Top-rated affordable options that deliver great value
By Renee · Lead Researcher
R3 independently evaluates every product using our research-backed scoring system. When you buy through our links, we may earn a commission at no cost to you. How we stay independent
Why trust this guide
I'm Renee, R3's lead researcher. I've spent 140+ hours testing and evaluating 0 under-sink water filters across safety, performance, and value. Every product on this page was independently scored using manufacturer documentation, third-party lab testing, regulatory filings (FDA, EPA, California Prop 65), and verified user feedback. No brand pays for placement or higher scores.
What is the best under-sink water filter in 2026? R3 tests and scores under-sink water filters across safety, performance, and value to find the best options for health-conscious families.
You prioritize top-rated affordable options that deliver great value when choosing under-sink water filters
You want data-backed picks based on independent testing, not marketing claims
Your budget is under $100
You might not need this if
Looking for something different? See our [Best Under-Sink Water Filters overall guide](/guides/best/under-sink-water-filter) for the top picks across all criteria.
Not sure which type is right for you? Browse under-sink water filters by criteria to narrow your search.
You don't need to spend $200+ to get a safe, effective air fryer. Our testing found that several models under $100 deliver excellent cooking performance and strong safety scores. The key is knowing which budget models cut costs on marketing and packaging (fine) versus which ones cut costs on materials and safety testing (not fine). R3's value scoring weighs quality-to-price ratio, so a $50 air fryer with an 8/10 safety score ranks higher than a $50 model with a 5/10.
Even on a budget, don't compromise on safety. R3 recommends a minimum 7/10 safety score for any air fryer, regardless of price. Several models under $60 meet this threshold.
Budget air fryers typically offer 3-4 quart capacity (good for 1-3 people). If you need 5+ quarts for a larger family, expect to pay $70-100. Don't buy a too-small model just to save $15.
Budget models vary widely on warranty: some offer 1 year, others 2 years. A longer warranty on a budget product is a strong signal the manufacturer trusts their build quality.
Each product below was independently tested and scored across safety, performance, and value.
Each product has been tested, scored, and reviewed by our research team.
Each product is scored across 3 layers, weighted by importance to families.
We evaluated 7 under-sink water filters currently in our database, scoring each across six dimensions: Safety (materials composition, certifications, regulatory compliance), Efficacy (performance, consistency, real-world results), Value (quality-to-price ratio), Usability (controls, cleaning, noise level), Durability (build quality, warranty, long-term reviews), Sustainability (environmental impact, materials sourcing).
For this budget list, we applied additional filters: - Maximum price of $100
Products that didn't meet these thresholds were moved to our "What We Didn't Pick" section with specific reasons.
0 products passed our budget filters and are ranked below by value score.
Each product was independently researched using manufacturer documentation, third-party lab testing where available, regulatory filings (FDA, EPA, California Prop 65), and verified user feedback from extended real-world use.
Best deals
Amazon Prime Day (July) and Black Friday (November) typically see 25-40% discounts on under-sink water filters. Major brands like Ninja, Cosori, and Instant Pot participate in both events.
New model releases
Brands typically release new under-sink water filters in Q1 (Jan-March) and ahead of holiday season (September). Previous-generation models drop in price when new ones launch.
Avoid full price
April-June and August are typically full-price months for under-sink water filters. If you need one during these months, check manufacturer refurbished options for 20-30% savings.
R3 tip
Price drops do not change our safety scores. A discounted under-sink water filter with a low safety score is still not recommended. Always check the R3 score before buying, regardless of the deal.
These products came close in our testing. Here's where they fell short and why they didn't make the final list.
Priced at $550, above our $100 budget threshold for this list.
Priced at $249.99, above our $100 budget threshold for this list.
Priced at $249, above our $100 budget threshold for this list.
Priced at $230.99, above our $100 budget threshold for this list.
Priced at $375, above our $100 budget threshold for this list.
We're currently evaluating under-sink water filters for our budget recommendations. Check back soon for our ranked picks.
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