Cost of Operation. A residential water heater contributes to as much as 30 percent of a household's energy cost-second only to the expense of a home's heating and cooling system. Selecting the right water heater-one that is efficient and the right capacity-can dramatically impact your monthly energy bill.
Use the following steps to force stop an application: 1  Open the Applications tab and tap Settings, and next tap Applications. 2  Tap Manage Applications. 3  In the list of running applications, select the application you wish to close and tap Force Stop.
Drag to Quickly Close an App. To completely close an app, press the Recent button, formerly the Menu button. A list of your recent apps appears at the bottom of the screen. Drag any preview icon up or down with your finger to close an app. To close all the apps, just tap the Close All icon.