TCL 18000 BTU T3 Inverter Air Conditioner Heat & Cool TAC-18CHSA/XAF1I - This 18000 BTU model provides efficient cooling and heating for 20–35 m² spaces. A++ energy class and SEER 6.1 support energy-saving performance. R32 refrigerant and inverter system keep the temperature stable. 800 m³/h airflow delivers fast results in larger rooms. T3 compatibility ensures reliable operation in high temperatures.