Energy-Efficient Air Conditioner Units

(4.5 Reviews)
  • Designed to move heat rather than create heat, they can be more than 100 per cent efficient in the sense that for every unit of electricity they use they can move some three to five units of heat into the room.
A room air conditioner's efficiency is measured by the energy efficiency ratio (EER). The EER is the ratio of the cooling capacity (in British thermal units (Btu) per hour) to the power input (in watts). The higher the EER rating, the more efficient the air conditioner.

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