ROOM AIR CONDITIONING

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Air conditioners sprout from windows in a building in New York on Sunday, September 9, 2012. Attractive pricing and smuggling of the illegal coolant HCFC-22 (freon) is making it difficult to phase it out. (© Richard B. Levine)
Air conditioners sprout from windows in a building in New York on Sunday, September 9, 2012. Attractive pricing and smuggling of the illegal coolant HCFC-22 (freon) is making it difficult to phase it out. (© Richard B. Levine)
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