diff --git a/homeassistant/components/modbus/__init__.py b/homeassistant/components/modbus/__init__.py
index 77e9b6f7ca9..c2a1a76840c 100644
--- a/homeassistant/components/modbus/__init__.py
+++ b/homeassistant/components/modbus/__init__.py
@@ -17,6 +17,7 @@ from homeassistant.const import (
     CONF_HOST,
     CONF_METHOD,
     CONF_NAME,
+    CONF_OFFSET,
     CONF_PORT,
     CONF_SCAN_INTERVAL,
     CONF_SLAVE,
@@ -46,7 +47,6 @@ from .const import (
     CONF_INPUT_TYPE,
     CONF_MAX_TEMP,
     CONF_MIN_TEMP,
-    CONF_OFFSET,
     CONF_PARITY,
     CONF_PRECISION,
     CONF_REGISTER,
@@ -257,7 +257,6 @@ class ModbusHub:
 
     def __init__(self, client_config):
         """Initialize the Modbus hub."""
-
         # generic configuration
         self._client = None
         self._lock = threading.Lock()
diff --git a/homeassistant/components/modbus/binary_sensor.py b/homeassistant/components/modbus/binary_sensor.py
index c9e9cc4196a..8e91945d073 100644
--- a/homeassistant/components/modbus/binary_sensor.py
+++ b/homeassistant/components/modbus/binary_sensor.py
@@ -10,13 +10,12 @@ from homeassistant.components.binary_sensor import (
     PLATFORM_SCHEMA,
     BinarySensorEntity,
 )
-from homeassistant.const import CONF_DEVICE_CLASS, CONF_NAME, CONF_SLAVE
+from homeassistant.const import CONF_ADDRESS, CONF_DEVICE_CLASS, CONF_NAME, CONF_SLAVE
 from homeassistant.helpers import config_validation as cv
 
 from .const import (
     CALL_TYPE_COIL,
     CALL_TYPE_DISCRETE,
-    CONF_ADDRESS,
     CONF_COILS,
     CONF_HUB,
     CONF_INPUT_TYPE,
diff --git a/homeassistant/components/modbus/climate.py b/homeassistant/components/modbus/climate.py
index b09a38f082e..c1b7b2e6bf4 100644
--- a/homeassistant/components/modbus/climate.py
+++ b/homeassistant/components/modbus/climate.py
@@ -15,6 +15,7 @@ from homeassistant.components.climate.const import (
 from homeassistant.const import (
     ATTR_TEMPERATURE,
     CONF_NAME,
+    CONF_OFFSET,
     CONF_SCAN_INTERVAL,
     CONF_SLAVE,
     CONF_STRUCTURE,
@@ -39,7 +40,6 @@ from .const import (
     CONF_DATA_TYPE,
     CONF_MAX_TEMP,
     CONF_MIN_TEMP,
-    CONF_OFFSET,
     CONF_PRECISION,
     CONF_SCALE,
     CONF_STEP,
@@ -146,7 +146,6 @@ class ModbusThermostat(ClimateEntity):
 
         False if entity pushes its state to HA.
         """
-
         # Handle polling directly in this entity
         return False
 
diff --git a/homeassistant/components/modbus/const.py b/homeassistant/components/modbus/const.py
index e79b69bbb87..5e304165e42 100644
--- a/homeassistant/components/modbus/const.py
+++ b/homeassistant/components/modbus/const.py
@@ -13,7 +13,6 @@ CONF_REVERSE_ORDER = "reverse_order"
 CONF_SCALE = "scale"
 CONF_COUNT = "count"
 CONF_PRECISION = "precision"
-CONF_OFFSET = "offset"
 CONF_COILS = "coils"
 
 # integration names
@@ -51,7 +50,6 @@ DEFAULT_SCAN_INTERVAL = 15  # seconds
 # binary_sensor.py
 CONF_INPUTS = "inputs"
 CONF_INPUT_TYPE = "input_type"
-CONF_ADDRESS = "address"
 
