A welcome improvement
I bought this heater to replace a faulty and leaking 30gal. tank unit, which had been located in our utility room, along with the washer, dryer, and upright freezer, catbox, hamper.....you get the idea. Not only did this unit provide us with on-demand heated water, it eliminated an entire appliance from the layout of our utility room, allowing for a much greater and more effective use of the space. Sweet!
The installation in our case was not for the faint of heart, for it required running gas
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piping to the unit, plumbing through the exterior brick wall into an insanely compact section of the crawlspace, running the cable for the remote control box, and running electrical to supply the unit control. I did this myself, which greatly reduced the installation cost, but I know not everyone is able to do that.
I live in a small, 40 year old home with a 150 amp service panel, and the electric heaters I looked at required more dedicated current usage than I thought I could supply, and the indoor gas units would require putting significantly sized hole(s) in my brick veneer to accommodate the required vent pipe. This unit provided me with a solution to that and many other questions. I love it!