diff --git a/homeassistant/components/modbus/__init__.py b/homeassistant/components/modbus/__init__.py
index a6e901af749..823703ac4c9 100644
--- a/homeassistant/components/modbus/__init__.py
+++ b/homeassistant/components/modbus/__init__.py
@@ -2,6 +2,8 @@
 import logging
 import threading
 
+from pymodbus.client.sync import ModbusSerialClient, ModbusTcpClient, ModbusUdpClient
+from pymodbus.transaction import ModbusRtuFramer
 import voluptuous as vol
 
 from homeassistant.const import (
@@ -91,9 +93,7 @@ def setup_client(client_config):
     client_type = client_config[CONF_TYPE]
 
     if client_type == "serial":
-        from pymodbus.client.sync import ModbusSerialClient as ModbusClient
-
-        return ModbusClient(
+        return ModbusSerialClient(
             method=client_config[CONF_METHOD],
             port=client_config[CONF_PORT],
             baudrate=client_config[CONF_BAUDRATE],
@@ -103,27 +103,20 @@ def setup_client(client_config):
             timeout=client_config[CONF_TIMEOUT],
         )
     if client_type == "rtuovertcp":
-        from pymodbus.client.sync import ModbusTcpClient as ModbusClient
-        from pymodbus.transaction import ModbusRtuFramer
-
-        return ModbusClient(
+        return ModbusTcpClient(
             host=client_config[CONF_HOST],
             port=client_config[CONF_PORT],
             framer=ModbusRtuFramer,
             timeout=client_config[CONF_TIMEOUT],
         )
     if client_type == "tcp":
-        from pymodbus.client.sync import ModbusTcpClient as ModbusClient
-
-        return ModbusClient(
+        return ModbusTcpClient(
             host=client_config[CONF_HOST],
             port=client_config[CONF_PORT],
             timeout=client_config[CONF_TIMEOUT],
         )
     if client_type == "udp":
-        from pymodbus.client.sync import ModbusUdpClient as ModbusClient
-
-        return ModbusClient(
+        return ModbusUdpClient(
             host=client_config[CONF_HOST],
             port=client_config[CONF_PORT],
             timeout=client_config[CONF_TIMEOUT],
diff --git a/homeassistant/components/modbus/climate.py b/homeassistant/components/modbus/climate.py
index c6764482d96..99ea686543d 100644
--- a/homeassistant/components/modbus/climate.py
+++ b/homeassistant/components/modbus/climate.py
@@ -6,8 +6,8 @@ import voluptuous as vol
 
 from homeassistant.components.climate import PLATFORM_SCHEMA, ClimateDevice
 from homeassistant.components.climate.const import (
-    SUPPORT_TARGET_TEMPERATURE,
     HVAC_MODE_AUTO,
+    SUPPORT_TARGET_TEMPERATURE,
 )
 from homeassistant.const import (
     ATTR_TEMPERATURE,
diff --git a/homeassistant/components/modbus/sensor.py b/homeassistant/components/modbus/sensor.py
index 1a5c71812d6..86f6445b8d6 100644
--- a/homeassistant/components/modbus/sensor.py
+++ b/homeassistant/components/modbus/sensor.py
@@ -1,8 +1,8 @@
 """Support for Modbus Register sensors."""
 import logging
 import struct
-
 from typing import Any, Union
+
 import voluptuous as vol
 
 from homeassistant.components.sensor import PLATFORM_SCHEMA