My Texas house is pier and beam construction. It was fine for old Texas weather. Now that we have to deal with more severe cold weather. the water lines that run under my house are susceptible to freeze. This is the second time I have had to replace the PVC piping. I feel that it is well worth the investment. To have it installed by a plumber they want between 3000 and 5200 dollars. I spent about 350 dollars and four hours under the house. YouTube is a great source for information and installation. It does require very specific procedures for a successful job but totally doable.