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Calculate your potential savings from new energy-efficient windows in St. Louis, MO.
Climate: 4,000 HDD / 1,500 CDD
Standard window: 12-15 sq ft, Large picture window: 25-40 sq ft
U-Factor: 1.2
U-Factor: 0.3 • Energy Star Eligible
Annual Savings
$446
/year
Project Cost
$8,400
installed
Payback Period
18.8 years
to break even
25-Year Savings
$2,750
net lifetime
Environmental Impact
Reduce your carbon footprint by 2,931 lbs CO₂ per year — equivalent to planting 61 trees annually.
Federal Tax Credit Available
Energy Star windows qualify for up to $600 in federal tax credits (30% of cost, up to $600). This could reduce your payback period by 1.3 years.
Savings estimates based on U.S. Department of Energy calculations and local climate data. Actual savings vary based on home insulation, HVAC efficiency, and usage patterns. Professional energy audit recommended for accurate projections.
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ASHRAE design conditions for 00006
Average costs in St. Louis
Typical homes in 00006
Federal Energy Efficiency Tax Credit
federal incentive • Expires 2032-12-31
Up to $2,000
Windows service calls in St. Louis, MO typically range from $310 to $460 for standard repairs. Emergency service is available 24/7 at approximately $540.
Yes, most windows work in St. Louis County requires a permit. The average permit cost is $75. Our licensed contractors handle all permit requirements.
Our network of 15+ licensed contractors in the St. Louis area offers average response times of 45 minutes. Emergency service is available 24/7.