Even a new, minimum efficiency air conditioner or furnace can be a significant jump in efficiency. The old furnace in your basement may only be originally rated at 60% to 70% AFUE. In order to comply with national regulations, furnaces manufactured today have to be rated at a minimum of 80% AFUE.
dipole - a pair of equal and opposite electric charges or magnetic poles separated by a small distance. couple - (physics) something joined by two equal and opposite forces that act along parallel lines. electric dipole, electric doublet - a dipole with equal and opposite electric charges.
Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia. Related to dipole: dipole moment, dipole molecule, dipole antenna, electric dipole, magnetic dipole. (dÄ«â²pÅlâ²) n. 1. Physics A pair of separated electric charges or magnetic poles, of equal magnitude but of opposite sign or polarity. 2. Chemistry A molecule having two such charges or poles. 3. Electronics An antenna, usually fed from the center, consisting of two equal rods extending outward in a straight line.