Evaporative Cooler in St. Louis — $50/yr to Run (13.1¢/kWh)
Your evaporative cooler in St. Louis costs about $4/month at 13.1¢/kWh. See daily, monthly, and yearly costs, plus tips to cut your bill.
St. Louis, MO Electricity Rate
13.1¢/kWh
Utility: Ameren Missouri
+1% vs national avg
National avg: 13.0¢/kWh
Daily Cost
$0.42
3.2 kWh/day
Monthly Cost
$4.19
32 kWh/mo
Annual Cost
$50
384 kWh/yr
Lifetime (15yr)
$755
energy only
Monthly Cost Breakdown in St. Louis
| Period | kWh | St. Louis Cost | National Avg | Difference |
|---|---|---|---|---|
| Daily | 3.2 | $0.42 | $0.42 | +$0.00 |
| Weekly | 22.4 | $2.93 | $2.91 | +$0.02 |
| Monthly | 32.0 | $4.19 | $4.16 | +$0.03 |
| Quarterly | 96.0 | $12.58 | $12.48 | +$0.10 |
| Annual | 384.0 | $50.30 | $49.92 | +$0.38 |
Customize Your Evaporative Cooler Cost
Adjust usage hours and electricity rate to calculate your exact cost in St. Louis.
Daily
$0.42
Monthly
$4.19
Annual
$50
15-Year
$755
Energy Saving Tips for Evaporative Cooler in St. Louis
- ✓St. Louis electricity rates are 1% above the national average — energy efficiency matters more here.
- ✓Best in dry climates below 50% humidity
- ✓Keep water pads clean
- ✓Open windows for airflow
Highest-Cost Appliances in St. Louis, MO
See which appliances cost the most to run at St. Louis's 13.1¢/kWh electricity rate.
Level 2 EV Charger (240V)
Transportation · 7,200W
$1,698/yr
$141.48/mo
Electric Furnace
HVAC · 10,000W
$1,179/yr
$98.25/mo
Electric Tankless Water Heater
Water Heating · 18,000W
$861/yr
$71.72/mo
EV Charger (Level 2)
Garage · 7,200W
$849/yr
$70.74/mo
Boiler (Electric)
HVAC · 6,000W
$707/yr
$58.95/mo
Electric Water Heater (Tank)
Water Heating · 4,500W
$646/yr
$53.79/mo
Water Heater (Tank Electric)
Water Heating · 4,500W
$646/yr
$53.79/mo
Heat Pump
HVAC · 2,400W
$503/yr
$41.92/mo
Evaporative Cooler Cost in Other Missouri Cities
| City | Rate | Annual Cost | vs St. Louis |
|---|---|---|---|
| St. Louis (current) | 13.1¢ | $50 | — |
| Kansas City | 13.5¢ | $52 | +$1 |
| Springfield | 12.7¢ | $49 | $-2 |
| Columbia | 13.4¢ | $51 | +$1 |
| Independence | 13.9¢ | $53 | +$3 |
| Lee's Summit | 11.7¢ | $45 | $-5 |
| OFallon | 10.2¢ | $39 | $-11 |
| St. Joseph | 13.2¢ | $51 | +$0 |
| St. Charles | 13.3¢ | $51 | +$1 |
Evaporative Cooler Energy Cost FAQ — St. Louis, MO
Understanding Evaporative Cooler Energy Costs in St. Louis, MO
St. Louis is a mid-sized Missouri city where residential electricity rates from Ameren Missouri are shaped by regional energy supply and local demand patterns. Running a low-draw appliance like the Evaporative Cooler (400W) at St. Louis's rate of 13.1¢/kWh costs approximately $50 per year — $0 more than the national average of $50.
St. Louis rates are 1% above the national average — a modest premium that adds $0 per year to Evaporative Cooler operating costs. Over the appliance's 15-year lifespan, that's $6 in cumulative extra spending versus the national average.
With a cost of living index of 97, St. Louis is near the national median. The Evaporative Cooler's monthly cost of $4.19 represents a typical share of the average St. Louis electric bill of $101/month. Since no ENERGY STAR or smart version is currently available for this appliance, reducing usage hours is the primary way to cut costs.
St. Louis's moderate climate (avg 47.8°F) helps keep seasonal energy cost swings manageable for most appliances. A Evaporative Cooler produces approximately 0.27 tons of CO2 annually at typical usage. St. Louis residents can reduce this footprint by optimizing usage patterns, or investing in solar — see our solar savings calculator for St. Louis.
Compare All Energy Costs in St. Louis
See energy costs for 178+ household appliances at St. Louis's local electricity rate.
Frequently Asked Questions
How much does it cost to run an Evaporative Cooler in St. Louis, MO?
At St. Louis's average electricity rate of 13.1¢/kWh, an Evaporative Cooler costs approximately $50 per year to run. That's about $4.19 per month with typical usage of 8 hours per day.
What is the electricity rate in St. Louis, MO?
The average residential electricity rate in St. Louis, MO is 13.1¢/kWh, which is 1% above the national average of 13.0¢/kWh. The primary utility provider is Ameren Missouri.
How much electricity does an Evaporative Cooler use per year?
A Evaporative Cooler uses approximately 400 watts and consumes about 384 kWh per year with typical usage of 8 hours/day for 120 days/year.
Is an Evaporative Cooler expensive to run in St. Louis?
Compared to the national average cost of $50/year, running an Evaporative Cooler in St. Louis costs $0 more per year due to higher local electricity rates.
How can I reduce my Evaporative Cooler energy cost in St. Louis?
To reduce Evaporative Cooler costs in St. Louis: Best in dry climates below 50% humidity. Keep water pads clean. Consider using a smart plug to monitor and optimize usage. Also check with Ameren Missouri for local energy efficiency rebates and programs.