Warranties
Warranty coverage for your new door is only as good as the company that a) manufactured your door, and b) installed your new door.
Therefore you should carefully choose both: the manufacturing company and Installation Company.
Different manufacturers offer different kinds of warranties. Most entry door companies offer lifetime warranty for the panel (slab) but not for the full-wood frame. If your goal is to have a worry free experience, buy the door from the company that offers lifetime warranty for entire door system, and if the door is factory finished try to find the company that will stand behind their finishing process the longest period of time.
The best door manufacturers such as ProVia, located in the heart of the Amish country – known for superb craftsmanship and attention to details – Sugarcreek, OH, offers lifetime warranty for their doors, including frames, and 7 or 10 year warranty for factory applied stain or paint depending on the door model. Generally the higher quality, and the more expensive is the door, the warranty tends to be better.