Concerning Old House upgrades.
About 8 years ago a friend had me run new 3/4" CPVC water lines in the basement of his home built in 1816. From where the well line entered the house to where the second-floor lines came to the basement, and new lines to all basement and first floor plumbing.
It took about 180 running feet a 3/4" then the reduction for sink and toilet supply lines, a direct run to a special order 24" deep frost cock, to reach through the foundation wall!
Once I passed the split for the hot water tank, everything was run in nice straight parallel lines to the rear of the house and Tee across the back of the house. I plumbed a nice potting table, washer, the mentioned frost cock ant new raisers to the kitchen sink.
What I cut out was a rat's nest of the worst armature plumbing I ever saw! The pipe size jumped up and down multipul times and there was a 3/8 line that used compression fittings that was a 3 or 4 loop to the kitchen sink!
When I finished with a new Kitchen Faucet, and bled the air out of the lines, I ask the Lady of the house if she wished to try out the Plumbing? She walked to the kitchen faucet turned on 100% full hot water! After 15 seconds she stuck her hand in and jerked it back out! She just stood there with tears running down her face! I as concerned she had burnt herself! But then with a huge smile she reached up and gave me a hug. They had lived in the house for 16 years and the kitchen water had always been a trickle, and it never got hot in less than 5 minutes. Now it was what she always wanted.
I love making the Lady of the house (any house) have a smile!
Ivan