Operating & Maintenance Costs
Updated February 20, 2026
A garbage disposal uses surprisingly little electricity and water. The ongoing costs are minimal compared to almost any other kitchen appliance. But there are hidden costs if you use it wrong -- drain clogs, plumbing repairs, and premature replacement. Here's the actual operating cost breakdown.
Overview
A garbage disposal uses surprisingly little electricity and water. The ongoing costs are minimal compared to almost any other kitchen appliance. But there are hidden costs if you use it wrong -- drain clogs, plumbing repairs, and premature replacement. Here's the actual operating cost breakdown.
Cost Breakdown
Pro Tips
- Total operating cost for a well-maintained disposal: $15-$25 per year including electricity, water, and maintenance.
- The biggest cost is actually the disposal unit itself averaged over its lifespan. A $150 disposal lasting 10 years = $15/year.
- Avoid the hidden cost of drain clogs by following proper grinding guidelines -- no grease, no fibrous vegetables, no starchy paste.
- A disposal that's properly maintained costs less per year to operate than a roll of premium paper towels.
Mistakes to Avoid
- Worrying about electricity costs -- a disposal uses less power than a lightbulb.
- Not factoring in drain clog costs when evaluating disposal economics.
- Skipping the cold water during grinding to save water. The water savings are pennies; the clog costs are hundreds.
- Overloading the disposal to save time. Gradual feeding is free; a jammed motor and plumber visit is not.
When to Call a Pro
If you're getting frequent drain clogs despite proper disposal use, the drain line may have a pre-existing issue (old grease buildup, tree roots) that needs professional snaking or camera inspection.
Bottom Line
A garbage disposal costs $15-$25 per year to operate -- electricity, water, and maintenance combined. The only significant ongoing cost risk is drain clogs from misuse, which is entirely preventable.