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Method ledger
How Havenraft scores garbage disposals
Each product on the garbage disposals scorecard gets one 0–100 score from the weighted formula below, computed only from published manufacturer specs and dated retailer records; we do not physically test products. The current table covers 29 products across 8 recorded spec fields, refreshed July 1, 2026.
- Scale
- 0-100
- Products
- 29
- Fields
- 8
- Updated
- July 1, 2026
The weights
| Dimension | Weight | Definition | Data source |
|---|---|---|---|
| Motor Power | 26% | Listed hp motor runs from 0.33 to 1.25 across the scored catalog; higher numbers score better, and unlisted values score neutral. | Hp Motor |
| Grinding Stages | 16% | This dimension reads listed grinding stages from 1 to 4; higher numbers score better, while a missing value scores neutral. | Grinding Stages |
| Sound Insulation | 16% | The sound insulation scale runs Quietdrive up to Soundseal; entries nearer Soundseal earn the most credit, while unlisted ones stay neutral. | Sound Insulation |
| Septic Safety | 12% | The septic safe score is binary: a listed yes earns full marks, while a no or a missing listing earns zero. | Septic Safe |
| Feed Type | 10% | Scoring feed type follows the Batch Feed-through-Continuous Feed ladder where the top rungs win the highest marks, and a missing entry holds neutral. | Feed Type |
| Included Power Cord | 8% | Listed cord included is a presence check — a yes takes full credit, and a no or absent value scores zero. | Cord Included |
| Grind-Ring Material | 6% | Listed grinding components is graded on the Galvanized Steel Grind Ring-to-Stainless Steel Grind Ring scale — the higher rungs score best, and a missing value stays neutral. | Grinding Components |
| Price Value | 6% | Listed price runs from 80 USD to 443 USD across the scored catalog; lower numbers score better, and unlisted values score neutral. | Price |
| Total | 100% | All dimensions above sum to the full score. | Published score total |
- #1 InSinkErator Evolution 1.0HP79/100Motor Power 19 pts, Grinding Stages 16 pts, Sound Insulation 16 pts
- #2 Kraus WasteGuard 1 HP Continuous Feed77/100Motor Power 19 pts, Sound Insulation 14 pts, Septic Safety 12 pts
- #3 Frigidaire 1.25 HP Corded Continuous Feed Disposer75/100Motor Power 26 pts, Feed Type 10 pts, Grinding Stages 8 pts
- #4 Waste King Legend Series 1 HP74/100Motor Power 19 pts, Septic Safety 12 pts, Feed Type 10 pts
- #5 Kraus WasteGuard High-Speed 3/4 HP Ultra-Quiet Motor71/100Sound Insulation 14 pts, Septic Safety 12 pts, Motor Power 12 pts
| Product | Composite | Motor Power | Grinding Stages | Sound Insulation | Septic Safety | Feed Type | Included Power Cord | Grind-Ring Material | Price Value |
|---|---|---|---|---|---|---|---|---|---|
| InSinkErator Evolution 1.0HP | 79/100 | 18.9 points from grade 0.73 | 16 points from grade 1 | 16 points from grade 1 | 12 points from grade 1 | 10 points from grade 1 | 0 points from grade 0 | 3 points from grade 0.5 | 3 points from grade 0.5 |
| Kraus WasteGuard 1 HP Continuous Feed | 77/100 | 18.9 points from grade 0.73 | 8 points from grade 0.5 | 13.6 points from grade 0.85 | 12 points from grade 1 | 10 points from grade 1 | 8 points from grade 1 | 3 points from grade 0.5 | 3.4 points from grade 0.56 |
| Frigidaire 1.25 HP Corded Continuous Feed Disposer | 75/100 | 26 points from grade 1 | 8 points from grade 0.5 | 8 points from grade 0.5 | 6 points from grade 0.5 | 10 points from grade 1 | 8 points from grade 1 | 6 points from grade 1 | 3 points from grade 0.5 |
| Waste King Legend Series 1 HP | 74/100 | 18.9 points from grade 0.73 | 8 points from grade 0.5 | 8 points from grade 0.5 | 12 points from grade 1 | 10 points from grade 1 | 8 points from grade 1 | 6 points from grade 1 | 3 points from grade 0.5 |
| Kraus WasteGuard High-Speed 3/4 HP Ultra-Quiet Motor | 71/100 | 11.9 points from grade 0.46 | 8 points from grade 0.5 | 13.6 points from grade 0.85 | 12 points from grade 1 | 10 points from grade 1 | 8 points from grade 1 | 3 points from grade 0.5 | 4.5 points from grade 0.75 |
What the score bands mean
Score bands80+ strong60–79 solidBelow 60 limited fit
- 80+: strong marks on the heaviest dimensions with few weak lines in the listed specs.
- 60–79: competitive on most scored inputs, with at least one clearly weaker dimension.
- Below 60: trails this field on the inputs weighted most; the product cards list exactly where.
Source hierarchy
Published manufacturer specifications rank first, dated retailer records second; marketing claims without a checkable figure are excluded from scoring. Missing values never earn invented numbers; they are labeled “not listed - neutral 50” and take the neutral 50 grade the weight definitions describe.
- InSinkErator US
- The Home Depot
- Lowe's
- Moen
- Waste King
- Frigidaire
- KitchenAid
- GE Appliances
- Scored product catalog
Retrieved · Built
- Frigidaire2026-07-01Source record
- GE Appliances2026-07-01Source record
- InSinkErator US2026-07-01Source record
- KitchenAid2026-07-01Source record
- Lowe's2026-07-01Source record
Update history
- Rankings rebuilt from the refreshed catalog: 29 garbage disposals re-scored on 8 published spec fields, motor power first.