Setting the AC temperature to 29 or 30 degrees Celsius is within the typical operating range of most air conditioning systems. It is a temperature range that many people find comfortable for cooling their indoor spaces. Therefore, there shouldn't be any inherent problems or issues associated with setting the AC temperature to those values.
However, it's worth noting that air conditioning systems have their limitations and capabilities. The ability to maintain a specific temperature may depend on factors such as the cooling capacity of the AC unit, the size of the room, the insulation of the space, and the outdoor temperature.
If the outdoor temperature is significantly higher than the desired indoor temperature, it may be more challenging for the air conditioner to cool the room to the set temperature. The cooling system may have to work harder and run for longer periods to achieve the desired cooling effect, which could increase energy consumption and potentially impact the system's longevity.
Additionally, if the temperature difference between the indoor and outdoor environments is too large, it can create condensation issues. Setting the AC temperature too low in a humid environment can result in excessive moisture removal from the air, potentially leading to uncomfortable humidity levels or condensation buildup on surfaces.
It's always a good idea to consider the specific conditions of the room, the capabilities of your air conditioning system, and your comfort preferences when setting the temperature. If you're unsure about the ideal temperature or have concerns about the system's performance, it's advisable to consult the manufacturer's guidelines or seek advice from a professional HVAC technician.