Methodology
How the American Ranking Institute scores, ranks and re-verifies products. Published in full, because a ranking you cannot inspect is an advertisement.
The ARI Score
Every ranked product receives one ARI Score from 0 to 100, per category placement, built from four published components:
| Component | Weight | What it measures |
|---|---|---|
| Product performance | 40% | Verified specifications, capability, build quality and durability. Manufacturer claims are checked, and inflated specifications are discounted, never rewarded. |
| Company accountability | 25% | The company behind the product: US presence, reachable support, warranty terms honored in practice, and parts availability over the product’s life. |
| Owner satisfaction | 20% | Verified owner experience and review evidence, weighted for authenticity and volume. |
| Value | 15% | Delivered performance per dollar against direct category competitors. |
Weights are fixed per category and published on the category page before its ranking. Where a category demands it (for example, trial and returns in Sleep), a component may be specialized — never silently changed.
Star ratings
The ARI Score is displayed as a star rating in half-star steps. Five stars requires a score of 93 or higher. Stars rate the product against its whole market, not against the other products on the page — a weak category’s Top 10 can honestly contain four-star products.
The accountability gate
No product reaches five stars on performance alone. A failing company accountability subscore (below 70) caps the published rating at four stars, regardless of the total. A superb product from a company that cannot be reached, will not honor its warranty, or cannot supply parts is not a five-star recommendation.
List sizes
A subcategory ranking shows a maximum of 10 products. A department’s flagship ranking shows a maximum of 30, drawn from across its subcategories. These are ceilings, not quotas: a category with seven qualifying products publishes seven.
No paid placement
Rankings, scores and awards cannot be bought, and no payment changes a product’s position. Sponsorship, where it exists, is labeled as sponsorship and kept separate from rankings.
Re-verification
Rankings are living documents. Scores are re-verified on a published cycle and whenever a product, its price, or its company materially changes; changes are logged on the ranking page.