A:AnswerI think it is always wise to replace old hook ups. I did and now I don't have to worry for a long time. By the way the parts are not expensive and worth the peace of mind
A:AnswerIf it is to code yes. Otherwise they will change your pipes for you to bring it up to code. I think it is a good idea to have this done if you need it so that you will have no problems and no worries.
A:AnswerI am not sure of delivery charge maybe around 49$ unless its above a particular price. I chose to pick up my dryer from store to avoid the shipping.