Collection: Evaporative Coolers

Evaporative Coolers — Energy-Efficient Cooling for Dry Australian Climates

Evaporative coolers — also known as swamp coolers or evaporative air conditioners — use the natural process of water evaporation to cool and freshen the air. They are significantly cheaper to run than refrigerative air conditioning, making them a popular choice for Australian homes in dry inland regions including Melbourne, Adelaide, Perth, and regional New South Wales.

Ozbuyz stocks a wide range of portable evaporative coolers from brands including POLYCOOL and Devanti. All units ship fast Australia-wide with our 30-day returns guarantee.

How Do Evaporative Coolers Work?

Evaporative coolers draw warm outside air through water-soaked pads or filter media. As the air passes through the wet media, water evaporates and absorbs heat — dropping the air temperature by up to 10–15°C before it’s circulated into your home. Unlike refrigerative ACs, evaporative coolers also add moisture to the air, which can make hot, dry days feel much more comfortable.

Benefits of Evaporative Cooling

• Low running costs — Evaporative coolers use up to 75% less electricity than refrigerative ACs
• Fresh air — They continuously circulate fresh outside air rather than recycling stale air
• No harmful refrigerants — Environmentally friendly and safe for the whole family
• Simple maintenance — Just keep the water tank filled and clean the filter pads regularly
• No installation required — Portable units simply plug into a standard power point

Choosing the Right Evaporative Cooler

For smaller rooms and personal use, a tabletop evaporative cooler or personal fan unit works well. For larger rooms or commercial spaces, a tower or box-style evaporative cooler with a larger water tank and higher airflow rating is recommended. Check the airflow rating (measured in m³/hr or CFM) and match it to your room size for best results.

Frequently Asked Questions

Are evaporative coolers effective in humid climates? Evaporative coolers work best when the outside air is hot and dry. In humid coastal areas like Sydney, Brisbane, or Darwin, a refrigerative air conditioner or portable AC is more effective.

How much water does an evaporative cooler use? Most portable evaporative coolers use between 1–4 litres of water per hour depending on the temperature and humidity level.

Can I use an evaporative cooler in a room with no windows? Evaporative coolers work best with good ventilation. A slightly open window or door allows warm air to escape, improving efficiency.