Before the late 1980s, chlorofluorocarbons (CFCs) were the main coolants used in our fridges, they created a big problem in that they helped in the damage to the ozone layer which led to there ban.
Hydrofluorocarbons (HFCs) were next and they were no good, basically causing the same problem as CFCs also increasing global warming.
Greenfreeze an ozone friendly cooling technology was created by greenpeace working with scientists. Greenfreeze fridges use hydrocarbons for blowing of the insulation foam and the refrigerent and are free from global warming chemicals.
The next time you are looking for a fridge ask your supplier if they have appliances if the use environmentally friendly Greenfreeze technology.
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I'm Gary Mason and I share tips and ideas for those interested in going green. My blog is about taking steps towards living a green lifestyle in order to protect the environment. I am doing my part to spread the word, have some fun and promote the benefits of living sustainably. 
It is useful to try everything in practise anyway and I like that here it’s always possible to find something new.