Gas Furnace in Rockford — $123/yr to Run (17.0¢/kWh)
Your gas furnace in Rockford costs about $10/month at 17.0¢/kWh. See daily, monthly, and yearly costs, plus tips to cut your bill.
Rockford, IL Electricity Rate
17.0¢/kWh
Utility: ComEd
+31% vs national avg
National avg: 13.0¢/kWh
Daily Cost
$0.82
4.8 kWh/day
Monthly Cost
$10.22
60 kWh/mo
Annual Cost
$123
720 kWh/yr
Lifetime (20yr)
$2,452
energy only
Monthly Cost Breakdown in Rockford
| Period | kWh | Rockford Cost | National Avg | Difference |
|---|---|---|---|---|
| Daily | 4.8 | $0.82 | $0.62 | +$0.19 |
| Weekly | 33.6 | $5.72 | $4.37 | +$1.35 |
| Monthly | 60.0 | $10.22 | $7.80 | +$2.42 |
| Quarterly | 180.0 | $30.65 | $23.40 | +$7.25 |
| Annual | 720.0 | $122.62 | $93.60 | +$29.02 |
Customize Your Gas Furnace Cost
Adjust usage hours and electricity rate to calculate your exact cost in Rockford.
Daily
$0.82
Monthly
$10.22
Annual
$123
20-Year
$2,452
Energy Saving Tips for Gas Furnace in Rockford
- ✓Rockford electricity rates are 31% above the national average — energy efficiency matters more here.
- ✓An ENERGY STAR Gas Furnace in Rockford saves ~$18/year compared to standard models.
- ✓A smart Gas Furnace with scheduling optimization can save ~$18/year at Rockford rates.
- ✓Replace air filter every 3 months
- ✓Seal ductwork leaks
- ✓Schedule annual maintenance
ENERGY STAR Savings: Upgrading to an ENERGY STAR Gas Furnace in Rockford saves approximately $18/year at local rates — $368 over the appliance lifetime.
Highest-Cost Appliances in Rockford, IL
See which appliances cost the most to run at Rockford's 17.0¢/kWh electricity rate.
Level 2 EV Charger (240V)
Transportation · 7,200W
$2,207/yr
$183.92/mo
Electric Furnace
HVAC · 10,000W
$1,533/yr
$127.73/mo
Electric Tankless Water Heater
Water Heating · 18,000W
$1,119/yr
$93.24/mo
EV Charger (Level 2)
Garage · 7,200W
$1,104/yr
$91.96/mo
Boiler (Electric)
HVAC · 6,000W
$920/yr
$76.64/mo
Electric Water Heater (Tank)
Water Heating · 4,500W
$839/yr
$69.93/mo
Water Heater (Tank Electric)
Water Heating · 4,500W
$839/yr
$69.93/mo
Heat Pump
HVAC · 2,400W
$654/yr
$54.50/mo
Gas Furnace Cost in Other Illinois Cities
| City | Rate | Annual Cost | vs Rockford |
|---|---|---|---|
| Rockford (current) | 17.0¢ | $123 | — |
| Chicago | 16.6¢ | $120 | $-3 |
| Aurora | 15.0¢ | $108 | $-15 |
| Joliet | 14.4¢ | $104 | $-19 |
| Naperville | 14.6¢ | $105 | $-17 |
| Elgin | 13.6¢ | $98 | $-25 |
| Springfield | 15.9¢ | $114 | $-8 |
| Peoria | 16.9¢ | $121 | $-1 |
| Waukegan | 14.3¢ | $103 | $-20 |
Methodology & Energy Data Sources for Rockford
How we calculate gas furnace energy costs in Rockford, IL: Cost estimates use the standard formula: Annual Cost = (Wattage ÷ 1000) × Hours per Day × Days per Year × Local kWh Rate. We model regional electricity rate variation using EIA monthly data, which captures rate differences between investor-owned utilities, municipal providers, and rural electric cooperatives.
- Appliance wattage sourced from ENERGY STAR product database, manufacturer spec sheets, and DOE residential appliance test data.
- Local kWh rate for Rockford reflects Illinois averages from EIA Form 861 (utility sales data). Rates vary by season (typically 10-20% summer premium) and time-of-use in many Illinois utilities.
- Usage patterns derived from RECS (Residential Energy Consumption Survey), EIA's official survey of US household energy use.
- Carbon footprint calculated using EPA eGRID emissions factors specific to your regional grid mix in Illinois.
