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Vermont radon test kits: prices and where to get them

The Vermont Department of Health Laboratory sells its recommended long-term radon test kit for $25. Its short-term kit is $50, and its medium-term and radon in water kits are $25 each.⁠1

Most homes: order the $25 long-term kit

Order the Health Department Lab’s long-term kit for $25⁠1 and leave it in place for 3 to 12 months, ideally including a heating season.⁠2

Want to see levels day to day? A digital monitor measures and records radon continuously while it has power.⁠3 Use it alongside the lab test, not instead of it: CRCPD says to check a consumer monitor’s results with an approved test.⁠4

Order the $25 long-term kit See Airthings monitors Affiliate link

If you buy through the Airthings link, Vermont Radon may earn a commission at no extra cost to you. How we make money

Enter vtradon-10OFF for 10% off at checkout. Airthings ships only within the US.

The state lab kit is not an affiliate link. To order by phone, call 802-338-4736 or 800-660-9997.⁠2

Kits and prices

KitTest lengthPrice
Radon in air, long term (Kit RH)3 to 12 months$25⁠1
Radon in air, medium term (Kit RG)1 to 3 months$25⁠1
Radon in air, short term (Kit RF)2 to 7 days$50⁠1
Radon in water (Kit RC), for a well or springSee the kit’s instructions$25⁠1

The Lab lists the long-term kit as “the recommended radon test.”⁠1 Prices as listed on the Lab’s webstore on October 17, 2026. Confirm when you order.

How to order

  • Online: the Lab’s radon webstore.⁠1
  • By phone: 802-338-4736 or 800-660-9997 (toll-free in Vermont).⁠2 For a radon in water kit, the Health Department’s testing fact sheet lists 802-338-4724.⁠5
  • Other sellers: private labs and building supply stores sell short-term radon test kits.⁠2 For water, you can use another certified drinking water lab.⁠67

Which kit to choose

  • Long term, for most homes. The Health Department recommends testing for 3 to 12 months, ideally including a heating season, because radon levels can change daily, weekly and seasonally.⁠2
  • Short term, for a quick answer. For a real estate transaction or another reason you need results fast, the Health Department says to use two short-term kits placed side by side.⁠5
  • Medium term. This kit runs 1 to 3 months.⁠1 The EPA counts tests of 90 days or less as short-term and tests of more than 90 days as long-term.⁠8
  • Water. If you’re on a private well or spring, see Radon in well water. The Health Department says to know your air result too.⁠6

Heating season: a long-term test started in the fall can run through a Vermont winter. The Health Department recommends testing for 3 to 12 months, ideally including a heating season, because radon levels change daily, weekly and seasonally.⁠2

Where to put the kit

Where to put a radon test kit A room on the lowest level of the home that could be used regularly, finished or not. The test kit sits on a table at least 20 inches above the floor, away from the exterior wall and its window, and away from drafts, high heat and high humidity. A doorway to a kitchen, bathroom, laundry room or furnace room is marked as a place not to test. Lowest level that could be used regularly Not in akitchen,bathroom,laundry orfurnaceroom Away from drafts,high heat andhigh humidity Test kit At least20 inchesabovethe floor Away fromexteriorwalls Floor Not to scale
Where to put a test kit. The EPA says to test in the lowest level of the home that could be used regularly, finished or not, and to place the device at least 20 inches above the floor, where it won’t be disturbed, away from drafts, high heat, high humidity and exterior walls. Don’t test in a closet, stairway, hallway or crawl space, or in an enclosed area with high humidity or fast-moving air, such as a kitchen, bathroom, laundry room or furnace room.⁠3 Always follow the instructions that come with your kit. Drawing by Vermont Radon from the EPA’s Home Buyer’s and Seller’s Guide to Radon. Not to scale.

More setup tips, such as keeping windows closed for short-term tests, are on How to test your home.

Free kits

You may come across news stories or town notices saying Vermont gives radon test kits away. As of October 17, 2026, the Lab’s webstore lists a price for every kit, from $25 to $50.⁠1 The free kits on the Health Department’s radon page are for its study on radon in water, for wells and springs, and only a limited number of tests are available.⁠29 Local outreach with community partners, mostly town clerks and town offices, has also offered free radon test kits.⁠10 To ask what’s available near you, call the Radon Program at 802-863-7220 or 800-439-8550 (toll-free in Vermont).⁠2

Lab kits or a digital monitor

A digital monitor is a different kind of device: it measures and records radon continuously while it has power.⁠3 The Lab’s long-term kit is still the test the Health Department recommends for knowing your home’s typical level.⁠1 For the full comparison, see Digital radon monitors vs. state lab test kits.

