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Free radon tool

Radon Fan Operating Cost Calculator

An active radon system runs its fan around the clock, so the electric cost is part of owning one. Enter your fan's wattage and your power rate to see what it costs per month, per year and over our 5-year warranty period.

Your numbers

Check the fan label. Most residential radon fans draw roughly 20-150 watts.
Find this on your utility bill.

Estimate only. Actual draw varies with fan model and system static pressure.

Estimated Yearly Cost

$78.84

Monthly Cost
$6.57
Energy Use (kWh/year)
526
5-Year Cost (warranty period)
$394.20

That's in the normal range for a residential radon fan. Glance at your manometer now and then. If the liquid in the U-tube is level, the fan may have stopped.

Radon fans run 24 hours a day, 365 days a year.

Old Fan Using Too Much Power?

We replace failing or inefficient radon fans across the Des Moines metro.

Your calculator result is sent with the form. Need help now? Call (515) 218-7447, 24/7.
The math

How the Fan Operating Cost Works

  1. 01

    Always on

    A radon fan has to run 24 hours a day, 365 days a year to keep suction under the slab. That's 8,760 hours of runtime each year.

  2. 02

    Energy use

    Fan watts × 8,760 hours ÷ 1,000 gives kilowatt-hours (kWh) per year, the unit on your utility bill.

  3. 03

    Cost

    We multiply yearly kWh by your rate. The national average is about $0.15 per kWh; check your bill for your actual rate.

Good to know

Fan Operating Cost Questions

How many watts does a radon fan use?

Most residential radon fans draw roughly 20 to 150 watts, depending on the model and how hard it has to pull. The wattage is printed on the fan label.

Can I turn my radon fan off to save money?

No. Radon levels climb back within hours once the fan stops. The system only works while it runs, which is why it's sized to run all the time.

When should a radon fan be replaced?

Replace it when it stops, gets noisy, or the manometer shows lost suction. Call us if your alarm goes off; our 24-hour line can book a fan check.

Still have a question?

Our support line answers 24 hours a day, 7 days a week.

(515) 218-7447 Send a Question
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Ready to Lower Your Radon Level?

Send your test result and foundation type, or call our 24-hour line. Every system we install is backed by a 5-year warranty.

Request a Quote Call (515) 218-7447
  • Iowa HHS credentialed
  • 5-year warranty
  • Post-mitigation test