4 Litre Air Coolers: What to Check Before You Buy

Runtime depends on the model, fan setting and evaporation rate. Use the maker’s stated operating time if available; tank capacity by itself cannot establish a reliable duration.

It may suit a bedroom when its airflow is directed towards the sleeper and its footprint fits. Check the maker’s room guidance and noise information before buying.

No. Evaporative coolers circulate air across water and work differently from an air conditioner, which removes heat from a room.

Look at refill access, cleaning instructions, speed settings, oscillation, timer and whether ice packs are included.