Just buy another brand for less. They went so far as to Photoshop ‘enhance’ my warranty photos to increase contrast to support their claim, and they admit it.
My very expensive Tempur / Tempurpedic mattress is cracking all over on top after 8 years, and my wife can’t sleep in it. Tempur quickly voided the warranty claim saying it’s water damaged - after they ‘enhanced’ a single image, mostly highlighting shadows.
I think the memory foam bed is actually only good for 4-5 years depending how big you are and you local humidity. The warranty at 10 years is a total scam for anyone but tiny fairies living in a plastic bubbles. If they said “this lasts 5 year’s” sales would crater or cheap alternatives would win out. Instead they say ‘full 10 year warranty’ but Don’t honor it.
There is no water damage on my bed. Some slight soiling on the mattress cover where you lay (8 years, not washable) plus some shadows due to the window, and they say stained and water damage no warranty. ‘Enhanced’ my photo to make it look worse. Wouldn’t even look at additional photos or send someone out.
This one is tough. A longer warranty is a way to reassure customers that it’s made better, with the promise that it will be repaired/replaced if it breaks. And if they honor their warranties as promised, it’s probably valid. Warranty claims are expensive, regardless of industry, so they go to great lengths to minimize claims. Whatever the warranty is, you can reasonably be sure that it will last that long, but probably not a second longer. Again, assuming a trustworthy company that will honor the warranty.
Otherwise, anyone can shit in a box and mark it guaranteed. If it’s from Amazon/AliExpress, the company probably won’t even exist in 6 months (but a strangely similar new company will).
The flip side is that an unusually short/weak warranty, below that of its competitors, is almost certainly a shit product. They aren’t even going to pretend it’s up to industry standards.