U.S. residential electricity EIA data: July 2026 US average 18.3¢/kWh Updated
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Cooling · Idaho

How Much Does It Cost to Run a Dehumidifier in Idaho?

The short answer

A typical 500W dehumidifier costs about $0.07 per hour to run in Idaho, or $16.71 a month at 8 hours a day.

The estimate uses Idaho’s average residential electricity price of 13.7¢/kWh from EIA (July 2026) — 25% below the national average.

Source: U.S. EIA, July 2026 data · Updated

Dehumidifier cost by daily use in Idaho

Cost at 13.7¢/kWh, the Idaho average (EIA, Jul 2026)
Daily usekWh/monthPer dayPer monthPer year
1 hour/day 15.2 $0.07 $2.09 $25.06
2 hours/day 30.4 $0.14 $4.18 $50.11
4 hours/day 60.8 $0.27 $8.35 $100
8 hours/day 121.7 $0.55 $16.71 $200
12 hours/day 182.5 $0.82 $25.06 $301
24 hours/day 365.0 $1.65 $50.12 $601

Idaho vs other states

At typical use, a dehumidifier costs $200 a year in Idaho — $500 less than in Hawaii and $14.75 more than in Louisiana.

Idaho has the 6th-cheapest residential electricity of the 50 states and DC. Idaho price per kWh · all states ranked

Electricity price trend in Idaho

13.7¢/kWh in July 2026 — ▲ +11.8% from a year earlier.

How to lower the cost of running a dehumidifier

Dehumidifiers work like small air conditioners, using a compressor to condense moisture out of the air. Most home units draw 300–700W depending on capacity, and the humidistat switches the compressor off once the room reaches the target humidity. Basements in humid climates may need several hours a day in summer. ENERGY STAR models remove noticeably more water per kWh.

  • Set the humidistat to 45–50% — lower settings make it run much longer for little benefit.
  • Keep doors and windows closed in the room being dehumidified.
  • Clean the filter and coils regularly so the compressor works efficiently.

Questions

Frequently asked questions

How much does it cost to run a dehumidifier for 24 hours in Idaho?

Running a 500W dehumidifier for 24 hours uses about 12.0 kWh, which costs about $1.65 at Idaho’s average rate of 13.7¢/kWh.

How many kWh does a dehumidifier use per month?

At 8 hours a day, a typical dehumidifier uses about 122 kWh a month. In Idaho that costs $16.71.

Is it expensive to run a dehumidifier in Idaho?

Idaho has the 6th-cheapest residential electricity of the 50 states and DC at 13.7¢/kWh — one of the cheapest. Running a dehumidifier here costs about $200 a year at typical use, compared with $267 at the national average rate.

What is the electricity rate in Idaho right now?

The average residential electricity rate in Idaho was 13.7¢ per kWh in July 2026, according to the latest EIA data — up 11.8% from a year earlier.

Should I run my dehumidifier 24 hours a day?

Usually not. Set the humidistat to 45–50% and let it cycle on its own; it will only run as long as needed to hold that level.

Dehumidifier costs in nearby states

Cheapest and priciest states

Sources & method