Which type works best in a cold conservatory or utility room?
For rooms routinely below roughly 10°C, consider a desiccant machine first. For rooms kept warm by the central heating, a compressor normally offers lower electricity consumption for a similar amount of moisture removed. Between 10°C and 15°C, compare each actual model rather than following a fixed temperature rule.
Look beyond a 20L label. The headline rating is often measured in much warmer, wetter air. An 8L desiccant can outperform a 20L compressor at 10°C even though the numbers on the boxes suggest the reverse.
Meaco manufacturer tests at matching humidity
Model and room condition
Water per day
Active watts
DD8L Pro desiccant · 10°C / 60% RH · fan 3
6.89L
630W
Arete Two 20L compressor · 10°C / 60% RH
3.35L
176W
DD8L Pro · 20°C / 60% RH · fan 3
7.97L
623W
Arete Two 20L · 20°C / 60% RH
8.50L
207W
Measured manufacturer extraction under controlled conditions, not laundry drying test results. DD8L Pro figures use the highest fan setting. Electricity draw is while actively running, not a daily average.
Rated to operate from 1°C. Laundry mode, a 2-litre tank and three fan settings. The highest setting extracts considerably more water at 10°C than the tested compressor but needs 630W while active at that condition.
Trade-off: stronger cold-room extraction versus higher hourly electricity demand and fan noise.
Meaco publishes 8.50L/day at 20°C / 60% RH and 207W. In a 10°C room it drops to 3.35L/day and 176W. It is rated to operate down to 5°C, but that does not imply strong extraction at 5°C.
Trade-off: potentially cheaper moisture removal in a heated room, but reduced speed in the cold.
This compressor was listed out of stock at Meaco on 24 October 2026. Tracked Awin link for stock and specification checks; do not assume immediate availability.
What about tracked Amazon products?
Our only tracked Amazon Sellers dehumidifier is the AEOCKY 25L-labelled compressor pictured below. It could be worth considering for a heated room, but we cannot recommend it for an unheated space until its extraction at 10°C is verified. The Meaco models remain independent specification benchmarks; Meaco's newly approved Awin programme now allows tracked manufacturer links. The DD8L Pro was available when checked, while the Arete Two 20L was out of stock.
If damp comes from a leaking roof or wall, repair that problem; a dehumidifier cannot correct it.
Will a desiccant dehumidifier heat the room?
It releases warmth as it runs, but should not be treated as a replacement for appropriate room heating. Include the higher input wattage in your cost estimate.
Do I need the 20L model in a small cold room?
Not automatically. Room moisture, temperature and speed matter more than floor area alone. A 12L compressor may be adequate in a normally heated flat; see our small-flat guide.
