The Best Costco Garbage Disposals in 2026 (Quick Guide for Shoppers) If you're shopping for a Costco garbage disposal, here are the top-rated models available right now: Model Horsepower Noise Reduction Starting Price American Standard Slim Line 1.25 HP Standard ~$99 American Standard Hush-Tek 1.25 HP Hush-Tek suppression Check warehouse InSinkErator C3000 0.75 HP Up to 55% quieter Check warehouse InSinkErator C5000 0.75 HP Up to 70% quieter Check warehouse InSinkErator C7000