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Is it a central water heater or a local point of use water heater?

With the centralized system:

  • Hot water pipes are more susceptible to corrosion then cold water pipes, the hot water accelerates the build up of rust. If you have galvanized piping, that can be a major source of slow water.
  • The hot water heater may also have problems which reduce the rate that water can get into the tank and from there on into the piping system. You might insure that the valves on the hot water heater and along the flow path are all fully opened.

With a point of use system, it may be that there is a control valve that won't allow the water to flow unless it is a certain temperature. If it is taking longer to heat the water, it could slow down the flow considerably.

When the hot side pressure is bad in all of the house it is going to be a problem with the hot water heater outlet usually. If it is just bad at one location especially when it is the shower and your shower is a single handle unit, it is the cartridge in the valve body. It is a very common problem with Moen valves as well. Simply replace cartridge by removing trim then cartridge and install new one. They should carry your part at Home Depot. You will be back in business.

If it is all over the house try replacing the hot side nipple and supply line coming out of heater,that will usually take care of it. If not it could be build up in piping and you might need a repipe.

http://aw-sons.com/slow-hot-water-flow-in-shower/

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Q: Why does only the hot water in tub faucet flows out in slow trickle but the cold comes out fine?
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He turned on the faucet but only a trickle of water came out.


Use the word trickle in a sentence?

I watch the water from the leaky faucet trickle down.


Both hot and cold water in tub faucet flows out in slow trickle?

Your cartridges or cartridge must be bad or blocked with debris. Remove, clean and replace if necessary.


Why is there still a trickle of water in your kitchen faucet when main valve shut off - no trickle anywhere else?

Water is coming down from upstairs or it is back pressure from the water heater. If it is the water heater, it can come out of either side of the faucet.


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The house was so old that when you turned on the faucet, only a small trickle of water came out.


How do you get rid of calcium build-up in the copper cold water line if it has caused the cold water bathroom faucet to slow to a trickle?

its not the co.pper line its the faucet stem or angle stop


What should you do if you have good hot water pressure throughout your house except for the upstairs bathtub where it is just a trickle?

Replace the tub faucet.


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Is it bad to turn off your water overnight in the winter?

if the temperature where the water is coming out of the faucet is very cold then it is better to leave the water running very slowly like a trickle.


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Why would the faucet in the bathroom only trickle after a water main break was repaired?

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