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Costway 4-in-1 Evaporative Air Cooler: What to Check

Costway lists four functions, a water tank, modes and remote control. Check the exact listing because specifications vary by version.

The Costway 4-in-1 evaporative air cooler is described by its maker as a fan, cooler, humidifier and air purifier. Those labels describe functions; evaporative cooling adds moisture and is not compressor air conditioning. For one portable model Costway lists a 2.6-gallon tank, three modes, three speeds, oscillation and a timer.

Costway 4-in-1 Evaporative Air Cooler: What to Check

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Common questions

Questions before you buy

What does 4-in-1 mean on the Costway cooler?

The manufacturer describes fan, evaporative cooling, humidification and air-purifying functions. It is not a compressor air conditioner.

How much water does the portable Costway model hold?

The cited portable listing specifies a 2.6-gallon tank. Check the exact version you intend to buy.

Does the Costway 4-in-1 cooler need a window hose?

Evaporative coolers generally do not use an exhaust hose, unlike portable air conditioners. Follow the specific manual.

Is the Costway cooler suitable for humid climates?

Evaporative cooling tends to be less effective when the air is humid.