![]() Most AC systems have a filter somewhere that removes dust from the air so it doesn’t clog up the fans and evaporator fins. it sits in your window or has a tube connecting it to a window) the sticker will likely be on the outside of this all-in-one unit. You can use this information to find some help online for your specific device. Find a sticker on the unit that has the brand’s logo and displays the (sometimes lengthy) model number. It is shaped like a metal cube and has vents on the sides. You can usually find this information on the condenser unit located outside your building. The most widespread type of air conditioning without refrigerant is called an “evaporative cooler” or, more commonly, a “swamp cooler.” You can learn more about swamp coolers on this page from How Stuff Works.įor AC repair, you may need to find the brand and model of your air conditioner. Other systems work differently and require some different repair techniques. ![]() Not all air conditioning systems use refrigerants, but this page will only cover repair information for traditional systems. This steady shift towards even better chemicals continues today and the ozone layer is predicted to recover before the year 2100. After this effect was discovered in the 1970s and 1980s, CFCs were banned and replaced with more environmentally-friendly refrigerants. Since the ozone layer-a region in the Earth’s atmosphere filled with the chemical “ozone”-shields the planet from most of the sun’s damaging UV radiation, scientists predicted an increase in cancer in humans and skin damage to other animals like whales due to the ozone hole. CFCs released into the atmosphere severely damaged the ozone layer and ended up creating large holes in the layer near the north and south poles. Early refrigerants, called “ chlorofluorocarbons” or “CFCs” did their job well but caused significant environmental damage. The modern electric air conditioner utilizes a special chemical called a refrigerant to move heat from inside a space to the outside. Before Carrier’s invention, ice was often harvested and stored during cold months to cool the air in the summer. Over time, air conditioning became more common in houses and cars to improve the comfort of the people inside. The cooling effect of the machine also happened to increase worker productivity in the hot summer, so demand for this new invention quickly increased. You might not have known, but modern air conditioning was actually invented by Willis Carrier in 1902 to control the humidity of the air in a printing factory. Air conditioning (also called “AC” or “A/C”) is the process of controlling the temperature and humidity of air.
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