Wellness & prevention
Is air purifiers FSA eligible?
Sometimes — an air purifier is FSA eligible only with a letter of medical necessity (e.g., for severe allergies or asthma).
General home air quality is not a medical expense. If a doctor recommends a purifier to treat a specific respiratory condition, it can qualify with a letter of medical necessity — some administrators reimburse only the cost above a comparable non-medical model.
Before you buy: get the letter first
- Ask your doctor for a letter of medical necessity that names the condition and why this is treatment, and keep it on file.
- Then pay with your FSA/HSA card or file a claim with the letter attached. Buying before you have the letter risks a denied claim.
Does the same answer apply to an HSA?
Yes. FSAs and HSAs share the same qualified-medical-expense rules (IRS Publication 502), so eligibility is identical. The difference is the deadline: FSA money is forfeited at the end of the plan year, while HSA money never expires.
Last reviewed 2026-06-11. Based on IRS Publication 502 and published IRS guidance. Not tax or medical advice — your plan administrator has the final say.