My cheap Taiwan water heater started leaking and I decided to get a new one. After much hunting around the capital for one 220v with 3/4 connections, I settled. I bought an Eemax that is 220V with 1/2in compression connections. Although I have an issue with a very slow leak where I put a coupler to convert to 3/4. I was pleased to learn that that brand is manufactured in the USA. It is well built and has very good technical support. Also a company in DR called Aqua Solutions repairs, rebuilds and installs the units. The electrical connection is two hot wires and a ground. The 2 hot wires are from Co Phased 115v to 220v. Not exactly sure how that works but that was exactly what my old one had also so the wiring was simple. The unit is small but heats quickly and provides plenty of hot water for 2 sinks, 1 kitchen sink and a shower. It is solely on demand and you hear a distinct click as you turn the hot water on and off. Comes with a 1 year warranty on mechanics and electrical. May have had an affect on warranty, as I installed myself I hope this helps someone who is in the market and deciding on a purchase.
JB
JB