Whole House Fan in St. Louis — $26/yr to Run (13.1¢/kWh)
Your whole house fan in St. Louis costs about $2/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
$0.26
2.0 kWh/day
Monthly Cost
$2.18
17 kWh/mo
Annual Cost
$26
200 kWh/yr
Lifetime (20yr)
$524
energy only
Monthly Cost Breakdown in St. Louis
| Period | kWh | St. Louis Cost | National Avg | Difference |
|---|---|---|---|---|
| Daily | 2.0 | $0.26 | $0.26 | +$0.00 |
| Weekly | 14.0 | $1.83 | $1.82 | +$0.01 |
| Monthly | 16.7 | $2.18 | $2.17 | +$0.02 |
| Quarterly | 50.0 | $6.55 | $6.50 | +$0.05 |
| Annual | 200.0 | $26.20 | $26.00 | +$0.20 |
Customize Your Whole House Fan Cost
Adjust usage hours and electricity rate to calculate your exact cost in St. Louis.
Daily
$0.26
Monthly
$2.18
Annual
$26
20-Year
$524
Energy Saving Tips for Whole House Fan in St. Louis
- ✓St. Louis electricity rates are 1% above the national average — energy efficiency matters more here.
- ✓A smart Whole House Fan with scheduling optimization can save ~$3/year at St. Louis rates.
- ✓Use in the evening when outside is cooler
- ✓Open windows when running
- ✓Close attic access in winter
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
Whole House Fan Cost in Other Missouri Cities
| City | Rate | Annual Cost | vs St. Louis |
|---|---|---|---|
| St. Louis (current) | 13.1¢ | $26 | — |
| Kansas City | 13.5¢ | $27 | +$1 |
| Springfield | 12.7¢ | $25 | $-1 |
| Columbia | 13.4¢ | $27 | +$1 |
| Independence | 13.9¢ | $28 | +$2 |
| Lee's Summit | 11.7¢ | $23 | $-3 |
| OFallon | 10.2¢ | $20 | $-6 |
| St. Joseph | 13.2¢ | $26 | +$0 |
| St. Charles | 13.3¢ | $27 | +$0 |
Whole House Fan Energy Cost FAQ — St. Louis, MO
Understanding Whole House Fan 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 Whole House Fan (500W) at St. Louis's rate of 13.1¢/kWh costs approximately $26 per year — $0 more than the national average of $26.
St. Louis rates are 1% above the national average — a modest premium that adds $0 per year to Whole House Fan operating costs. Over the appliance's 20-year lifespan, that's $4 in cumulative extra spending versus the national average.
With a cost of living index of 97, St. Louis is near the national median. The Whole House Fan's monthly cost of $2.18 represents a typical share of the average St. Louis electric bill of $101/month. While no ENERGY STAR version is available, a smart Whole House Fan with automated scheduling can reduce consumption by 10%, saving $3/year.
St. Louis's moderate climate (avg 47.8°F) helps keep seasonal energy cost swings manageable for most appliances. A Whole House Fan produces approximately 0.14 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 a Whole House Fan in St. Louis, MO?
At St. Louis's average electricity rate of 13.1¢/kWh, a Whole House Fan costs approximately $26 per year to run. That's about $2.18 per month with typical usage of 4 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 a Whole House Fan use per year?
A Whole House Fan uses approximately 500 watts and consumes about 200 kWh per year with typical usage of 4 hours/day for 100 days/year.
Is a Whole House Fan expensive to run in St. Louis?
Compared to the national average cost of $26/year, running a Whole House Fan in St. Louis costs $0 more per year due to higher local electricity rates.
How can I reduce my Whole House Fan energy cost in St. Louis?
To reduce Whole House Fan costs in St. Louis: Use in the evening when outside is cooler. Open windows when running. Consider using a smart plug to monitor and optimize usage. Also check with Ameren Missouri for local energy efficiency rebates and programs.