> The only issue in terms of water pressure is whether it will get up to
> the heater. If it gets there, it will be fine. Now whether there will
> be any other issues (water heater in an uninsulated space, adequate
> venting if it's gas, fire safety) depends a lot on the situation up in
> the attic and your local building codes.
I agree with Chris, but also consider that all water heaters eventually leak.
That's why code in most places requires a catch basin or hard floor with drain
under hot water heaters. Code will likely also require a T&P (temperature and
pressure) relief valve that should be tested periodically, and needs a drain.
The heater itself should be partially drained occasionally, to remove the
sediment buildup in the bottom.
Randall
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