Adjustable base warranties can vary in length from just a few weeks to well over two decades. The warranty is an indicator of how long the manufacturer expects their product to last and how much faith they have in it. That means you should be highly suspicious of any warranty that’s under a year. But the ideal warranty length is at least 10 years.
However, the warranty length is not the only thing you need to consider. You’ll want to read your warranty’s fine print to ensure there aren’t a bunch of loopholes that allow the manufacturer to wriggle out of offering coverage. You’ll also want to be aware of what your warranty covers.
All warranties should cover manufacturer defects such as errors or premature aging. But if a warranty’s fine print eliminates virtually all coverage, it doesn’t matter how long its coverage lasts. Keep in mind that some warranties also offer coverage that becomes much more limited after a certain period of time without actually expiring.