diff --git a/homeassistant/components/flipr/__init__.py b/homeassistant/components/flipr/__init__.py
index 05bbd0d5449..66ea93484f7 100644
--- a/homeassistant/components/flipr/__init__.py
+++ b/homeassistant/components/flipr/__init__.py
@@ -35,7 +35,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     return True
 
 
-async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry):
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Unload a config entry."""
     unload_ok = await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
 
@@ -54,8 +54,6 @@ class FliprDataUpdateCoordinator(DataUpdateCoordinator):
         password = entry.data[CONF_PASSWORD]
         self.flipr_id = entry.data[CONF_FLIPR_ID]
 
-        _LOGGER.debug("Config entry values : %s, %s", username, self.flipr_id)
-
         # Establishes the connection.
         self.client = FliprAPIRestClient(username, password)
         self.entry = entry
diff --git a/homeassistant/components/flipr/config_flow.py b/homeassistant/components/flipr/config_flow.py
index b503281fed4..b1e4f31d044 100644
--- a/homeassistant/components/flipr/config_flow.py
+++ b/homeassistant/components/flipr/config_flow.py
@@ -45,7 +45,7 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
                 errors["base"] = "unknown"
                 _LOGGER.exception(exception)
 
-            if not errors and len(flipr_ids) == 0:
+            if not errors and not flipr_ids:
                 # No flipr_id found. Tell the user with an error message.
                 errors["base"] = "no_flipr_id_found"
 
@@ -85,9 +85,8 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
 
     async def _authenticate_and_search_flipr(self) -> list[str]:
         """Validate the username and password provided and searches for a flipr id."""
-        client = await self.hass.async_add_executor_job(
-            FliprAPIRestClient, self._username, self._password
-        )
+        # Instantiates the flipr API that does not require async since it is has no network access.
+        client = FliprAPIRestClient(self._username, self._password)
 
         flipr_ids = await self.hass.async_add_executor_job(client.search_flipr_ids)
 
diff --git a/homeassistant/components/flipr/sensor.py b/homeassistant/components/flipr/sensor.py
index 3a02b7e2f2e..f9fd4e9633e 100644
--- a/homeassistant/components/flipr/sensor.py
+++ b/homeassistant/components/flipr/sensor.py
@@ -6,6 +6,7 @@ from homeassistant.const import (
     ATTR_ATTRIBUTION,
     DEVICE_CLASS_TEMPERATURE,
     DEVICE_CLASS_TIMESTAMP,
+    ELECTRIC_POTENTIAL_MILLIVOLT,
     TEMP_CELSIUS,
 )
 
@@ -14,7 +15,7 @@ from .const import ATTRIBUTION, CONF_FLIPR_ID, DOMAIN
 
 SENSORS = {
     "chlorine": {
-        "unit": "mV",
+        "unit": ELECTRIC_POTENTIAL_MILLIVOLT,
         "icon": "mdi:pool",
         "name": "Chlorine",
         "device_class": None,
@@ -33,7 +34,7 @@ SENSORS = {
         "device_class": DEVICE_CLASS_TIMESTAMP,
     },
     "red_ox": {
-        "unit": "mV",
+        "unit": ELECTRIC_POTENTIAL_MILLIVOLT,
         "icon": "mdi:pool",
         "name": "Red OX",
         "device_class": None,