Amway company advised and purposely labeled on the power plug to leave the plug on for 24 hours/ day for 366 days.

It is very safe as compared to other electrical appliances.

My family has been using Espring for 5 years and I have many customers who used 2nd generation Amway filter for more than 10 years. So far I have not encounter any of my customer's Espring kena lighting strike yet. If it really happen, Amway company will replace 1 to 1 during the 2 years warranty period.