Water filters for renters: HSA/FSA-eligible options without installation
Renting does not mean settling for unfiltered water. Point-of-use systems are HSA/FSA-eligible, need no permanent plumbing changes, and move with you when you go. Here are the best no-install options and how they qualify.
Reviewed against IRS Pub. 502 & 969· Stephen Evangelista· Updated June 16, 2026
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Renter-friendly
Eligible and install-free. Point-of-use systems qualify with a Letter of Medical Necessity, need no permanent changes, and come with you when you move — ideal for rentals.
The renter's challenge
A whole-house system installs at the point of entry, which usually is not an option in a rental — and you would not want to leave it behind anyway. The solution is point-of-use: systems that treat one tap and attach without permanent plumbing work.
No-install eligible options
Under-sink reverse osmosis — connects to the existing kitchen supply and can be removed when you leave; the most thorough option. See RO eligibility.
Countertop and faucet filters — the simplest, fully renter-friendly, lower cost.
Skip anything requiring permanent plumbing modification or landlord approval. The whole point is a system that works in your unit today and moves with you tomorrow — protecting both your water and your deposit.
It moves with you
Because point-of-use systems are not built into the home, they are a portable investment: buy once with pre-tax dollars, take it to your next place. Replacement filters can use future eligible funds too.
Best for rentals
Under-sink reverse osmosis
Clean drinking water with no permanent install — around $399, eligible via the TrueMed checkout.