Extraction Rates
Refrigerator coil dehumidifiers can remove a larger volume of moisture per day than desiccant and they are used during the early stages of flood restoration. Extraction rates also depend on the make and model of dehumidifier, so check the manufacturers’ guidelines of extraction rates before buying.
Operating Temperature
Desiccant units operate efficiently in cold temperature conditions because the silica gel absorbs the moisture. On the other hand, refrigerant dehumidifiers have a decrease in water extraction at colder temperatures, as the dew point is harder to reach and condensation of moisture out of the cold air is more difficult to achieve.
Running Costs & Noise
Refrigerant units use less electricity, so the overall running cost is lower. However, the desiccant units are much quieter and uses compressors.
This should get you started on your research for which dehumidifier works best for you!