Hi, I'm Anthony. Sunlighten is the most-asked-about infrared sauna brand on Burst, and the LMN math works for most of the contexts people use them.

Short answer. Yes. Sunlighten infrared saunas (mPulse Believe, mPulse Empower, mPulse Discover, Solo System, Amplify Series) and Sunlighten accessories can be FSA or HSA reimbursable with a Letter of Medical Necessity. The IRS treats infrared saunas as dual-purpose under Publication 502 and Notices 2006-69 and 2007-2: home wellness equipment by default, medical equipment when documented. Sunlighten's documented infrared spectrum (near, mid, and far infrared on the mPulse line) gives the LMN multiple medical anchor points: detoxification protocols in MCS, chronic pain, fibromyalgia, cardiovascular conditioning, and skin health contexts. Below is the framework.

If that already describes you, the request takes about three minutes and you can skip the rest of this guide.

Request my LMN →

What's eligible with an LMN

• Sunlighten mPulse line. Believe, Empower, Discover (multi-spectrum infrared).

• Sunlighten Solo System. Portable infrared blanket-style unit.

• Sunlighten Amplify line. Premium far-infrared cabins.

• Replacement infrared panels when needed for ongoing use.

• Delivery and installation fees on the same receipt.

• Ergonomic accessories (chromotherapy lighting, ergonomic backrests) when bundled with the cabin purchase.

What's not eligible

• Aromatherapy oils and ambient products.

• Sunlighten branded merchandise.

• Outdoor decking or installation pads as construction.

Common reasons people get a Sunlighten LMN

• Chronic pain (fibromyalgia, rheumatoid arthritis, ankylosing spondylitis)

• Cardiovascular reconditioning (saunas have documented blood pressure benefits)

• Multiple chemical sensitivity with documented detoxification protocols

• Hypertension management

• Chronic respiratory conditions (saunas can support mucociliary clearance)

• Documented autoimmune contexts where thermal therapy is part of the treatment plan

• Depression with documented thermal therapy protocols

A few common Sunlighten FSA/HSA pitfalls

• Submitting financing statements. Sunlighten often involves financing. Use the original Sunlighten receipt.

• Buying multiple cabins without justification. One sauna typically covers the medical context; multi-unit purchases need clear LMN documentation.

• Forgetting the installation cost. When delivery and install are on the same receipt, they reimburse together.

Sunlighten FSA/HSA FAQ

Is Sunlighten HSA eligible without an LMN?
Sunlighten is a wellness product by IRS default. The LMN creates eligibility.

Is the Solo blanket-style unit covered?
With an LMN, yes. Same eligibility framework as full cabins.

Can I get an LMN for a Sunlighten I already bought?
Per IRS guidelines, LMNs must be for purchases made on or after the LMN request date.

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

Stop paying full price for your Sunlighten

If you've got a chronic pain or cardiovascular context, the LMN turns the Sunlighten purchase 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.