And the PE firms tend to "lose records" of long term warranties after they buy out the company. That happened to me once witha HVAV company. Inhad a HVAC system blow the coils after 3 years. 1yr labor / 10 yr parts means little when the parts are $1k but the labor is $5.
It was a builder grade HVAC that was poorly sized for the house anyway so I replaced everything. I insisted that anything inreplacee it with was 10 yr parts AND labor warranty though, including all materials like the refrigerant.
Got everything in writing, bought and installed a new system, loved it. Shortly after PE bought the company. A year later coils blew (muly luck sucks). Tech comes out, quotes me the labor and refrigerant cost to fix and trys to sell me a new system. Point out I have a 10yr warranty for all. He calls his manager who "can't find any record" of a warranty like that.
I pulled the paper out of my file system, made a copy, and said he could send that to his manager. To their credit they did honor it after but how many people really keep their warranty docs handy?