Compressor vs Desiccant Dehumidifier: Which Should You Buy?

By the Dry Dwell editorial team · Updated 2026 · How we test & score

The single biggest choice when buying a dehumidifier is compressor versus desiccant. They remove moisture in completely different ways, and the right one depends on where and how you will use it.

How they differ

A compressor (refrigerant) dehumidifier cools a coil so moisture condenses out of the air, like a fridge. A desiccant dehumidifier passes air over a moisture-absorbing wheel that is then gently heated to release the water. That difference drives everything else: efficiency, cold-room performance, weight and noise.

Where each wins

Compressor models are the most energy-efficient in normal heated rooms, making them the default for living rooms and bedrooms. Desiccant models keep working in cold spaces below about 15°C, where compressors lose efficiency, so they suit garages, conservatories, boats and unheated rooms. Desiccants are also lighter and run at a steady, quiet hum, but use more electricity in a warm room.

Which should you buy?

If the dehumidifier will mostly run in heated parts of the house, choose a compressor model for lower running costs. If it needs to dry a cold garage or conservatory, or you want the lightest, quietest option, choose desiccant and accept the higher power use.

Our top picks

Frequently asked questions

Is desiccant or compressor cheaper to run?

Compressor models are cheaper to run in a warm room. Desiccant models use more electricity because of their heater, but can be the more effective choice in the cold.

Which is quieter?

Desiccant models tend to run at a steady, quiet hum with no compressor cycling on and off, which some people find less intrusive overnight.

Bottom line

Our top pick is the Meaco MeacoDry ABC 10L (our score 9.6/10) - A practical dehumidifier (10 litres/day) for keeping humidity down and preventing mould and condensation..