As a rule, air conditioning units have to work longer in order to efficiently cool a house, especially if it’s excessively hot. Some homeowners make the mistake of turning their AC units off when they’re away and then expect the units to perform as well as before when they come back home. The truth is, when you turn off the AC, indoor temperatures will continue to rise. By the time you get home, your air conditioner will actually be consuming more energy in an effort to cool down your intensely hot rooms, causing your utility bills to skyrocket. If not corrected, this practice can even lead to unit failure or untimely calls to air conditioning companies for repair.