Quick copper sizing question
I'm replumbing my house, have 1" into the house, 3/4" from the meter across the basement to the water heater, and am now running the branch lines to the bathroom and kitchen.
My run to the kitchen is about 15ft, then a 4 ft climb to the sink. The only fixture in the kitchen is the sink, but there will be a dishwasher eventually.
My question. Is there any reason to run a 3/4" branch to where the supply pipes head up to the main floor, or can I just run 1/2" from near the water heater?
I was gonna do 3/4" because I have the pipe for it, but then I got to thinking about how, for the hot run, I have to heat up the extra copper and the water takes longer to get from the heater to the faucet. So now I feel like maybe 1/2" is the way to go.
Also, a 1/2" to the utility sink/washing machine branches from the 3/4" coming off the water heater. Does the placement of the kitchen branch matter with regard to this branch? Before? After?
Ok, that wasn't really a quick question...