Authoritative US energy data sources:
- EIA Electric Power Monthly — official US electricity rate data by state
- EIA Residential Energy Consumption Survey (RECS) — household appliance usage patterns
- ENERGY STAR Product Finder — efficiency ratings for gas furnaces
- DOE Energy Saver — Electricity — official tips and appliance comparison
- EPA eGRID — Regional Emissions — carbon intensity by grid region
- EIA State Energy Profiles — Illinois — generation mix, prices, and consumption
Disclaimer: Energy costs are estimates based on average appliance usage and Illinois state-level kWh rates. Your actual costs depend on your specific utility provider, rate plan (flat, time-of-use, demand), local fees, taxes, and renewable energy credits. Check your utility bill for exact rates. For energy efficiency upgrades, consult your local utility's rebate programs and federal tax credits via ENERGY STAR Federal Tax Credits.
Reviewed by Brazora Monk · Last updated 2026 · EIA data current as of latest monthly release
Find Your Utility, Rate Plan & Incentives in Rockford
The Illinois state-average kWh rate shown above is a baseline — your actual cost depends on your specific utility provider, rate plan, and time-of-use schedule. Plus you may be missing rebates that pay for ENERGY STAR replacements:
Each utility has its own rate plans (flat, TOU, demand):
- • EIA — Find Your Utility (by ZIP)
- • EIA Illinois State Profile
- • Time-of-use can save 20-40% if you shift heavy use to off-peak
Inflation Reduction Act provides ongoing credits:
- • ENERGY STAR Federal Tax Credits
- • 30% on solar/battery storage through 2032
- • Up to $2,000 heat pump credit annually
- • DOE — Federal Rebate Programs
State + utility-specific rebates stack with federal:
- • DSIRE — Illinois Incentive Database
- • DOE State Energy Program
- • Many utilities offer $50-500 rebates on ENERGY STAR appliances
Replace efficient = save 25-50% kWh:
NABCEP-certified installers for solar/battery: NABCEP Certified Professionals Directory. Required for many state incentives.
Gas Furnace Energy Cost FAQ — Rockford, IL
Understanding Gas Furnace Energy Costs in Rockford, IL
Rockford is a mid-sized Illinois city where residential electricity rates from ComEd are shaped by regional energy supply and local demand patterns. Running a moderate-draw appliance like the Gas Furnace (600W) at Rockford's rate of 17.0¢/kWh costs approximately $123 per year — $29 more than the national average of $94.
Electricity in Rockford is significantly more expensive than the national average — 31% higher. For a Gas Furnace used 8 hours per day, this rate premium adds up to $29 in extra annual costs. Energy-efficient models and usage habits have an outsized impact in high-rate markets like this.
Rockford's cost of living index of 92 is below the national average, and electricity costs reflect that affordability. The Gas Furnace adds $10.22/month to a typical bill of $109. Upgrading to an ENERGY STAR Gas Furnace can cut energy use by up to 15%, saving approximately $18 per year at Rockford rates.
Rockford's moderate climate (avg 48.6°F) helps keep seasonal energy cost swings manageable for most appliances. A Gas Furnace produces approximately 3.2 tons of CO2 annually at typical usage. Rockford residents can reduce this footprint by choosing an ENERGY STAR certified unit, optimizing usage patterns, or investing in solar — see our solar savings calculator for Rockford.
Compare All Energy Costs in Rockford
See energy costs for 178+ household appliances at Rockford's local electricity rate.
Frequently Asked Questions
How much does it cost to run a Gas Furnace in Rockford, IL?
At Rockford's average electricity rate of 17.0¢/kWh, a Gas Furnace costs approximately $123 per year to run. That's about $10.22 per month with typical usage of 8 hours per day.
What is the electricity rate in Rockford, IL?
The average residential electricity rate in Rockford, IL is 17.0¢/kWh, which is 31% above the national average of 13.0¢/kWh. The primary utility provider is ComEd.
How much electricity does a Gas Furnace use per year?
A Gas Furnace uses approximately 600 watts and consumes about 720 kWh per year with typical usage of 8 hours/day for 150 days/year.
Is a Gas Furnace expensive to run in Rockford?
Compared to the national average cost of $94/year, running a Gas Furnace in Rockford costs $29 more per year due to higher local electricity rates.
How can I reduce my Gas Furnace energy cost in Rockford?
To reduce Gas Furnace costs in Rockford: Replace air filter every 3 months. Seal ductwork leaks. Upgrading to an ENERGY STAR model saves up to 15% on energy costs. Also check with ComEd for local energy efficiency rebates and programs.