As new condition and recently installed by previous sailboat owner (prior to my recent purchase). I simply removed this heaters two coolant hoses October 1st from our Yanmar 2GM20F. Heater works perfect (on shore power and via engine coolant at sea) . But as the sailboat is only 28' I wanted more space in the starboard lazarette... So I've removed it. This heater is simple to install on another boat, and I've downloaded the instruction manual. Selling basically half price versus new. All components saved undamaged leaving add-on connectors attached. Enjoy hot water while at sea or at a marina this winter!