I have a 55 year old house and I really want to update my pipes. Everytime I turn the shower on rust water comes out for the 1st 5 seconds, then from there clean water comes out. My question(s) is how many hours would it take to switch my pipes? I have a 2 story house but only use water on the main floor and in the basement. Any Advice would be helpful. I am a new (old) home owner. Thanks
Al