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It has not reach the mainstream news yet as one of their hot topics, but in the coming weeks you will be hearing more and much read more concerning the miraculous 2010 date established by the Clean Air Act as the day in which air conditioners involving freon (R-22) coolant may not anymore be produced. The reason for this is that it is commonly believed that other hydrochlorofluorocarbons and freon (HCFC) which are introduced into the environment contribute to the erosion of the ozone layer which protects the environment from increased ultraviolet radiation.
Irrespective of the personal beliefs of yours along these lines, the economic facts of these regulations is the fact that you can count on a boom in the cooling sector, and consumers are able to depend on the cost of freon going way up. The official time table from the EPA looks as this:

2010 – No creation and absolutely no importing of HCFC-22 and HCFC 142b, except to be used in equipment manufactured before 1/1/2010 (so no generation or importing for NEW technology that uses these refrigerants)

2015 – No generation and no importing of every HCFCs, except to be used as refrigerants in devices manufactured before 1/1/2020

2020 – No production and no importing of HCFC-22 and HCFC-142b

2030 – No generation and hardly any importing of any HCFCs
The coolant that has arisen in the industry to exchange Freon is known as Puron. It does not have the same ozone eroding features of HCFC, and also does a better job of cooling your home becuae it has to operate under a higher strain compared to freon. But because of the higher operating strain, home air conditioners that were produced to be used with freon coolant weren’t made to the higher strain specifications which are required for Puron.
Now, add in to the situation the economic situation which the planet is in, and the downturn in the US housing market and you will quickly see what is going to happen. Homes built with central air conditioning systems that are on the market won’t have the ability to sell unless they already have a fresh Puron system installed. It is going to be comparable to a house with a terrible roof on it. The latest roof won’t add to the value of the home, however, the home will be less like to sell without it.