One of the biggest advantages of a heat pump over a standard heating ventilating and air conditioning (HVAC) unit is that theres no need to install separate systems to heat and cool your home. Heat pumps also work extremely efficiently, because they simply transfer heat, rather than burn fuel to create it.

HowStuffWorks got its start in 1998 at a college professors kitchen table. From there, we quickly grew into an award-winning source of unbiased, reliable, easy-to-understand answers and explanations of how the world actually works. Today, our writers, editors, podcasters and video hosts share all the things were most excited to learn about with nearly 30 million visitors to the site each month.

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Need advice, how-to tips or just want to know how all your computer and …

On Atlantas metro system (the MARTA) you might encounter a man who bills …

To achieve the maximum lifetime for your radiator, its important to have the …

Theres an old-school beauty to the United States census.Every 10 years since 1790, the country takes a national headcount. That first census, required by the U.S. Constitution and instituted by President George Washington, counted fewer than 4 million people. The most recent census, in 2010, recorded 308.7 million men, women and children of dazzling diversity.

How Dual-clutch Transmissions Work. Most people know that cars come with two …

With Gabe Doran, Mike Senese, David Heber, Jimmie Oxley. HowStuffWorks is about the stuff that makes the world go round. Its truly incredible to see the ingenious lengths people go to in order to extract rubber and iron, corn and wheat, and water and salt from the earth. Equally amazing is the number of different and varied products that can be derived from something so fundamental.

In this article, well take a quick look at each of the existing or emerging fuel-cell technologies. Well detail how polymer electrolyte membrane fuel cells (PEMFC) work and examine how fuel cells compare against other forms of power generation.Well also explore some of the obstacles researchers face to make fuel cells practical and affordable for our use, and well discuss the potential

The Money Channel contains articles that answer all of your financial questions. …