Our pick, and why

Start with the state lab’s long-term kit. To learn your home’s typical level, the Health Department recommends a test of 3 to 12 months, ideally including a heating season,⁠2 and its Lab lists the $25 long-term kit as the recommended test.⁠1

A consumer digital monitor is for something else: it measures and records radon continuously while it has power, so you can watch levels change.⁠3 CRCPD says consumer monitors should never be used in real estate transactions, are not for mitigation decisions, and should have their results checked with an approved test.⁠4

  1. State lab long-term kit Our pick

    Good for: knowing your home’s typical level. The Lab lists it as the recommended test.⁠1

    $25 from the Health Department Lab, left in place 3 to 12 months.⁠12

    Order the $25 long-term kit

    Not an affiliate link.

If you also want day-to-day readings

Three of the consumer radon monitors Airthings sells, lowest price first. Each “Shop at Airthings” link opens Airthings’ discount store, not one model’s page, so check the price there. Enter vtradon-10OFF for 10% off at checkout. Airthings ships only within the US.

  1. Airthings Corentium Home 2

    Good for: radon (plus temperature and humidity), read on the device’s own screen with no app needed.⁠11

    Specs from Airthings
    Sensors
    Radon, temperature and relative humidity
    Screen
    LCD; after 30 days it shows 24-hour, 7-day, 30-day and long-term averages
    Power
    2 AA batteries
    Connection
    Bluetooth, with the Airthings app
    First reading
    A 24-hour average after one full day

    As listed on the Corentium Home 2 product page.⁠11 We haven’t tested it.

    $179.99 at Airthings, checked Oct 17, 2026.⁠11

    Shop at Airthings Affiliate link

    Vermont Radon may earn a commission at no extra cost to you. How we make money

  2. Airthings View Radon

    Good for: radon (plus temperature and humidity), with Wi-Fi and the Airthings app.⁠12

    Specs from Airthings
    Sensors
    Radon, humidity and temperature
    Screen
    2.9-inch ePaper display
    Power
    6 AA batteries or USB cable
    Connection
    Wi-Fi or Airthings SmartLink (with a hub); Bluetooth for setup

    As listed on the View Radon product page.⁠12 We haven’t tested it.

    $219.99 at Airthings, checked Oct 17, 2026.⁠12

    Shop at Airthings Affiliate link

    Vermont Radon may earn a commission at no extra cost to you. How we make money

  3. Airthings View Plus

    Good for: radon plus other indoor air sensors.⁠13

    Specs from Airthings
    Sensors
    Radon, particulate matter (PM2.5), carbon dioxide, VOCs, humidity, temperature and air pressure
    Screen
    2.9-inch ePaper display
    Power
    6 AA batteries or USB-C
    Connection
    Wi-Fi or Airthings SmartLink (with a hub); needs the free Airthings app

    As listed on the View Plus product page.⁠13 We haven’t tested it.

    $329.99 at Airthings, checked Oct 17, 2026.⁠13

    Shop at Airthings Affiliate link

    Vermont Radon may earn a commission at no extra cost to you. How we make money

Common questions

Are radon test kits free in Vermont?

Not in general. The Health Department Lab’s webstore lists the long-term kit at $25 and the short-term kit at $50.⁠1 The Health Department’s radon page lists free kits only for the Lab’s study on radon in well and spring water, and the number is limited.⁠2

Which kit does the Health Department recommend?

The long-term radon in air kit, used for 3 to 12 months, ideally including a heating season.⁠2

Can I order a kit by phone?

Yes. Call 802-338-4736 or 800-660-9997 (toll-free in Vermont).⁠2

How do I test my well water for radon?

Order the $25 radon in water kit from the Health Department Laboratory, or use another certified drinking water lab.⁠6

Last reviewed How we source facts

Sources

  1. Vermont Department of Health Laboratory. Radon Test Kits (Health Department Lab webstore). Checked 2026-10-17. ↩
  2. Vermont Department of Health. Radon in Your Home. Checked 2026-10-17. ↩
  3. 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. ↩
  4. 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. ↩
  5. Vermont Department of Health. Testing for Radon in Your Home (fact sheet, July 2025). Checked 2026-10-17. ↩
  6. Vermont Department of Health. Radon in Drinking Water. Checked 2026-10-17. ↩
  7. Vermont Department of Health Laboratory. Drinking Water Testing (certified drinking water labs). Checked 2026-10-17. ↩
  8. U.S. Environmental Protection Agency. A Citizen’s Guide to Radon (EPA 402/K-12/002, 2025). Checked 2026-10-17. ↩
  9. Vermont Department of Health Laboratory. Free radon in water test kit study (sign-up form). Checked 2026-10-17. ↩
  10. Vermont Department of Health. Engaging with Rural Communities at Higher Risk for Radon Exposure (Health Department conference presentation, October 28, 2025; hosted on the AARST website). Checked 2026-10-17. ↩
  11. Airthings. Corentium Home 2 (product page). Checked 2026-10-17. ↩
  12. Airthings. View Radon (product page). Checked 2026-10-17. ↩
  13. Airthings. View Plus (product page). Checked 2026-10-17. ↩

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