Electric Hot Water Heater Home › Forums › Public Forums › General Plumbing › Electric Hot Water Heater This topic has 1 reply, 2 voices, and was last updated 17 years, 6 months ago by Retired plbg1. Viewing 1 reply thread Author Posts 22 Apr 2007 at 3:47 pm #278017 Adelaine Cruz How do you clean Calicum built-up from Electric Hot Water Heater. 23 Apr 2007 at 9:41 am #297529 Retired plbg1Participant Turn off El. & Water. I take out the lower el. on wh, and take 3/4″ piece of hose and tape it on my wet vac hose and suck it out best I can. Let me know. Art retired plbg Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In