[l2ridehd]

These are just someone’s attempt to put a number to something and has very little to do with reality. Probably worth checking if you exceed those time lines, but does not mean to replace it. If properly maintained and repaired when needed most things will exceed those guidelines. And in some cases by a lot. And yes there will be those that break down sooner. My AC is 16 years old and still works great. I have it serviced every year and expect it to last 25 years. I except my roof to last 25 years and will never let some door to door solicitor inspect it for free. They will go up and cause damage and show you pictures of a damaged roof they took elsewhere just to sell you a new roof. If it doesn’t leak, don’t replace it. If it does leak, repair it before replacing it. Same with almost everything on that home inspectors hit list. Lists like this is why you can hire 10 home inspectors and number 10 will still find something even after you fixed everything from number 1 through 9.