+void logCmd(const char *tag, byte *cmd);
+
+enum VaillantReturnTypes {
+  None = 0,
+  Temperature,
+  SensorState,
+  Bool,
+  Minutes
+};
+
+uint8_t VaillantReturnTypeLength(VaillantReturnTypes t);
+
+float VaillantParseTemperature(byte *answerBuff, uint8_t offset);
+
+int VaillantParseBool(byte *answerBuff, uint8_t offset);
+
+struct VaillantCommand {
+  std::string Name;
+  byte Address;
+  VaillantReturnTypes ReturnType;
+};
+
+extern const VaillantCommand vaillantCommands[];
+extern const byte vaillantCommandsSize;
+
+class Vaillantx6Sensor : public PollingComponent, public UARTDevice {
+ public:
+  Sensor *sensor_{nullptr};
+  BinarySensor *binary_sensor_{nullptr};
+  const VaillantCommand *command_;
+
+  Vaillantx6Sensor(UARTComponent *parent, const VaillantCommand *command, uint32_t update_interval);
+  void set_sensor(Sensor *sensor);
+  void set_binary_sensor(BinarySensor *binary_sensor);
+  byte checksum(byte *data, byte len);
+  bool checksumOk(byte *answerBuff, byte len);
+  int buildPacket(byte *packet, byte address);
+  int sendPacket(byte *answerBuff, byte *packet);
+  void update() override;
+};
+
+#endif  // VAILLANTX6SENSOR_H
\ No newline at end of file