diff --git a/tasks/heater.py b/tasks/heater.py
index 2ede766..1fcb823 100644
--- a/tasks/heater.py
+++ b/tasks/heater.py
@@ -39,7 +39,7 @@ class HeaterTask(ATask):
 
 		self.device.set_on_changed('power_eff', ChangedInteger(self.on_changed_power).set)
 
-		pulse_period_s = 1
+		pulse_period_s = 10
 		pulse_period_count = pulse_period_s/self.interval
 
 		with self.device.open():