diff --git a/esphome/components/sm300d2/sensor.py b/esphome/components/sm300d2/sensor.py
index e0f2b7b280..4245283ab4 100644
--- a/esphome/components/sm300d2/sensor.py
+++ b/esphome/components/sm300d2/sensor.py
@@ -99,24 +99,11 @@ async def to_code(config: ConfigType) -> None:
     await cg.register_component(var, config)
     await uart.register_uart_device(var, config)
 
-    if CONF_CO2 in config:
-        sens = await sensor.new_sensor(config[CONF_CO2])
-        cg.add(var.set_co2_sensor(sens))
-    if CONF_FORMALDEHYDE in config:
-        sens = await sensor.new_sensor(config[CONF_FORMALDEHYDE])
-        cg.add(var.set_formaldehyde_sensor(sens))
-    if CONF_TVOC in config:
-        sens = await sensor.new_sensor(config[CONF_TVOC])
-        cg.add(var.set_tvoc_sensor(sens))
-    if CONF_PM_2_5 in config:
-        sens = await sensor.new_sensor(config[CONF_PM_2_5])
-        cg.add(var.set_pm_2_5_sensor(sens))
-    if CONF_PM_10_0 in config:
-        sens = await sensor.new_sensor(config[CONF_PM_10_0])
-        cg.add(var.set_pm_10_0_sensor(sens))
-    if CONF_TEMPERATURE in config:
-        sens = await sensor.new_sensor(config[CONF_TEMPERATURE])
-        cg.add(var.set_temperature_sensor(sens))
-    if CONF_HUMIDITY in config:
-        sens = await sensor.new_sensor(config[CONF_HUMIDITY])
-        cg.add(var.set_humidity_sensor(sens))
+    sensors = sensor.sub_sensors(config)
+    await sensors(CONF_CO2, var.set_co2_sensor)
+    await sensors(CONF_FORMALDEHYDE, var.set_formaldehyde_sensor)
+    await sensors(CONF_TVOC, var.set_tvoc_sensor)
+    await sensors(CONF_PM_2_5, var.set_pm_2_5_sensor)
+    await sensors(CONF_PM_10_0, var.set_pm_10_0_sensor)
+    await sensors(CONF_TEMPERATURE, var.set_temperature_sensor)
+    await sensors(CONF_HUMIDITY, var.set_humidity_sensor)