diff --git a/esphome/components/opentherm/output/opentherm_output.cpp b/esphome/components/opentherm/output/opentherm_output.cpp
index 2735c85d06..4092358d75 100644
--- a/esphome/components/opentherm/output/opentherm_output.cpp
+++ b/esphome/components/opentherm/output/opentherm_output.cpp
@@ -7,9 +7,13 @@ static const char *const TAG = "opentherm.output";
 
 void opentherm::OpenthermOutput::write_state(float state) {
   ESP_LOGD(TAG, "Received state: %.2f. Min value: %.2f, max value: %.2f", state, min_value_, max_value_);
-  this->state = state < 0.003 && this->zero_means_zero_
-                    ? 0.0
-                    : clamp(std::lerp(min_value_, max_value_, state), min_value_, max_value_);
+#ifdef USE_OUTPUT_FLOAT_POWER_SCALING
+  bool zero_means_zero = this->zero_means_zero_;
+#else
+  bool zero_means_zero = false;
+#endif
+  this->state =
+      state < 0.003 && zero_means_zero ? 0.0 : clamp(std::lerp(min_value_, max_value_, state), min_value_, max_value_);
   this->has_state_ = true;
   ESP_LOGD(TAG, "Output %s set to %.2f", this->id_, this->state);
 }