In most cases, it is not recommended to purchase a separate indoor unit of a split AC separately, as the indoor unit and outdoor unit of a split air conditioning system are designed to work together as a matched set. Split ACs are called "split" because they consist of two separate units: the indoor unit (evaporator) and the outdoor unit (condenser). These units are connected by refrigerant lines and electrical cables to facilitate the transfer of heat and cooling between them.
The indoor unit is responsible for cooling the air inside the room, while the outdoor unit dissipates the heat collected from the indoor unit to the outside environment. Both units are designed to have specific cooling capacities and efficiency ratings that are compatible with each other.
If you were to purchase a separate indoor unit without the matching outdoor unit, it would not function as a complete air conditioning system. Even if you somehow managed to find a compatible outdoor unit, there could still be issues with compatibility, performance, and warranty coverage.
In the event that you need to replace your indoor unit due to a malfunction or damage, it's best to consult with a professional HVAC technician or the manufacturer to find the appropriate replacement unit that is compatible with your existing outdoor unit.
Additionally, some manufacturers may offer complete split AC systems, including both indoor and outdoor units, as a single package. This ensures that the units are properly matched and designed to work together efficiently.
If you are considering purchasing a split AC, it's advisable to buy a complete set from a reputable brand or dealer to ensure proper functionality, performance, and warranty coverage. Proper installation and regular maintenance by qualified professionals are essential to getting the best performance and longevity from your split AC system.