Re: Water goes cold in shower, water pressure
There really is no way to fix the flush & freeze problem except to replace the shower valve with a pressure balancing type.
Originally Posted by DFB
Sometimes, you can improve the situation by using larger pipes: run 3/4" all the way from where it comes in the house to where it splits between the toilet and shower. (The idea is to not have the toilet & shower on the SAME 1/2" supply line.) The cold supply line from the main all the way to the water heater should never be smaller than 3/4", either. That isn't always foolproof, though, and may not work if your water pressure is less than 50 PSI.
You could also try a lower-flow showerhead.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.