Energy efficiency is a key tool to fight against climate change as it can reduce greenhouse gas emissions from fossil fuels. Something is more energy efficient if it delivers more services for the same energy input, or the same services for less energy input. Energy efficiency can also provide massive savings for individuals, households, businesses and the world economy.
This infographic from Window & Door Guys looks at energy efficiency in buildings.
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Co-founder and Vice President of SearchRank, responsible for many of the day to day operations of the company. She is also founder of The Arizona Builders' Zone, a construction / home improvement portal.