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Calculate your potential savings from new energy-efficient windows in Durham, NH.
Climate: 7,277 HDD / 777 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
$652
/year
Project Cost
$8,400
installed
Payback Period
12.9 years
to break even
25-Year Savings
$7,900
net lifetime
Environmental Impact
Reduce your carbon footprint by 4,284 lbs CO₂ per year — equivalent to planting 89 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 0.9 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 27702
Average costs in Durham
Typical homes in 27702
Federal Energy Efficiency Tax Credit
federal incentive • Expires 2032-12-31
Up to $2,000
Windows service calls in Durham, NH typically range from $378 to $528 for standard repairs. Emergency service is available 24/7 at approximately $642.
Yes, most windows work in Durham County requires a permit. The average permit cost is $75. Our licensed contractors handle all permit requirements.
Our network of 17+ licensed contractors in the Durham area offers average response times of 52 minutes. Emergency service is available 24/7.