Explain Warranties- Liability in Practice

Liability in Practice
Scenario 1: SuperKool is a company that makes air conditioners and sells them out of its SuperKool stores. SuperKool also sells used air conditioners of its own brand, which the company identifies as selling "as is" with no express warranty. For the new air conditioners that SuperKool sells,
1) What types of statements, duration, and disclaimers would be typical to put in its express warranties and explain why.
2) What other types of warranties might apply under statute or common law?
3) For the used air conditioners, does the "as is" label absolve SuperKool of all liability if something goes wrong with the air conditioner after purchase?

Scenario 2: What kind of liability does SuperKool have in the following situation?
An elderly customer buys a new air conditioner and installs it himself, but does not notice that after a month the air conditioner has stopped blowing cool air. Two months after installing the air conditioner, there is a heat wave and the customer dies of a heat stroke in the room in which the air conditioner was installed.