Whole-Home Dehumidifier Cost

Know what extra moisture control really costs. Combine runtime, wattage, and your electric rate to surface monthly and seasonal energy bills so you can budget or justify upgrades like ECM blowers and smart controls.

Typical hours the dehumidifier runs in humid months.
Nameplate wattage or measured draw of the appliance.
Optional. Defaults to $0.15/kWh, roughly the U.S. average residential rate.
Optional. Defaults to a 90-day humid season.

Simplified energy estimate—verify with your utility bill or monitoring system if you need audited numbers.

Examples

  • 14-hour runtime, 780-watt unit, $0.17/kWh electricity, 120-day season ⇒ Daily energy use: 10.92 kWh • Monthly operating cost: $55.69 USD • Seasonal consumption: 1,310.40 kWh over 120.00 days • Seasonal electricity cost: $222.77 USD.
  • 8-hour runtime, 650-watt unit with default rate/season ⇒ Daily energy use: 5.20 kWh • Monthly operating cost: $23.40 USD • Seasonal consumption: 468.00 kWh over 90.00 days • Seasonal electricity cost: $70.20 USD.

FAQ

How do I find the actual watt draw?

Check the nameplate or plug the unit into a smart outlet/kill-a-watt monitor to capture the real-time load for better accuracy.

Does the runtime include fan-only cycles?

Use the hours when the compressor runs. Fan-only circulation typically draws much less power and can be modeled separately if needed.

Can I compare two dehumidifiers?

Yes—run the calculator twice with each wattage and runtime assumption to see the payback of upgrading to a more efficient system.

Additional Information

  • Result unit: U.S. dollars alongside kWh usage for transparency.
  • Season length helps homeowners compare different climate zones or shoulder seasons without editing formulas.
  • Electricity rate defaults to the U.S. average residential tariff but can be swapped for time-of-use pricing.

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