diff --git a/esphome/components/dallas/esp_one_wire.cpp b/esphome/components/dallas/esp_one_wire.cpp
index 885846e5e5..5bd0f42855 100644
--- a/esphome/components/dallas/esp_one_wire.cpp
+++ b/esphome/components/dallas/esp_one_wire.cpp
@@ -142,7 +142,6 @@ void IRAM_ATTR ESPOneWire::select(uint64_t address) {
 void IRAM_ATTR ESPOneWire::reset_search() {
   this->last_discrepancy_ = 0;
   this->last_device_flag_ = false;
-  this->last_family_discrepancy_ = 0;
   this->rom_number_ = 0;
 }
 uint64_t IRAM_ATTR ESPOneWire::search() {
@@ -195,9 +194,6 @@ uint64_t IRAM_ATTR ESPOneWire::search() {
 
         if (!branch) {
           last_zero = id_bit_number;
-          if (last_zero < 9) {
-            this->last_discrepancy_ = last_zero;
-          }
         }
       }
 
diff --git a/esphome/components/dallas/esp_one_wire.h b/esphome/components/dallas/esp_one_wire.h
index ef6f079f02..7544a6fe98 100644
--- a/esphome/components/dallas/esp_one_wire.h
+++ b/esphome/components/dallas/esp_one_wire.h
@@ -60,7 +60,6 @@ class ESPOneWire {
 
   ISRInternalGPIOPin pin_;
   uint8_t last_discrepancy_{0};
-  uint8_t last_family_discrepancy_{0};
   bool last_device_flag_{false};
   uint64_t rom_number_{0};
 };