responding to
http://www.homeownershub.com/mainten...ed-703497-.htm
DA wrote:
7 LAMPSTICKS 7 FEASTS 7 AGES O wrote:

Is there a way to back flush or blow the pipes out.
Or, do I need to repipe? I now live in a cold water flat

You should be able to flush it out by reversing the flow. There's a good
chance it will work since the blockage is very recent. The debris will go
back into your brand new heater but there shouldn't be much of it - you'll
get rid of it next time you flush the heater in a few years.

* Shut down the heater, especially if it's electric
* Close the heater's cold water inlet valve
* Do *not* open the pressure relief valve
* Connect a garden hose to the drain valve at the bottom of the tank and
put the other end of the hose into a toilet or outside where noone can
come in contact with the hot water that will come out.
* Open the drain valve
* Go to the faucet that does not work and block it. If it has an aerator,
you can unscrew it, put a dime coin and screw it back. Else just wet a rug
and hold is against the faucet's outlet really tight.
* Open hot water, then cold water at the faucet, both all the way.
* It will probably take a just couple seconds of cold water entering the
hot water lines through the mixer in the faucet to push any
debris/sediment in the lines out. You should hear water rushing through
the faucet, hopefully not much of it fountaining all over the kitchen

--
* Close the cold water valve on the faucet but not the hot.
* Restore the faucet (i.e. remove the dime etc.).
* Close the drain valve on the heater, remove the hose.
* Open cold water inlet on the heater and watch the water bubble out of
the kitchen faucet. When the water flow becomes normal, close the hot
water valve.
* Turn the heater back on

That should do the trick.

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