Don't jump to a conclusion so quickly. It took me at least 3 minutes to
get hot water. Flushing cold water from 150 ft of 1" pipe takes (about
6 gallons) takes 4 minutes at 1.5 gpm. At 2.2 gpm drops to 2.7 minutes.
Still a long time. Installing a thermosyphon dropped this to seconds.

RB

j j wrote:
"PV" wrote in message
om...

Hello,

I bought a newly built house 3 years ago. At that time, I asked the
builder why it took so long, 3-4 minutes, before hot water came out of
the faucets when you first turned them on. He said that was the
standard wait.


that's bull****. if you have a tank then it's full of hot water and the only
time you need to wait is the time it takes for water to each the faucet from
the tank, which is 10 or 20 seconds, not 4 minutes.
If you have a tankless water heater, I don't know how long you wait but I
doubt people would use those if waiting 4 minutes for hot water with the
faucet running would be the norm.