This paper addresses a number of questions regarding the energy performance of residential appliances, water heaters and space conditioning equipment including the changes in the efficiency and energy consumption of new models during the past decade, the technologies used to achieve higher levels of energy efficiency, and the potential for further technical improvements. It is shown that there have been major improvements in the energy efficiency of all product types. For some products (eg., refrigerators), the average efficiency of new models has significantly risen during the past decade. For other products (eg., water heaters), major savings are possible through the purchase and use of the more‐efficient models now available. A large assortment of technologies have been utilized to achieve greater efficiencies and further improvements are under development in many areas.

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