Central air conditioners need to be installed and connected to ductwork, and performance depends on the size and condition of your home, the climate where you live and other factors that make comparative testing impossible. Although no one tests central air conditioners, we found many helpful guides for choosing one. Experts say the major consideration [...]
Archive of entries posted on January 2010
How a Washing Machine Works
Washing machines get clothing clean by plunging the clothes through the water and detergent mixture. It is the motion that really helps to loosen dirt. In the old days, they used to beat wet clothes against a rock to get them clean. In top loading machines the agitator twists back and forth pulling the clothes [...]
How a Refrigerator Works
A refrigerator doesn’t actually cool things, it removes the heat from them. But then you probably don’t want a physics lesson. But you may wonder where the “cold” comes from. So here is a little bit more physics. When a gas goes from a state of high pressure to a state of low pressure, the [...]