While it is possible to replace just the outside AC unit (also known as the condenser unit), it is important to consider a few factors before making this decision.
The outside AC unit and the indoor evaporator coil are designed to work together as a matched system. Replacing only the outside unit without considering the compatibility with the existing indoor components can result in performance issues and reduced efficiency.
If the current system is relatively new and the indoor components are in good condition, it may be possible to replace the outside unit while keeping the existing indoor components intact. However, it is essential to consult with a qualified HVAC professional to ensure compatibility and optimal performance.
In some cases, it may be more cost-effective and beneficial in the long run to replace the entire HVAC system, including both the indoor and outdoor units. This allows for improved energy efficiency, better performance, and warranty coverage on the entire system.
The decision to replace just the outside AC unit or the entire system depends on the specific circumstances, the age and condition of the system, and the advice of HVAC professionals.