Hi, I'm Anthony, co-founder at Burst. Air quality has become a more frequent LMN topic since the wildfire seasons of 2023-2025 made indoor air quality a documented health issue for a lot of people.

Short answer. Air purifiers (Blueair, Medify, Airdog, Coway, Levoit, IQAir, Molekule) and humidifiers (Canopy, Vornado, Honeywell) can be FSA or HSA reimbursable with a Letter of Medical Necessity when the device addresses a documented respiratory or skin condition. The IRS treats air quality equipment as dual-purpose under Publication 502 and Notices 2006-69 and 2007-2: home appliances by default, medical equipment when documented. The contexts that approve consistently are asthma, COPD, allergic rhinitis, atopic dermatitis, and immunocompromised states. Below is the brand-by-brand fit.

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Brand-by-brand fit

• Blueair. HEPASilent technology. Strong fit for severe allergies, asthma, post-wildfire smoke exposure.

• Medify Air. Multi-stage HEPA + activated carbon. Strong fit for general respiratory contexts and chemical sensitivities.

• Airdog. Ionic + HEPA. Strong fit for documented respiratory infections, immunocompromised states.

• Coway. Mid-range HEPA purifiers. Strong fit for general allergies and asthma management.

• Levoit. Lower-cost HEPA purifiers. Same eligibility framework.

• IQAir HealthPro. Premium HEPA + V5 carbon. Strong fit for severe MCS, post-wildfire smoke exposure, immunocompromised contexts.

• Molekule. PECO photocatalytic technology. Strong fit when prescribed by an environmental medicine specialist.

• Canopy humidifier. Hygiene-focused humidification. Strong fit for atopic dermatitis, eczema, chronic respiratory dryness.

What's eligible with an LMN

• The purifier or humidifier itself

• Replacement HEPA filters and humidifier filters (recurring with current LMN)

• Activated carbon filters when the device requires them

• Multi-room coverage when the medical context justifies multiple units

What's not eligible, even with an LMN

• Air freshening or scenting products.

• Whole-home HVAC upgrades as home improvement.

• Branded merchandise.

Common reasons people get an air quality LMN

• Asthma (especially severe or pediatric)

• COPD

• Allergic rhinitis with documented severe seasonal exposure

• Atopic dermatitis or eczema (humidifier eligibility)

• Post-wildfire smoke exposure with documented respiratory symptoms

• Multiple chemical sensitivity (MCS)

• Immunocompromised contexts (chemo, transplant, autoimmune)

• Mold sensitivity with documented home contamination

A few common air quality FSA/HSA pitfalls

• Buying multiple units without documented multi-room justification. Plan admins ask why you need three when one would suffice. The LMN should specify.

• Forgetting recurring filter costs. Filters are part of the eligible bundle and should be covered on the LMN ongoing.

• Submitting Amazon receipts without itemization. Plan admins want the specific purifier or humidifier model documented.

Air quality FSA/HSA FAQ

Is a Blueair purifier HSA eligible?
With an LMN naming asthma, severe allergies, or post-wildfire respiratory context, yes.

Are humidifiers FSA eligible?
With an LMN naming atopic dermatitis, chronic respiratory dryness, or eczema, yes.

Are replacement HEPA filters covered?
On the same LMN as the purifier, yes. Recurring while the LMN is current.

Can I cover purifiers in multiple rooms?
When the medical context justifies multi-room coverage (severe asthma at home with documented bedroom + living area triggers), yes.

Is the LMN fee itself FSA/HSA eligible?
Yes.

Stop paying full price for clean air

If you've got a respiratory or skin condition where air quality is part of the management plan, the LMN turns the spend into pre-tax. Get yours from Burst in under 5 minutes.

Request my LMN →

If you're not sure whether your situation fits, hit reply on any Burst email or write to support@getburst.com. We read every email ourselves.

Thanks,
Anthony
CEO and Co-Founder at Burst

For the underlying rules, see IRS Publication 502, IRS Notice 2006-69, and IRS Notice 2007-2.

Last updated: May 2026

This guide is not medical advice. Your eligibility depends on your specific situation and your plan administrator's interpretation of IRS rules. Burst's clinicians make eligibility decisions on a case-by-case basis.