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Calculate your potential savings from new energy-efficient windows in Knoxville, TN.
Climate: 4,379 HDD / 1,879 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
$507
/year
Project Cost
$8,400
installed
Payback Period
16.6 years
to break even
25-Year Savings
$4,275
net lifetime
Environmental Impact
Reduce your carbon footprint by 3,331 lbs CO₂ per year — equivalent to planting 69 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 1.2 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 37940
Average costs in Knoxville
Typical homes in 37940
Federal Energy Efficiency Tax Credit
federal incentive • Expires 2032-12-31
Up to $2,000
Windows service calls in Knoxville, TN typically range from $386 to $536 for standard repairs. Emergency service is available 24/7 at approximately $654.
Yes, most windows work in Knoxville County requires a permit. The average permit cost is $75. Our licensed contractors handle all permit requirements.
Our network of 19+ licensed contractors in the Knoxville area offers average response times of 64 minutes. Emergency service is available 24/7.