Domestic Hot Water

Cooper1957 · January 4

Replaced a 25 yr old bathroom sink faucet 2 handle. This faucet always had plenty of hot water. Hot water tank set to 120 degrees. Replaced with a 2 handle Glacier Bay faucet. Now the hot h/w forever to heat up.
Here's the interesting part. We have a small sink not even 20 ft away. If I turn the bathroom sink on for hot h/w then open the other sink for h/w the bathroom sink h/w within 20 seconds gets nice and hot. Both these sinks come off the same supply line in the crawlspace. Anyone have any ideas other then I should know better then to buy faucets from home depot.
Thanks...

dko · January 4

Your older faucet probably had unrestricted flow and allowed faster removal of the cooled water in the pipes between the faucet and the heated water from the tank. Newer faucets abide by EPA's WaterSense and are usually restricted down to 0.5-1.2gpm.

When you open the hot on the other faucet, you're just getting rid of the cold water quicker.

Hot_water_fan · January 4

One solution would be to use a small diameter pipe from the heater to the sink, so there’s less volume in between.

hot_rod · January 5

A quick check would be to unscrew the bubbler and time it. Close the drain pop up so you don’t lose parts, first.
Sometimes you find a reducing washer that can be removed to increase flow.

Either way you dump water down the drain waiting for hot. A 3/8” Pex supply from tank to faucet solves it also as @Hot_water_fan mentioned

Larry Weingarten · January 5

Hi @Cooper1957 , What is your water pressure, and how long is the run of pipe from the heater to the faucet? If they are not too low or too long, you might be able to do this with 1/4" tubing... if you could put a 1.5 gpm aerator on the faucet. That would give you hot water in not many seconds. 🤠

Yours, Larry

Domestic Hot Water

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