Desiccant vs Compressor Dehumidifier

Desiccant vs Compressor Dehumidifier


Norm Pacific, a professional dehumidifier manufacturer, manufactures 300,000 pieces of Desiccant and Compressor Dehumidifiers for many different international brands each year. We have developed and designed dehumidifiers for over 20 years to win the reputation in the industry.


We are fully experienced in household appliances and have accumulated over 140 items for patent rights. We are particularly confident in the knowledge of Desiccant and Compressor Dehumidifiers.


How does Desiccant/Compressor Dehumidifier works?


Both Desiccant and Compressor Dehumidifier have their pros and cons and it all depends on where you use them.




Compressor Dehumidifiers work by using refrigerant to create a cold surface and when the warm and humid air comes into contact with the cold surface, the humid air would condense into water and reduce the humidity in the air.


However, when the environment is cooler and cold, for example, under 15 °C, the cold surface would frost and force the dehumidification process to stop for defrosting.


As a result, the dehumidifying capacity is greatly reduced.

However, Desiccant Dehumidifier works differently. It uses a desiccant wheel inside to absorb the moisture in the air like a sponge, then use an internal heater to resume the dryness of the wheel.


Therefore, desiccant dehumidifier will not frost inside. On the other hand, the heating process makes the air passing through the dehumidification wheel to be warm and dry and the unit can remain high efficiency under low temperature.


Also because there’s no compressor required, the unit is lighter and quieter than compressor dehumidifiers.


Desiccant DehumidifierCompressor Dehumidifier
Remains high performance even in low temperature (1~15°C)Only works efficiently in higher temperature
Slim and light weighted (5~9 kg)Heavy in size and weight (over 10kg)
Low noiseHigher noise
Heater included. Higher wattageLess power consumption
Increases room temperature about 3~5°C *Increases room temperature about 1~2°C
Preferred to be used under 1~25ºCPreferred to be used under 20~30ºC



Below is the comparison chart between 10L Desiccant and Compressor Dehumidifier. It might help you to have a better understanding before purchase.

Desiccant DehumidifierCompressor Dehumidifier
Capacity10 liter/day (27°C, 60%RH)10 liter/day (30°C, 80%RH)
Performance in 15°C8~10 liter/dayBelow 3 liter/day
Performance in 10°C8~9 liter/dayBelow 2~3 liter/day
Performance in 5°C7~8 liter/dayNo performance below 5°C and defrost required