From 3405b2549bd73c08451867f1ededdb2e97a7df87 Mon Sep 17 00:00:00 2001
From: Michael <35783820+mib1185@users.noreply.github.com>
Date: Fri, 25 Apr 2025 00:17:47 +0200
Subject: [PATCH] =?UTF-8?q?Add=20new=20units=20L/h=20,=20L/s=20and=20m?=
 =?UTF-8?q?=C2=B3/s=20to=20volume=20flow=20rate=20sensor=20device=20class?=
 =?UTF-8?q?=20(#143625)?=
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add new units L/h , L/s and m³/s
---
 homeassistant/const.py                |  3 +++
 homeassistant/util/unit_conversion.py |  6 ++++++
 tests/util/test_unit_conversion.py    | 18 ++++++++++++++++++
 3 files changed, 27 insertions(+)

diff --git a/homeassistant/const.py b/homeassistant/const.py
index a7ace52a0da..64faf019567 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -766,8 +766,11 @@ class UnitOfVolumeFlowRate(StrEnum):
     """Volume flow rate units."""
 
     CUBIC_METERS_PER_HOUR = "m³/h"
+    CUBIC_METERS_PER_SECOND = "m³/s"
     CUBIC_FEET_PER_MINUTE = "ft³/min"
+    LITERS_PER_HOUR = "L/h"
     LITERS_PER_MINUTE = "L/min"
+    LITERS_PER_SECOND = "L/s"
     GALLONS_PER_MINUTE = "gal/min"
     MILLILITERS_PER_SECOND = "mL/s"
 
diff --git a/homeassistant/util/unit_conversion.py b/homeassistant/util/unit_conversion.py
index f2619c5dd61..f559512c1a7 100644
--- a/homeassistant/util/unit_conversion.py
+++ b/homeassistant/util/unit_conversion.py
@@ -705,10 +705,13 @@ class VolumeFlowRateConverter(BaseUnitConverter):
     # Units in terms of m³/h
     _UNIT_CONVERSION: dict[str | None, float] = {
         UnitOfVolumeFlowRate.CUBIC_METERS_PER_HOUR: 1,
+        UnitOfVolumeFlowRate.CUBIC_METERS_PER_SECOND: 1 / _HRS_TO_SECS,
         UnitOfVolumeFlowRate.CUBIC_FEET_PER_MINUTE: 1
         / (_HRS_TO_MINUTES * _CUBIC_FOOT_TO_CUBIC_METER),
+        UnitOfVolumeFlowRate.LITERS_PER_HOUR: 1 / _L_TO_CUBIC_METER,
         UnitOfVolumeFlowRate.LITERS_PER_MINUTE: 1
         / (_HRS_TO_MINUTES * _L_TO_CUBIC_METER),
+        UnitOfVolumeFlowRate.LITERS_PER_SECOND: 1 / (_HRS_TO_SECS * _L_TO_CUBIC_METER),
         UnitOfVolumeFlowRate.GALLONS_PER_MINUTE: 1
         / (_HRS_TO_MINUTES * _GALLON_TO_CUBIC_METER),
         UnitOfVolumeFlowRate.MILLILITERS_PER_SECOND: 1
@@ -717,7 +720,10 @@ class VolumeFlowRateConverter(BaseUnitConverter):
     VALID_UNITS = {
         UnitOfVolumeFlowRate.CUBIC_FEET_PER_MINUTE,
         UnitOfVolumeFlowRate.CUBIC_METERS_PER_HOUR,
+        UnitOfVolumeFlowRate.CUBIC_METERS_PER_SECOND,
+        UnitOfVolumeFlowRate.LITERS_PER_HOUR,
         UnitOfVolumeFlowRate.LITERS_PER_MINUTE,
+        UnitOfVolumeFlowRate.LITERS_PER_SECOND,
         UnitOfVolumeFlowRate.GALLONS_PER_MINUTE,
         UnitOfVolumeFlowRate.MILLILITERS_PER_SECOND,
     }
diff --git a/tests/util/test_unit_conversion.py b/tests/util/test_unit_conversion.py
index 3f55ceef242..883b17c733c 100644
--- a/tests/util/test_unit_conversion.py
+++ b/tests/util/test_unit_conversion.py
@@ -806,12 +806,30 @@ _CONVERTED_VALUE: dict[
             2500,
             UnitOfVolumeFlowRate.MILLILITERS_PER_SECOND,
         ),
+        (
+            1,
+            UnitOfVolumeFlowRate.CUBIC_METERS_PER_SECOND,
+            3600,
+            UnitOfVolumeFlowRate.CUBIC_METERS_PER_HOUR,
+        ),
+        (
+            1,
+            UnitOfVolumeFlowRate.CUBIC_METERS_PER_SECOND,
+            3600000,
+            UnitOfVolumeFlowRate.LITERS_PER_HOUR,
+        ),
         (
             3,
             UnitOfVolumeFlowRate.LITERS_PER_MINUTE,
             50,
             UnitOfVolumeFlowRate.MILLILITERS_PER_SECOND,
         ),
+        (
+            3.6,
+            UnitOfVolumeFlowRate.CUBIC_METERS_PER_HOUR,
+            1,
+            UnitOfVolumeFlowRate.LITERS_PER_SECOND,
+        ),
     ],
 }