On September 29, 2016 at 16:21, King of typos said...
I've always wondered, if it would be better to put a Point Of Use heater closer to the fixtures in a large house. Say it would services 3 fixtures, what are the probably of all 3 being used at the same time. This is to use the POU heater for those VERY important seconds to et the hot water. Then once the normal water heater's water reaches the POU, the POU can then adjust as needed.
When we redo the master bathroom this winter that is what we are going to add. I already have a Rinnai for that end of the house, but am going to add a 6-10 gallon 120v tank before the first fixture.
My only concern is there will be a slug of cold water from the pipes coming into that tank when a faucet is turned on so will it mix enough with the hot in the tank and the hot from the Rinnai so that it is seamless. Or will there be short period of colder water where they haven't mixed well.
