Water heater install requirements, state of ohio Home › Forums › Public Forums › General Plumbing › Water heater install requirements, state of ohio This topic has 1 reply, 2 voices, and was last updated 17 years, 3 months ago by Retired plbg1. Viewing 1 reply thread Author Posts 24 Jan 2007 at 6:38 pm #277971 Rodney P Liefman I have been told that there is a new State requirement that you must install an expansion tank with any new water heater now being installed. Could anyone tell me if this correct or not.Thank you 26 Jan 2007 at 11:11 am #297465 Retired plbg1Participant I dont know but most of new WH here have tank installed, I am going to put one on my heater this summer. 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