Corentium Home
Battery-powered, no Wi-Fi required. Short and long-term radon readings on the device display. Best for renters and simple setups.
Shop Corentium HomePotentially HSA/FSA Eligible
Save up to 20–30% on cleaner air, courtesy of pre-tax dollars
Airthings radon detectors, indoor air quality monitors, and the Renew air purifier are potentially eligible for HSA and FSA reimbursement in the US with a Letter of Medical Necessity (LMN) from Truemed. Here's how it works, why we qualify, and exactly which products are covered.
Use it before you lose it
FSA funds don't roll over
Most FSA balances expire at year-end. Turn unused funds into long-term protection for your home and the people in it.
Why we qualify
Indoor air is a medical issue
HSA and FSA funds can be spent on devices that help monitor or manage a medical condition. Airthings devices track three of the most well-documented household health risks in the US.
Radon
The #1 cause of lung cancer among non-smokers, per the EPA. About 1 in 15 US homes is above the 4 pCi/L action level.
PM2.5 & smoke
Fine particulate matter triggers asthma, worsens cardiovascular disease, and infiltrates homes during wildfire season.
Allergens & VOCs
Humidity above 60% breeds mold. VOCs from cleaning products and new furniture aggravate allergies and asthma.
How it works
Reimbursement in four simple steps
You pay up front like any normal order, then get reimbursed by your HSA or FSA provider.
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Shop & check out
Buy any eligible Airthings device the normal way — credit card or standard checkout. No special path required.
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Open the Truemed link
On your order confirmation page, follow the Truemed link to start a short health survey. About two minutes.
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Get your LMN
If approved, Truemed issues a Letter of Medical Necessity for your purchase. It's emailed to you directly.
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Submit for reimbursement
Send your Airthings receipt and LMN to your HSA or FSA provider. They reimburse you from your pre-tax balance.
Reimbursement is subject to Truemed's evaluation and your plan's terms. Airthings does not guarantee approval.
Eligible monitors
Radon & air quality detectors
Every monitor below is potentially eligible for HSA/FSA reimbursement with a Letter of Medical Necessity from Truemed.
Corentium Home 2
PopularThe original, now Bluetooth-connected. Radon readings sync to the Airthings app for long-term tracking and alerts. Essential in EPA Zone 1.
Shop Corentium Home 2
View Radon
Wi-Fi connected radon monitor with an e-ink display. Short and long-term averages on-device and in the app, with humidity and temperature.
Shop View Radon
View Plus
Best sellerFlagship monitor with 7 sensors — radon, PM2.5, CO₂, VOCs, humidity, temperature, and air pressure. The most complete picture of your home.
Shop View PlusAlso eligible
Purify & protect, room by room
Reimbursement also covers our smart air purifier, its replacement filters, and our multiroom bundle.
Renew
Smart air purifier with HEPA-13 + activated charcoal filtration. Auto-mode reacts to your sensor data, so it runs harder when PM2.5 spikes and quietly the rest of the time.
Shop Renew
Renew Filters
Replacement HEPA-13 + activated charcoal filters for Renew. Each replacement — typically 2 to 3 times per year — is potentially reimbursement eligible.
Shop Renew Filters
Living Room + Basement
View Plus for the room you live in, View Radon for the floor where radon is highest. Radon concentrates in basements; PM2.5 and CO₂ build up where you spend time.
Shop the bundleCommon questions
HSA/FSA at Airthings
- How does HSA/FSA reimbursement actually work?
- You buy your Airthings device the normal way at checkout — credit card or standard payment. On the order confirmation page, you'll see a link to Truemed, our reimbursement partner. You complete a short health survey, and if approved, Truemed issues a Letter of Medical Necessity (LMN). You then submit your Airthings receipt and the LMN to your HSA or FSA provider, who reimburses you from your pre-tax balance.
- Why do I need a Letter of Medical Necessity?
- Indoor air quality monitors and purifiers sit in a category that requires medical justification for HSA/FSA use. The LMN documents that the device helps monitor or manage a medical condition — like asthma, allergies, or radon exposure — which is what makes the expense eligible under IRS rules.
- Is approval guaranteed?
- No. Truemed reviews each survey individually, and reimbursement is also subject to your plan's specific terms. Airthings does not guarantee approval. If you're not approved, you've still bought the device through a normal transaction.
- Are Renew Filters eligible every time I replace them?
- Yes. Each filter replacement is a separate potentially eligible purchase, typically 2 to 3 times per year. You'll need a new Truemed survey per order, but the LMN process is faster on repeat purchases.
- How much will I actually save?
- HSA and FSA contributions are pre-tax, so reimbursement effectively gives you back the federal, state, and FICA taxes you would have paid on that amount — typically 20–30% combined, depending on your tax bracket and state.
- Does this work outside the US?
- HSA and FSA are US-specific tax-advantaged accounts. Reimbursement on this page applies to US customers only.
Ready to start?
Cleaner air, paid for by your pre-tax dollars
Pick your Airthings device, check out as usual, and start the Truemed survey from your order confirmation.
*Reimbursement is subject to Truemed's evaluation and your individual plan's terms. Airthings indoor air quality monitors, radon detectors, the Renew air purifier, and Renew replacement filters are potentially eligible when used to monitor or manage a health condition such as asthma, allergies, or radon exposure, and approved with a Letter of Medical Necessity. US customers only. Airthings does not provide tax or medical advice.
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