What should be the limits of a product warranty?

[King Belieal]

For physical products, there are always warranties that act to assure the customers that they are covered. But a business must place a limit on the warranty it offers the customers.

What should be the limits of warranties given for physical products, say electronics?

 

[Augusta]

I think 36 months or 3 years should be an ideal time for any product to be fully functional for a user