diff --git a/esphome/components/const/__init__.py b/esphome/components/const/__init__.py
index b54d797f09..6b1ffc5473 100644
--- a/esphome/components/const/__init__.py
+++ b/esphome/components/const/__init__.py
@@ -9,6 +9,7 @@ BYTE_ORDER_BIG = "big_endian"
 CONF_ACCELEROMETER_ODR = "accelerometer_odr"
 CONF_ACCELEROMETER_RANGE = "accelerometer_range"
 CONF_ALLOWED_IPS = "allowed_ips"
+CONF_AUTOMATIC_BASELINE_CALIBRATION = "automatic_baseline_calibration"
 CONF_B_CONSTANT = "b_constant"
 CONF_BREATH_VOC_EQUIVALENT = "breath_voc_equivalent"
 CONF_BYTE_ORDER = "byte_order"
diff --git a/esphome/components/mhz19/sensor.py b/esphome/components/mhz19/sensor.py
index 053f17765e..4daeef5059 100644
--- a/esphome/components/mhz19/sensor.py
+++ b/esphome/components/mhz19/sensor.py
@@ -2,6 +2,7 @@ from esphome import automation
 from esphome.automation import maybe_simple_id
 import esphome.codegen as cg
 from esphome.components import sensor, uart
+from esphome.components.const import CONF_AUTOMATIC_BASELINE_CALIBRATION
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_CO2,
@@ -19,7 +20,6 @@ from esphome.types import ConfigType
 
 DEPENDENCIES = ["uart"]
 
-CONF_AUTOMATIC_BASELINE_CALIBRATION = "automatic_baseline_calibration"
 CONF_DETECTION_RANGE = "detection_range"
 
 mhz19_ns = cg.esphome_ns.namespace("mhz19")