How Much Does a Dehumidifier Cost to Run?
A dehumidifier costs approximately $173/year to run at $0.16/kWh. That is $14.40/month or $0.096/hour.
💰 Dehumidifier Running Cost Calculator
Based on 600W rated power. Actual varies by model and usage.
Dehumidifier Cost at Different Rates
| Rate | Monthly | Annual |
|---|---|---|
| $0.08 | $7.17 | $86 |
| $0.10 | $9.00 | $108 |
| $0.12 | $10.83 | $130 |
| $0.16 | $14.42 | $173 |
| $0.20 | $18.00 | $216 |
| $0.25 | $22.50 | $270 |
| $0.30 | $27.00 | $324 |
| $0.35 | $31.50 | $378 |
Electricity cost to run a Dehumidifier
A typical Dehumidifier draws 600 watts when running and operates roughly 12 hours per day on average. That works out to 7.20 kWh per day, 90 kWh per month, and approximately 1,080 kWh per year.
At the US-average residential rate of 16.4 cents per kWh (EIA April 2026), the Dehumidifier costs roughly $173 per year to operate. In cheap-power states like Idaho or Washington at 11 cents, it is closer to $130. In expensive states like California or Massachusetts at 30 cents, it climbs to $270. In Hawaii at 41 cents per kWh, the annual cost is approximately $445.
Annual cost by state rate
| Rate scenario | Rate (c/kWh) | Annual kWh | Annual cost |
|---|---|---|---|
| Idaho, Washington (cheapest) | 11.0 | 1,080 | $119 |
| Texas, Florida | 14.0 | 1,080 | $151 |
| US national average | 16.4 | 1,080 | $173 |
| New York, Connecticut | 25.0 | 1,080 | $270 |
| California, Massachusetts | 30.0 | 1,080 | $324 |
| Hawaii (most expensive) | 41.2 | 1,080 | $445 |
EnergyStar vs standard model
An EnergyStar-rated Dehumidifier typically uses about 30 percent less energy than a standard model. That translates to roughly 756 kWh per year instead of 1,080, saving $52 per year at US-average rates. Over a typical 10-year service life, that is around $520 in saved electricity, which usually outpaces the upfront price premium for the efficient model.
Why this is a major load on your bill
Because the Dehumidifier runs continuously (three or more hours at a time) at 600 watts, it contributes meaningfully to total household consumption. A typical US home uses about 10,800 kWh per year (EIA RECS), so this single appliance accounts for roughly 10.0 percent of total household electricity use. Worth focusing on for efficiency upgrades.
Frequently asked questions
How much electricity does a Dehumidifier use?
A typical Dehumidifier uses about 7.20 kWh per day running 12 hours at 600W. That works out to roughly 90 kWh per month and 1,080 kWh per year. Your actual use will vary with how often you run it.
How much does it cost to run a Dehumidifier per month?
At US-average electricity rates (16.4 cents/kWh), running the Dehumidifier costs about $14.76 per month. In low-rate states it can be as little as $9.90; in high-rate states like California, expect closer to $27.00 per month.
What is the annual cost of running a Dehumidifier?
Annual operating cost at US-average rates: approximately $173 per year. The range across US states is roughly $108 (cheapest) to $445 (Hawaii). An EnergyStar model saves about $52 per year compared to a standard model.
How can I reduce the cost of my Dehumidifier?
Upgrade to an EnergyStar-rated model, savings of about 30 percent (around $52/year). Reduce daily runtime, every hour cut saves about $36 per year. On time-of-use rate plans, shift operation to off-peak hours to capture lower rates. Check whether your utility offers a time-of-use plan that aligns with this appliance use pattern.
What watt rating should I expect for a Dehumidifier?
Typical running wattage for a Dehumidifier is around 600 watts, with brief startup peaks of up to 1,800 watts. Specific models vary; check the nameplate label on your unit for exact figures. Common variation is plus-or-minus 20 percent of the typical value.
Dehumidifier Energy Usage Explained
A dehumidifier consumes 600W. At 12 hours/day for 150 days/year, that is 1,080 kWh annually, about 10.3% of average US household usage (10,500 kWh).
How to Calculate Running Cost
Cost = (Watts ÷ 1000) × Hours × Rate
For your dehumidifier: (600W ÷ 1000) × 12 hrs × $0.16/kWh = $1.15/day.
Tips to Reduce Costs
Use time-of-use electricity plans for off-peak rates ($0.05–$0.10/kWh overnight). Upgrade to Energy Star certified models. Use smart plugs or timers. Check rates in your state with our Electricity Cost Calculator.
Disclaimer: Estimates based on rated wattage. Actual consumption varies by model, age, and usage patterns.