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Text File  |  1992-09-02  |  263b  |  8 lines
  1. Machine, run by electricity or other power
  2. source, that cools the interior of a building
  3. by removing heat from interior air and
  4. pumping it out or, conversely, heats the
  5. inside by extracting energy from the
  6. atmosphere or from a hot-water source and
  7. pumping it in.
  8.