Currently running oil/forced air system. (38 yrs.old). Heat pump died this summer(19yr old Rheem). 99% convinced to put in New Electric furnace. Oil here is approx $2.75 US/gal & Elect is approx $.06/kilowhr. Question is wud a heat pump be a more efficient source of heat then an electric furnace or is it just a whole house air conditionner?? Any thoughts??