Many apartment residents use air conditioning units continuously during heatwaves to maintain comfortable temperatures. However, a common installation error can lead to significant conflicts with neighbors and financial penalties. These fines can reach up to 5,000 lei for those who fail to comply with building regulations. The issue is not related to energy consumption or noise levels produced by the device. Instead, the problem stems from how the external unit is installed and managed. Residents are urged to be mindful of the regulations governing shared spaces and building exteriors. Proper installation ensures both legal compliance and harmonious coexistence with neighbors.