Quote:
Originally Posted by BobnBev
Just an FYI-----I spoke with a plumber today, and he said that all the instant hot water units that are mounted on the outside of the house are too small. It takes 5 minutes to get hot water to the shower, then it's not all that hot. Something to check out.  |
If he was a plumber, I wouldn't call him back. First off, they are not "instant hot water", they are tankless hot water. Both things exist, but they are not one in the same. It's not the size of the unit that causes the delay, it's the distance the water has to travel from the heater to the end point. If the size was a factor, once hot water reached the end point, the issue would be that the hot water would be sporadic with cold because the unit would be unable to provide enough heat to keep up with the rate of flow. This is no different than a traditional hot water tank where the amount of time it takes for hot water to reach the end point is relative to the distance that water needs to travel to get there.