The Titan In-line Whole House Hot water heater is Great. No more tanks of water and it really does the whole house. I have two bathrooms and of course a kitchen and laundry that uses hot water and I am in the mountains and this little box is really good. There are limits. If too much hot water is being  used in too many places, it can get cold for a while, but I had that with my tank too. Overall a great little hot water heater. Note : Needs to be hard wired to box, so add that to cost. Plumber needed to cut hot water line and need to be solidly mounted to flat surface on wall or mount built for...