If you heat with electricity, a heat pump can trim the amount of electricity you use for heating by as much as 30% to 40%. High-efficiency heat pumps also dehumidify better than standard central air conditioners, resulting in less energy usage and more cooling comfort in summer months.bsorption heat pumps use heat as their energy source, and can be driven with a wide variety of heat sources. For more information on these specific types of heat pumps, go to: 1  Air-Source Heat Pumps. 2  Ductless Mini-Split Heat Pumps. 3  Geothermal Heat Pumps.
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(See form buttons in the HTML Tutorial.) The action of the form is the program you want to run, in this case, the main page. The next line makes the input type of the form an image: input type= image src= home.gif onclick= alert('Don\'t forget to press the back button to return!') width= 72 height= 41 /.oing it with images. Click on the house and see what happens! On my computer an alert message occurs reminding me to press the browser's back button to return to this page. When I click on OK the index page opens. Here is the code: