What should be primarily checked when installing an air conditioner on an old furnace?

When installing an air conditioner on an existing furnace, one of the most critical elements to assess is the integrity of the ductwork. Ductwork plays a vital role in distributing the cooled air throughout the space effectively. If the existing ductwork is not compatible with the air conditioning system, it could lead to inadequate airflow, reduced cooling efficiency, and increased energy consumption.

By checking ductwork integrity, you can identify issues such as leaks, poor insulation, or insufficient sizing that could negatively impact the performance of the air conditioner. Addressing ductwork concerns ensures the system operates efficiently and provides optimal comfort in the conditioned space.

While thermostat compatibility, fan motor horsepower, and air filter quality are important considerations in an HVAC system's overall functionality, ductwork integrity is paramount when integrating a new air conditioning system with an existing furnace setup. Ensuring that the ductwork is in good condition and properly sized will contribute significantly to the effectiveness of the air conditioning installation.