diff --git a/homeassistant/components/lightwave/climate.py b/homeassistant/components/lightwave/climate.py
index 60108aba024..5e89e4f8145 100644
--- a/homeassistant/components/lightwave/climate.py
+++ b/homeassistant/components/lightwave/climate.py
@@ -47,9 +47,14 @@ class LightwaveTrv(ClimateEntity):
     _attr_hvac_modes = [HVACMode.HEAT, HVACMode.OFF]
     _attr_min_temp = DEFAULT_MIN_TEMP
     _attr_max_temp = DEFAULT_MAX_TEMP
-    _attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
+    _attr_supported_features = (
+        ClimateEntityFeature.TARGET_TEMPERATURE
+        | ClimateEntityFeature.TURN_OFF
+        | ClimateEntityFeature.TURN_ON
+    )
     _attr_target_temperature_step = 0.5
     _attr_temperature_unit = UnitOfTemperature.CELSIUS
+    _enable_turn_on_off_backwards_compatibility = False
 
     def __init__(self, name, device_id, lwlink, serial):
         """Initialize LightwaveTrv entity."""