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WebAC can come in a number of forms, as long as the voltage and current are alternating. If we hook up an oscilloscope to a circuit with AC and plot its voltage over time, we might see a number of different waveforms. The most common type of AC is the sine wave. The AC in most homes and offices have an oscillating voltage that produces a sine wave. WebTo save energy and money, you should try to buy an energy-efficient air conditioner and reduce your central air conditioner's energy use. In an average size home, air conditioning consumes more than 2,000 kilowatt-hours of electricity per year, causing power plants to emit about 3,500 pounds of carbon dioxide and 31 pounds of sulfur dioxide. WebDELONGHI Pinguino PAC EM90 ECO Portable Air Conditioner. 4.6 out of 5 stars (5) £659.99 From £25.35 per month* Compare Delivery available. Collection not available. LOGIK LAC07C22 Portable Air Conditioner. 4.15 out of 5 stars (33) View product. LOGIK LAC07C22 Portable Air Conditioner. ethical issues with medical errors