How Much Does It Cost to Run Septic Aerator?
An aerobic septic system's air pump runs 24/7 by design — a small but permanent line on the bill. At the US-average rate of 16.5¢/kWh, running a septic aerator costs about $9.62/month ($115.49/year) at typical use. Adjust the watts, hours, and your rate below for your exact number.
Cost to run a septic aerator
$115/yr
- Per day
- $0.32
- Per month
- $9.62
- Energy per year
- 701 kWh
Cost = power (kW) × hours × days × your rate. Defaults are typical values — enter your appliance's actual watts (often on a label) and your real rate for a precise figure.
Cost to run a septic aerator by electricity rate
Same 80 W appliance, 24 h/day — the bill changes with where you live.
| Scenario | Rate | Per month | Per year |
|---|---|---|---|
| Cheapest states (North Dakota) | 11.5¢ | $6.72 | $80.66 |
| US average | 16.5¢ | $9.62 | $115.49 |
| Most expensive (Hawaii) | 42.9¢ | $25.03 | $300.36 |
Find your state's rate on the electricity rates by state page, or see the appliance wattage chart for more devices.
Frequently asked questions
At the US-average residential rate of 16.5¢/kWh, a septic aerator drawing 80 watts for about 24 hours a day costs roughly $0.32 per day, $9.62 per month, and $115.49 per year. Your actual cost depends on your electricity rate and how much you use it — adjust both in the calculator above.
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