R22 refrigerant — the effects: what, who, where, when, why and how?

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R22 is a gas that is frequently used in air-conditioning systems and has been for some time. Unfortunately, it has also been identified as an ozone depleting hydrochlorofluorocarbon (HCFC). HCFCs have very high global warming potential. To put this into context, R22 has been rated as roughly 1,800 times more powerful than carbon dioxide.

The government has now banned the use of HCFCs in refrigeration and air-conditioning systems from 2015 in order to comply with the Montreal International Protocol.

As a huge number of air-conditioning systems up and down the country still use R22, the ban will have a major effect on air-conditioning costs for landlords and tenants alike…

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