SAUNA & HEAT THERAPY

Use your FSA/HSA on your sauna.

Get a Letter of Medical Necessity the same day. Burst files your reimbursement for you, and your pre-tax money typically lands in 1 to 3 days.

Get my LMN for $25

See how it works

★★★★★

4.9/5 from 800+ members

Auto-refund guarantee

Secure & private

Licensed clinician review

Real clinician review

Letter of Medical Necessity

Same-day

Your eligible recovery spending

Infrared sauna blanket

$599

Portable sauna tent

$199

Total eligible

$798

Burst files this for you. Money typically lands in 1 to 3 days.

$5M+

Reimbursements processed

15,000+

LMNs issued

Same day

Letter delivered

$25

Flat fee, no subscription

Works with every FSA/HSA administrator

HealthEquity

Fidelity

WEX

HSA Bank

Inspira

Optum

Further

What qualifies for an LMN

When a licensed clinician confirms it supports your health, the heat therapy you already pay for comes back to you tax-free. Burst does the rest, from the letter to the filing to the money in your account.

Muscle recovery

Ease soreness and speed recovery.

Circulation

Support healthy blood flow.

Stress relief

Relax and lower stress.

Detox & sleep

Sweat it out and sleep better.

One clinician-reviewed letter, valid for a full 12 months.

What members say

★★★★★

My sauna blanket is covered by my HSA now. Letter came same day.

Grace O.

Verified member · Burlington, VT

★★★★★

Use it for muscle recovery. A clinician reviewed it and Burst filed it.

Nate F.

Verified member · Little Rock, AR

★★★★★

Thought there was no way a sauna would qualify. It did.

Sophia L.

Verified member · Provo, UT

★★★★★

Quick, real clinician, money back that week.

Andre W.

Verified member · Akron, OH

How it works

Three steps from sign-up to reimbursement.

Tell us what you want covered

Answer a few questions in under two minutes.

Real clinician review

A licensed clinician reviews your information and issues your Letter of Medical Necessity the same day.

We file it for you

Burst files your reimbursement for you in minutes, and your money typically lands in 1 to 3 days.

See how it works in under a minute

A quick walkthrough from sign-up to reimbursement.

Auto-refund guarantee

If a licensed provider determines a Letter of Medical Necessity is not appropriate for you, your $25 is refunded automatically. No letter, no charge.

Frequently asked questions

Will my sauna actually be reimbursed?

An LMN documents medical necessity, then Burst files your reimbursement for you. Final approval is determined by your plan administrator, the same as any other eligible expense.

Does a sauna qualify without a letter?

Saunas and heat-therapy devices generally need a Letter of Medical Necessity to be FSA/HSA eligible. Burst gets you a clinician-reviewed letter, usually the same day.

How fast do I get my letter?

Intake takes under two minutes and your letter is issued the same day in most cases.

Which FSA/HSA plans does this work with?

Burst works with every FSA/HSA admin.

Do I need my own doctor?

No. A licensed clinician in the Burst network reviews your information and issues the letter. You do not need an existing relationship with a provider.

What if my plan denies the claim?

Reimbursement is decided by your plan administrator. If a clinician determines an LMN is not appropriate for you, your $25 is refunded automatically. We also refund you if your claim is denied because of the LMN.

★★★★★ Rated 4.9/5 by 800+ members

Put your FSA/HSA to work on your recovery.

Get your Letter of Medical Necessity today.

Get my LMN for $25

Use your FSA/HSA on your sauna

$25 flat · Same-day letter · Auto-refund guarantee

Get my LMN for $25