diff --git a/pyplumio/devices/ecomax.py b/pyplumio/devices/ecomax.py
index 3132d119..ba49960a 100644
--- a/pyplumio/devices/ecomax.py
+++ b/pyplumio/devices/ecomax.py
@@ -256,7 +256,7 @@ async def _add_thermostat_parameters(
         self,
         parameters: dict[int, Sequence[tuple[int, ParameterDataType]]] | None,
     ) -> bool:
-        """set thermostat parameters."""
+        """Set thermostat parameters."""
         if parameters is None:
             return False
 
diff --git a/pyplumio/helpers/schedule.py b/pyplumio/helpers/schedule.py
index 5405ff6f..d5d460ab 100644
--- a/pyplumio/helpers/schedule.py
+++ b/pyplumio/helpers/schedule.py
@@ -81,18 +81,18 @@ def set_state(
         start: str = START_OF_DAY,
         end: str = END_OF_DAY,
     ) -> None:
-        """set state for interval."""
+        """Set state for interval."""
         index, stop_index = _parse_interval(start, end)
         while index < stop_index:
             self._intervals[index] = state == STATE_ON
             index += 1
 
     def set_on(self, start: str = START_OF_DAY, end: str = END_OF_DAY) -> None:
-        """set on state for interval."""
+        """Set on state for interval."""
         self.set_state(STATE_ON, start, end)
 
     def set_off(self, start: str = START_OF_DAY, end: str = END_OF_DAY) -> None:
-        """set off state for interval."""
+        """Set off state for interval."""
         self.set_state(STATE_OFF, start, end)
 
     @property
diff --git a/pyplumio/structures/ecomax_parameters.py b/pyplumio/structures/ecomax_parameters.py
index 2ad18c42..1b5f32f2 100644
--- a/pyplumio/structures/ecomax_parameters.py
+++ b/pyplumio/structures/ecomax_parameters.py
@@ -27,7 +27,7 @@ class EcomaxParameter(Parameter):
     description: EcomaxParameterDescription
 
     async def set(self, value: ParameterValueType, retries: int = 5) -> bool:
-        """set parameter value."""
+        """Set parameter value."""
         if isinstance(value, (int, float)):
             value *= self.description.multiplier
             value -= self.description.offset
diff --git a/pyplumio/structures/mixer_parameters.py b/pyplumio/structures/mixer_parameters.py
index 031b3acd..262b408b 100644
--- a/pyplumio/structures/mixer_parameters.py
+++ b/pyplumio/structures/mixer_parameters.py
@@ -27,7 +27,7 @@ class MixerParameter(Parameter):
     description: MixerParameterDescription
 
     async def set(self, value: ParameterValueType, retries: int = 5) -> bool:
-        """set parameter value."""
+        """Set parameter value."""
         if isinstance(value, (int, float)):
             value *= self.description.multiplier
             value -= self.description.offset
diff --git a/pyplumio/structures/thermostat_parameters.py b/pyplumio/structures/thermostat_parameters.py
index 29e98645..fd8141d6 100644
--- a/pyplumio/structures/thermostat_parameters.py
+++ b/pyplumio/structures/thermostat_parameters.py
@@ -37,7 +37,7 @@ def __init__(self, offset: int, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
     async def set(self, value: ParameterValueType, retries: int = 5) -> bool:
-        """set parameter value."""
+        """Set parameter value."""
         if isinstance(value, (int, float)):
             value *= self.description.multiplier