The comments came as the NEA introduces a new labelling system for electrical goods, with the most efficient products receiving a four-tick rating.
An energy-saving air-conditioner or refrigerator which is run over its entire lifespan can be up to 50 per cent cheaper than a less efficient counterpart, the NEA claimed.
The NEA said: "Debunking a common misconception that energy efficiency translates into greater costs, the study revealed that energy-efficient models are not necessarily the most expensive models available."
Meanwhile, the British Retail Consortium has called for VAT on energy-efficient appliances and technology to be dropped to encourage its widespread uptake.
The group claimed the current tax regime was stifling the industry.
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