Quote:
Originally Posted by Justputt
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I just ran a quick test using my guest bathtub, which I think is furthest from the tankless heater.
It took 1 minute to get warm enough at the tube faucet (showerhead flow rate would be lower and usually takes 2 minutes), and it dispensed 10 qt (measured with a 10 qt bucket) in that time.
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I looked at all the DYI stuff this past summer and decided the cost wasn't worth it since all I was saving was 10 qt of water, as it still takes the same amount of time to heat the water at the source and cycle the cold water from the lines.
Additionally, timers are fine, but you're either going to set the timer to start every day at say 7 a.m. or set it to run for a couple minutes every time you flick a switch somewhere in your house. To me, that's just a hassle.
IMO, flip the HW on, hit the head or brush your teeth and that should be good enough to at least have comfortable warm water to start.
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Agree, I did a similar test with similar results.
Also:
Measured close to a 10 degree temperature drop from the water heater to the furthest bath (~70 ft).
The cold water temperature here stays close to 75 degrees. It takes less than 10 min for the hot water lines to return to that temperature.