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Radon mitigation cost in Vermont (2026)

The Vermont Department of Health estimates $1,500 to $2,500 to install active soil depressurization, the common vent-pipe-and-fan system for radon in air, and around $7,000 for an HRV or ERV.⁠1 For radon in well water, it estimates around $7,000 for aeration and around $2,000 for a carbon filter, which it discourages.⁠1

Health Department cost estimates

  • Radon-resistant new construction Building new

    $250 to $750⁠2

  • Active soil depressurization (ASD) Radon in air

    $1,500 to $2,500⁠1

  • Granular activated carbon (GAC) Radon in water; discouraged by the Health Department

    Around $2,000⁠1

  • HRV or ERV Radon in air; estimate is for when no extra ducting or electrical work is needed

    Around $7,000⁠1

  • Aeration Radon in water

    Around $7,000⁠1

The Health Department’s installation cost estimates on one scale, from its Fixing Radon fact sheet (January 2024) and Building Radon Resistant fact sheet (June 2025).⁠12 Bars show a range; dots show an “around” figure. These are estimates, not quotes.
SystemUsed forEstimated cost to install
Active soil depressurization (ASD)Radon in air. A vent pipe and a fan reduce the amount of radon that enters the home; it works with many foundation types.⁠1$1,500 to $2,500⁠1
Heat or energy recovery ventilator (HRV or ERV)Radon in air. Best for moderate levels or to supplement an ASD system.⁠1Around $7,000 when no additional ducting or electrical work is needed⁠1
AerationRadon in well water. A fan mixes the water with air in a tank or well casing and vents the radon outdoors.⁠1Around $7,000⁠1
Granular activated carbon (GAC)Radon in well water. The Health Department discourages it, because radon collected on the filter can pose a radiological hazard to homeowners and service technicians.⁠1Around $2,000⁠1

These estimates come from the Health Department’s fact sheet “Fixing Radon in Your Home,” dated January 2024. They are not quotes. The EPA suggests getting an estimate from one or more qualified radon mitigation contractors.⁠13

What changes the price

The EPA’s Consumer’s Guide to Radon Reduction lists these points:⁠3

  • Costs vary with the size and design of your home and which radon reduction methods are needed.
  • When choosing a system, you and your contractor should consider how high your radon level is, the costs of installation and operation, your home’s size and your foundation type.
  • A home with more than one foundation type, such as a basement under part of the house and a slab or crawlspace under the rest, may need a combination of techniques.
  • Many contractors give free estimates, but they may charge for diagnostic tests that help decide which system to use.
  • A less expensive system may cost more to operate and maintain, and the quality of the building materials affects how long the system lasts.
  • The contract should state the total cost of the job, including taxes and permit fees, any deposit, and when payment is due in full.
How an active soil depressurization system works Cross-section of a house with a basement. Radon from the soil enters through cracks in the basement floor slab. A suction point under the slab is connected to a vent pipe that runs up through the house to a fan in the attic, outside the living space, and out above the roof, where the radon is vented outdoors. A gauge on the pipe warns if the system stops working. Radon ventedoutdoors, abovethe roof Fan in the attic,outside livingspace Vent pipe Gauge warns ifthe systemstops working Suction point:pipe intocrushed rock orsoil underthe slab Radon from the soil entersthrough cracks in the slab Basement Living space Attic
How active soil depressurization works. A fan connected to a suction pipe under the slab draws radon from below the home and releases it into the outdoor air.⁠3 In most cases, an ASD system is a vent pipe and a fan.⁠1 The EPA says the exhaust must vent above the surface of the roof, the fan must not be in or below a living area (attics, garages and the outside of the home are common spots), and a warning device must alert you if the system stops working.⁠3 How many suction points a home needs, and where, depends on the soil or crushed rock under the slab; often one is enough.⁠3 Drawing by Vermont Radon from the EPA’s Consumer’s Guide to Radon Reduction and the Health Department’s Fixing Radon fact sheet. Not to scale.

Running costs

  • Most radon reduction systems cause some loss of heated or cooled air, and systems with fans slightly increase your electric bill.⁠3
  • Fans may last five years or more, and manufacturer warranties tend not to exceed five years. The cost to replace a fan depends on labor and materials.⁠3
  • An HRV filter should be changed twice a year. The EPA puts replacement filters at $10 to $25.⁠3
  • Retests cost the price of a kit: $25 for the Health Department Lab’s long-term kit, $50 for its short-term kit.⁠4

Retesting after the work

  • The EPA says to do the first test within 30 days of installation, but no sooner than 24 hours after the system is running with its fan on. It recommends an independent follow-up test, done by an independent tester or by you, and a two- to seven-day measurement.⁠3
  • For well water, retest after any treatment system is installed.⁠5

After the work: retest, then keep watch

Test again after a system is installed to make sure levels are below 4.0 pCi/L, then test every two years to make sure it’s still working.⁠6 The Lab’s long-term kit is $25 and its short-term kit is $50.⁠4

Between tests, a digital monitor records radon continuously and can show unusual swings.⁠7 It doesn’t replace the retest: CRCPD says consumer monitors are not for mitigation decisions and to verify their results with an approved test.⁠8

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Help paying for mitigation

The Health Department lists programs that help eligible Vermonters pay for home repairs, including radon mitigation.⁠9 Rules change, so check the Health Department’s financial assistance page before you apply.

