I will never, ever, ever, ever, ever, ever allow repair cpvc again. I have a very long, painful exprience with cpvc that I have shared in the past but suffice it say that Dr. B is absolutely correct in his post.
I have learned the hard way that if you find one broken CPVC line under your home that is likely caused by freezing then there are dozens more. These pipes split under freezing conditions. Instead of just one spot breaking the entire stalk may split in one, hidden crack from fitting to fitting. I started out replacing that stalk, turned on the water and then found the next. This went on for days in terrible and cold conditions. I finally got it all fixed after essentially replumbing the entire double wide one split at a time but the worst part is that is now re-plumbed with … you got it… CPVC!
I only use PEX now with an occassional Schedule 40 PVC (not to be confused with CPVC) to act as a transition where the water comes out of the ground from the main line.
I can replumb an entire home for a few hundred dollars worth of PEX tubing and then fittings. I do the work myself. I buy the fittings at a plumbing supply store (I cried when I found out how much cheaper they are then lowes). Lowe’s and home depot charge almost $2 or more for some fitting where I can buy them for 1/4 of the price or more when buying in bulk at the plumbing supply store.
The PEX tool is expensive (about $135) but well worth it. DO NOT BUY THE PEX TOOLS AT HOME DEPOT OR LOWES! Those tools are too big to use in mobile homes. They are close to bolt cutters in size. You need to buy the smaller, hand sized ones for sale at the plumbing supply stores and online.
Even when I paid a professional handyman service some years ago to replumb a sinlgewide with PEX they charged about $1,200 and were done in about a day.
I now do it myself for less than half of that and I do it the way I want it done.
I have even replumbed some homes by moving all of the lines inside the home so that I would never have to crawl under the home again. I created a chase type box along the edge of the ceiling and wall and ran the main lines from one end of the home to the other (where water was needed) and then came off of that to supply toilets, baths and sinks. No one knows what in that box even if they notice it.
Now the tenant will immediately notice if a leak is occurring and I can stand in the warmth of the home to repair it instead of laying in a cold puddle under the home to repair it.
I also find that if the tenant has heat, I have no leaks!