Caeli Picks
Your HSA Covers Way More Than Claritin: An Allergy Sufferer's Guide
Allergy meds are just the start. Your HSA also covers the air purifier, the hypoallergenic bedding, and even the dust-mite-proof mattress cover.
I never had crazy allergies growing up. But my dad has always been a mess every spring — sneezing, itchy eyes, the whole thing. Even our dog gets it. But when the season rolls in, I’ve learned it’s better to be prepared than to scramble. And if you or someone in your house is a real sufferer, there’s a lot your HSA or FSA will cover that most people never claim. Here are my tips.
The fast answer
OTC antihistamines like Claritin, Zyrtec, and Allegra are automatically HSA-eligible — no paperwork needed. Bigger items like HEPA air purifiers, hypoallergenic bedding, and dust-mite covers need a Letter of Medical Necessity (LMN), but one letter from your allergist can cover all of them at once. The IRS qualifies these under Publication 502 when prescribed for a documented allergy or respiratory condition.
TL;DR: Allergy meds need no paperwork. Air purifier + bedding + filters need one LMN — same letter covers them all.
Caeli Spectrum
🟢 No paperwork needed
Claritin, Zyrtec, Allegra, Nasacort, Flonase, Neti pots, saline rinses, allergy testing copays
🟡 LMN unlocks these
HEPA air purifiers, hypoallergenic bedding, dust-mite mattress and pillow covers, dehumidifiers, replacement filters
⚫ Skip these
Air conditioning units, standard vacuum cleaners, generic multivitamins
TL;DR: OTC meds are free to claim. Air purifier and bedding need an LMN — one letter covers them all.
If you need allergy meds (and your dad definitely does)
Every OTC antihistamine, nasal spray, and saline rinse has been auto-eligible since the CARES Act in 2020. No doctor needed. Stock up — they’re shelf-stable and you’ll use them. December is a good time to clear out any leftover FSA balance on a year’s worth of supply.
Claritin 24-Hour Non-Drowsy — ~$25 for 45 count
If you want something that won’t make you drowsy at your desk, this is the one. Loratadine is the active ingredient — it works the same whether it’s the Claritin brand or the store version. Buy either; just run it through your HSA card.
Zyrtec 24-Hour Allergy Relief — ~$28 for 45 count
Stronger than Claritin for some people — cetirizine hits faster but can cause mild drowsiness. My dad swears by this one. Worth trying if Claritin isn’t cutting it.
Flonase Sensimist Nasal Spray — ~$20
The gold standard for nasal symptoms — the American College of Allergy recommends nasal corticosteroids as first-line treatment for most allergy sufferers. Sensimist has no drip and no scent, which makes it easier to stick with daily. Fully auto-eligible.
TL;DR: All of these are auto-eligible. Stock up, especially before December if you have FSA dollars to use.
If you want to actually fix the environment (the bigger wins)
This is where the real savings are. One LMN from your allergist or PCP tied to a documented allergy or asthma diagnosis unlocks all of these — you don’t need separate paperwork per item. Ask your doctor to list each product category on the same letter.
Levoit Core 300 HEPA Air Purifier — $100
The most commonly LMN-purchased air purifier in the country and honestly the easiest entry point. Covers a bedroom-sized space, runs quiet at night, and the replacement filters ($20) are also LMN-eligible under the same letter. If you’re just getting started, start here.
Coway Airmega 400 HEPA Purifier — $400
If you have a larger living space or a dog in the house (hi), this is the upgrade. Handles up to 1,560 sq ft and has a real-time air quality indicator so you can see it working. Pre-tax at $400 saves you $120 in a 30% bracket.
Allerease Maximum Allergy Protection Bedding — $30–$80 per piece
Mattress encasings and pillow covers that block dust mites at the fabric level. Not glamorous, but if dust mites are your trigger, these genuinely help. LMN-eligible under the same allergy diagnosis as your air purifier.
hOmeLabs 35-Pint Dehumidifier — ~$200
Useful if mold or dust mites are your main trigger — both thrive in humid air. The EPA recommends keeping indoor humidity below 50% to control dust mites. LMN-eligible with an asthma or allergy diagnosis.
TL;DR: One LMN from your allergist, listed with all four categories. Set it up once, save every year.
The bundling play (one letter, everything covered)
Most LMNs can list multiple products when they all treat the same condition. A single letter diagnosing seasonal allergies or asthma can cover your air purifier, bedding, dust-mite encasings, dehumidifier, and even replacement filters under one document. Take this approach to your next allergist appointment — most doctors will sign it in one visit. Or skip the appointment entirely: Caeli's checkout-integrated telehealth is a chat-based consultation in under 3 minutes — a licensed clinician reviews and issues the LMN within 24 hours, with no doctor's visit required.
TL;DR: Bundle everything onto one LMN. Filter replacements stay covered year-round under the same letter.
Caeli Pro-Tip: Caeli flags allergy gear on Amazon, Levoit, and Coway automatically — so you know it’s covered before you checkout. Integrated telehealth handles the LMN, the auto-archive saves it for IRS audits, and renewal alerts keep your filter purchases pre-tax indefinitely. Install Caeli and let your allergies actually pay you back.
Frequently asked questions
Is a Levoit air purifier HSA-eligible in 2026?
Yes, with an LMN tied to allergies, asthma, or another respiratory condition. The Levoit Core 300 is one of the most commonly LMN-purchased air purifiers. Replacement filters are covered under the same letter.
Can I use my HSA for hypoallergenic bedding without a doctor’s note?
No — hypoallergenic bedding needs an LMN. Without one, the IRS treats it as general comfort goods, not medical.
How do I get one LMN that covers my air purifier and bedding together?
Ask your allergist or PCP to write a multi-product LMN listing each item category for your specific diagnosis. Most doctors will do it in one letter if you ask. Caeli’s telehealth can also issue one if you don’t have an appointment coming up.
Are dust-mite mattress covers HSA-eligible?
Yes with an LMN. Dust-mite-proof mattress and pillow encasings are commonly bundled into the same letter as your air purifier and bedding.
Does my HSA cover the Coway Airmega 400 in 2026?
Yes with an LMN. The Coway Airmega 400 is a high-end HEPA purifier rated for large rooms — LMN-eligible for documented respiratory or allergy conditions.
Can my dog’s dander trigger an HSA-eligible LMN?
Yes — pet dander is a recognized allergy trigger and can be listed in an LMN diagnosis. If your allergist documents your sensitivity to pet dander, that supports coverage for an air purifier just as seasonal allergies would.
Bottom line
If you have allergies — or live with someone who does, or have a dog who does — your HSA covers a lot more than Claritin. The bundle play with one LMN can save $200–$400 per year in pre-tax dollars. Set it up once, benefit for years.
Caeli automates the whole thing — the LMN, the eligibility check at checkout, and the renewal alerts. Install Caeli and let your allergies work in your favor for once.
TL;DR: Allergies = one of the highest-ROI HSA categories. One LMN, many products, years of savings.