Yes, it is possible to install an air conditioner in an existing home without ductwork. However, the process is more complex and may involve cutting into walls or ceilings to install the necessary ductwork. Alternatively, ductless mini-split systems can provide efficient cooling without requiring extensive modifications. Jerry Kelly Heating, Air Conditioning & Electrical can help you explore all available options to find the best solution for your cooling needs in Florissant, MO.