💧 Dehumidifier

How much electricity does a dehumidifier use? Cost per day and month

Dehumidifier electricity use by capacity, cost per day and per month, and tips to run it less.

Typical power

280 W

Cost per hour

$0.05 · £0.073

Per year · 336 kWh

$60 · £87

With 8 hours a day for 150 days a year, electricity at $0.18/kWh and £0.26/kWh all-in.

A home compressor dehumidifier draws 180–550 W. Running 8 hours a day, a mid-size unit uses about 2.4 kWh a day.

Desiccant models use more but work well below 15 °C, where compressor units struggle: they suit cold basements and garages.

Consumption compared

TypeUsagekWh/yearCost/year
Small, 10 litres a day180 W216$39 · £56
Medium, 20 litres a day300 W360$65 · £94
Large, 30 litres a day550 W660$119 · £172
Desiccant600 W720$130 · £187

Yearly cost with 8 hours a day for 150 days a year.

Work out your cost

Per hour
$0.05
Per month
$5.04
Per year
$60
Energy per year
336 kWh

The price is a typical all-in figure for your country: replace it with yours (bill total ÷ kWh).

How to use less

  • Set humidity to 50–55%: lower isn’t needed and costs more.
  • Keep the room’s doors and windows shut while it runs.
  • If damp comes from leaks or thermal bridges, a dehumidifier treats the symptom: the fix is insulation.
Lower-energy modelsCompare prices and energy labels on AmazonAmazon ↗

FAQ

How much electricity does a dehumidifier use?
About 280 W, or 0.3 kWh for each hour of use; from 120 to 700 W depending on the model.
How much does it cost per year?
With 8 hours a day for 150 days a year it uses about 336 kWh a year: about $60 · £87 at $0.18/kWh and £0.26/kWh.
How can I reduce it?
Set humidity to 50–55%: lower isn’t needed and costs more. Keep the room’s doors and windows shut while it runs.

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