When sourcing mobile coolers, prioritize the Cooling Capacity (measured in BTU or kW) and Airflow Volume (CFM/m³/h) to ensure the unit matches the space size. For evaporative models, check the Water Tank Capacity and Water Consumption Rate to determine refill frequency. For portable air conditioners, verify the Refrigerant Type (e.g., R32 or R290) to ensure compliance with environmental standards. Additionally, look for Variable Speed Controls and Noise Levels (dB) to ensure operational comfort in specific environments.