 # sensor.py
 # CONF_DATA_TYPE = "data_type"
diff --git a/homeassistant/components/modbus/cover.py b/homeassistant/components/modbus/cover.py
index ab16e5306f1..709c772564a 100644
--- a/homeassistant/components/modbus/cover.py
+++ b/homeassistant/components/modbus/cover.py
@@ -148,7 +148,6 @@ class ModbusCover(CoverEntity, RestoreEntity):
 
         False if entity pushes its state to HA.
         """
-
         # Handle polling directly in this entity
         return False
 
diff --git a/homeassistant/components/modbus/switch.py b/homeassistant/components/modbus/switch.py
index 8fe1f886c3e..b1b07fb5a55 100644
--- a/homeassistant/components/modbus/switch.py
+++ b/homeassistant/components/modbus/switch.py
@@ -200,7 +200,6 @@ class ModbusRegisterSwitch(ModbusBaseSwitch, SwitchEntity):
 
     def turn_on(self, **kwargs):
         """Set switch on."""
-
         # Only holding register is writable
         if self._register_type == CALL_TYPE_REGISTER_HOLDING:
             self._write_register(self._command_on)
@@ -209,7 +208,6 @@ class ModbusRegisterSwitch(ModbusBaseSwitch, SwitchEntity):
 
     def turn_off(self, **kwargs):
         """Set switch off."""
-
         # Only holding register is writable
         if self._register_type == CALL_TYPE_REGISTER_HOLDING:
             self._write_register(self._command_off)
diff --git a/tests/components/modbus/conftest.py b/tests/components/modbus/conftest.py
index e3a707b7fc9..a3e6078ea09 100644
--- a/tests/components/modbus/conftest.py
+++ b/tests/components/modbus/conftest.py
@@ -46,7 +46,6 @@ async def setup_base_test(
     scan_interval,
 ):
     """Run setup device for given config."""
-
     # Full sensor configuration
     config = {
         entity_domain: {
@@ -79,7 +78,6 @@ async def run_base_read_test(
     now,
 ):
     """Run test for given config."""
-
     # Setup inputs for the sensor
     read_result = ReadResult(register_words)
     if register_type == CALL_TYPE_COIL:
diff --git a/tests/components/modbus/test_modbus_binary_sensor.py b/tests/components/modbus/test_modbus_binary_sensor.py
index 91374cde22d..3bc7223c865 100644
--- a/tests/components/modbus/test_modbus_binary_sensor.py
+++ b/tests/components/modbus/test_modbus_binary_sensor.py
@@ -7,11 +7,10 @@ from homeassistant.components.binary_sensor import DOMAIN as SENSOR_DOMAIN
 from homeassistant.components.modbus.const import (
     CALL_TYPE_COIL,
     CALL_TYPE_DISCRETE,
-    CONF_ADDRESS,
     CONF_INPUT_TYPE,
     CONF_INPUTS,
 )
-from homeassistant.const import CONF_NAME, STATE_OFF, STATE_ON
+from homeassistant.const import CONF_ADDRESS, CONF_NAME, STATE_OFF, STATE_ON
 
 from .conftest import run_base_read_test, setup_base_test
 
diff --git a/tests/components/modbus/test_modbus_sensor.py b/tests/components/modbus/test_modbus_sensor.py
index 68cdbffa462..3f7c0fc60df 100644
--- a/tests/components/modbus/test_modbus_sensor.py
+++ b/tests/components/modbus/test_modbus_sensor.py
@@ -8,7 +8,6 @@ from homeassistant.components.modbus.const import (
     CALL_TYPE_REGISTER_INPUT,
     CONF_COUNT,
     CONF_DATA_TYPE,
-    CONF_OFFSET,
     CONF_PRECISION,
     CONF_REGISTER,
     CONF_REGISTER_TYPE,
@@ -21,7 +20,7 @@ from homeassistant.components.modbus.const import (
     DATA_TYPE_UINT,
 )
 from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
-from homeassistant.const import CONF_NAME
+from homeassistant.const import CONF_NAME, CONF_OFFSET
 
 from .conftest import run_base_read_test, setup_base_test