Energy Performance Certificates (EPCs) are like the multicoloured stickers on new appliances. They tell you how energy efficient a building is and give it a grade from A (very efficient) to G (not very efficient) (inefficient). They will tell you how much it will cost to heat and light your home and how much carbon dioxide it will give off.

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An EPC also tells you what your energy efficiency rating could be if you made the suggested changes and shows you how to improve your rating in a cost-effective way. Even if you rent your home, you could still make some of the changes listed on the EPC. 

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After they are given out, EPCs are good for 10 years.