How we test dehumidifiers

We test dehumidifiers in our accredited lab to see how they perform, how energy efficient they are, and how easy they are to use.

We’ve tested a range of dehumidifiers to see whether their marketing claims stack up.

Overall score breakdown

Our dehumidifiers test includes:

Water removal

We measure dehumidifier water removal rates over 24 hours across a range of temperatures and humidity levels typical of New Zealand conditions. We use the average to produce a water removal score, giving slightly more weight to the most challenging (coldest) conditions and less weight to the least challenging conditions.

Low temperature performance

We use the dehumidifier's water removal rate measured at 8°C and 90% relative humidity to issue a low temperature performance score.

Energy efficiency

We measure how much energy is used per unit of water removed to provide the dehumidifier’s energy efficiency score.

Ease of use

We assess each dehumidifier for ease of tank emptying, layout and readability of controls, clarity of instructions, cleaning and ease of moving.

Other

We calculate dehumidifier running costs based on 8 hours’ use a day. We record how much noise each dehumidifier makes. And we make a note of each dehumidifier’s features and specifications.

We've tested 22 dehumidifiers.
Find the right one for you.

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