diff --git a/esphome/components/binary_sensor/filter.cpp b/esphome/components/binary_sensor/filter.cpp
index 53c2daf42d..836c341574 100644
--- a/esphome/components/binary_sensor/filter.cpp
+++ b/esphome/components/binary_sensor/filter.cpp
@@ -114,15 +114,6 @@ LambdaFilter::LambdaFilter(std::function<optional<bool>(bool)> f) : f_(std::move
 
 optional<bool> LambdaFilter::new_value(bool value, bool is_initial) { return this->f_(value); }
 
-optional<bool> UniqueFilter::new_value(bool value, bool is_initial) {
-  if (this->last_value_.has_value() && *this->last_value_ == value) {
-    return {};
-  } else {
-    this->last_value_ = value;
-    return value;
-  }
-}
-
 }  // namespace binary_sensor
 
 }  // namespace esphome
diff --git a/esphome/components/binary_sensor/filter.h b/esphome/components/binary_sensor/filter.h
index 64a33f6e34..0f0ab6875f 100644
--- a/esphome/components/binary_sensor/filter.h
+++ b/esphome/components/binary_sensor/filter.h
@@ -105,14 +105,6 @@ class LambdaFilter : public Filter {
   std::function<optional<bool>(bool)> f_;
 };
 
-class UniqueFilter : public Filter {
- public:
-  optional<bool> new_value(bool value, bool is_initial) override;
-
- protected:
-  optional<bool> last_value_{};
-};
-
 }  // namespace binary_sensor
 
 }  // namespace esphome