Why do warranties exist?
Short answer
A product warranty is a promise from a maker or seller about what help it will provide if a product has a problem. It can explain what may be repaired, for how long, and who to contact. This helps buyers know what support to expect and lets sellers explain that support before a problem happens.
What can a warranty cover?
Imagine a kettle stops working during its warranty period. If it was used as instructed and the problem is covered, the maker may repair it for free.
But being within the time limit does not mean every repair is free. A warranty may exclude some causes of damage or ask you to pay for shipping. Check its terms and keep proof of purchase.
A warranty is not the only protection
A maker's warranty is one promise, with its own terms. Consumer law may also protect buyers when a product is faulty, but the rules differ by country.
In the United States, some protections are called "implied warranties": promises that can come from state law even when they are not written down. In the United Kingdom, some protections are called "statutory rights"—rights written into law. These are examples from those places, not rules for every country.
If something breaks
Check what the warranty covers, how long it lasts, and who to contact. Ask the seller or maker whether repair or shipping costs apply. For other rights, check an official consumer-help service in your country.