If either your interior or outdoor air conditioning unit needs to be replaced, you might wonder if the tonnage of the two units should be the same. It may be less expensive to install a smaller unit, but will it work? Can the indoor and outdoor units have various tonnages? Many people know that an air conditioner has two parts: an interior and an outside unit. This may persuade homeowners to save money by replacing one with a different tonnage unit. Experts for air conditioning installation in Aransas pass say that this is not a good idea, despite the immediate savings.