Hi Manboy,
Yes … all manufacturers have a warranty on their mattresses and 10 years is a very common warranty term for a good quality mattress (the prorated part of a warranty isn’t particularly meaningful). In most cases … smaller manufacturers are actually more responsive to consumers and warranty claims than larger manufacturers because their name and local reputation is on the line while the major manufacturers are more responsive to corporate shareholders, investors, and maintaining profit margins than to consumers and most of their warranty claims are denied because of the warranty exclusions.
I would also keep in mind that knowing the quality of the materials inside your mattress is much more important than the length of the warranty and mattress warranties only cover defects in materials and construction and not the foam softening and the loss of comfort and support from the use of lower quality materials that is the most common reason people need to replace their mattress long before the warranty is expired. In other words … they have little to nothing to do with the useful life of a mattress (see post #174 here).
Phoenix