Technical Advice
Extraction Rates

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You cannot assume that all compressor dehumidifiers have the same relationship between the published high extraction rates and what is typical UK condition extraction rates.

The following table shows the relationship between Maximum water extraction rates in the UK and published maximum water extraction rates for compressor dehumidifiers.

The following table shows you the relationship between Tropical Conditions, UK Conditions and the dehumidifier rating you need.

Number of people in household 0 1 2 3 4 5
Maximum water extraction in UK conditions (litres) 0.5l 1.0l 1.5l 2.0l 2.5l 3.0l
Maximum water extraction in UK conditions (pints) .3/4 1.3/4 2.1/2 3.1/2 4.1/3 5.1/4
Published maximum water extraction rating compressors 12 litres 12 litres 18 litres 18 litres 21 litres 25 litres

Comparison of Ebac published maximum water extraction with UK expected extraction

Number of people in household 0 1 2 3
Published maximum extraction rates Ebac dehumidifiers 12 litres 15 litres 18 litres 21 litres
Maximum Extraction Rate Required winter UK Conditions - Occupied home 2 litres 2.5 litres 4 litres 5 litres
Maximum Extraction Rate Required winter Conditions - Unoccupied home 0.75 litres 1 litre 1.25 litres 1.5 litres

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