I installed this hot water heater on a 400sq foot cabin where the old hot water heater had died. Local hot water heaters at Lowes cost over $1000 minimum for identical specifications due to lack of availability on big island.This heater arrived and was identical in size, appearance, and function to the previous heater, except it's digital now, so hookup was quite simple. The led displays are fairly bright, and it's simple to select the desired temperature.This hot water heater is able to sustain extremely hot water fairly indefinitely to a single shower, which was my target. The water flow is good at that volume, and it's operation is fairly silent. Overall quality of the unit seems fine, though time will tell.All in all, I would definitely buy this heater again for a small application like this.