Yep, my contractor guarantees for life. He's been around forever and has a good reputation.Check the warrantee, most vinyl are lifetime with 10 year on the glass. Anderson I think is only 10 year. Good luck.
IF you do not have to wrap any exposed wood with aluminum trim (if the house has siding on it now). If you take off storm windows there will be exposed wood.Consider DIY, replacing a window is a lot easier and quicker than most people realize.