NeighborWorks loans and grants, by county

To be eligible, you must own and live in your home and have a gross household income below 80% of the area median income.⁠9

CountiesOrganization
Chittenden, Franklin, Grand IsleChamplain Housing Trust. Burlington properties are not eligible.⁠9
Washington, Orange, LamoilleDownstreet Housing & Community Development9
Caledonia, Orleans, EssexRuralEdge9
Addison, Rutland, BenningtonNeighborWorks of Western Vermont9
Windham, WindsorWindham & Windsor Housing Trust9

USDA Rural Development Section 504

Low-cost home repair loans and grants. For a loan, you must own and live in your home, have a gross household income below 50% of your area’s median income, and live in an eligible area; Burlington residents are not eligible. Grants are for people 62 or older who can’t repay a loan.⁠9

FSA, HSA or HRA funds

You may be able to use a flexible spending account, health savings account or health reimbursement arrangement if a medical professional recommends addressing radon in your home because it is causing a medical condition, and provides a Letter of Medical Necessity.⁠9 Ask your plan administrator what your plan accepts.

Burlington Lead Program

For households in Burlington and Winooski with lead problems, the program can also help with radon or mold while it fixes the lead.⁠9

Building new costs less

Building radon resistant costs $250 to $750, compared with $1,500 to $2,500 to fix a radon problem later, according to the Health Department.⁠2 The EPA says the cost of fixing is much less if a passive system was installed during construction.⁠10

Get a quote for your home

The Health Department’s figures are estimates, not quotes. The EPA suggests getting an estimate from one or more qualified radon mitigation contractors.⁠13 If you may qualify for help paying, check the programs above before you sign.⁠9

Find a certified contractor How each system works

Common questions

How much does radon mitigation cost in Vermont?

The Health Department estimates $1,500 to $2,500 to install active soil depressurization and around $7,000 for an HRV or ERV. For well water, it estimates around $7,000 for aeration and around $2,000 for granular activated carbon.⁠1

Why do quotes differ from house to house?

The EPA says costs vary with the size and design of your home and which radon reduction methods are needed. Your radon level and foundation type also shape which system fits.⁠3

Are there costs after installation?

Yes. Systems with fans slightly increase your electric bill, and fans may last five years or more before they need repair or replacement.⁠3 Plan on a retest every two years.⁠6

Is there help paying for radon mitigation in Vermont?

Yes, for eligible households. The Health Department lists NeighborWorks loans and grants, USDA Section 504 repair loans and grants, and FSA, HSA or HRA funds with a Letter of Medical Necessity.⁠9

Can I use my HSA to pay for radon mitigation?

Possibly. The Health Department says you may be able to use FSA, HSA or HRA funds if a medical professional recommends addressing radon because it is causing a medical condition, and provides a Letter of Medical Necessity.⁠9

Last reviewed How we source facts

Sources

  1. Vermont Department of Health. Fixing Radon in Your Home (fact sheet, January 2024). Checked 2026-10-17. ↩
  2. Vermont Department of Health. Building Radon Resistant (fact sheet, June 2025). Checked 2026-10-17. ↩
  3. U.S. Environmental Protection Agency. Consumer’s Guide to Radon Reduction: How to Fix Your Home (EPA 402/K-10/005, 2025). Checked 2026-10-17. ↩
  4. Vermont Department of Health Laboratory. Radon Test Kits (Health Department Lab webstore). Checked 2026-10-17. ↩
  5. Vermont Department of Health. Radon in Drinking Water. Checked 2026-10-17. ↩
  6. Vermont Department of Health. Radon in Your Home. Checked 2026-10-17. ↩
  7. U.S. Environmental Protection Agency. Home Buyer’s and Seller’s Guide to Radon (EPA 402/K-24/001, March 2024). Checked 2026-10-17. ↩
  8. Conference of Radiation Control Program Directors (CRCPD). Consumer Digital Radon Monitors (CRCPD guidance, reprinted in The Radon Reporter, Q4 2025, p. 39). Checked 2026-10-17. ↩
  9. Vermont Department of Health. Financial Assistance (Healthy Homes). Checked 2026-10-17. ↩
  10. U.S. Environmental Protection Agency. A Citizen’s Guide to Radon (EPA 402/K-12/002, 2025). Checked 2026-10-17. ↩

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