How much can I save with new windows in Mercer Island, WA?

Energy-efficient windows can save homeowners in Mercer Island, WA 10-25% on annual energy costs. With 4000 heating degree days and 1500 cooling degree days annually, quality windows make a significant difference.

What windows are best for the Washington climate?

For homes in Mercer Island, WA, we recommend double or triple-pane windows with low-E coating. Given your climate (design temps: 20°F winter, 92°F summer), Energy Star certified windows provide the best performance and potential rebate eligibility.

Mercer Island, WA 00003

Windows Services in 00003

Professional windows services for Mercer Island, Washington. Licensed contractors serving ZIP code 00003 and surrounding areas.

Avg. Service Cost

$504

Avg. Response

45 min

Design Temp

92°F

Building Code

2018

Window Energy ROI Calculator

Calculate your potential savings from new energy-efficient windows in Mercer Island, WA.
Climate: 4,000 HDD / 1,500 CDD

Number of Windows

Average Window Size (sq ft)

15 ft²

Standard window: 12-15 sq ft, Large picture window: 25-40 sq ft

Current Window Type

U-Factor: 1.2

Upgrade To

U-Factor: 0.3 • Energy Star Eligible

Frame Material

Annual Energy Bill ($)

$2,400

Your Savings Estimate

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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Windows Data for 00003

Climate Data

ASHRAE design conditions for 00003

Summer Design Temp92°F

Winter Design Temp20°F

Heating Degree Days4,000

Cooling Degree Days1,500

Annual Rainfall35"

Local Pricing

Average costs in Mercer Island

Standard Service Call$504

Emergency Service$756

Permit Cost (avg)$150

Market Demandpeak

Housing Stats

Typical homes in 00003

Avg Home Size1,600 sq ft

Avg Home Age30 years

Median Value$250,000

Building Code2018

Energy CodeIECC 2021

Available Rebates for 00003

Federal Energy Efficiency Tax Credit

federal incentive • Expires 2032-12-31

Up to $2,000

Frequently Asked Questions

How much does windows service cost in Mercer Island?

Windows service calls in Mercer Island, WA typically range from $454 to $604 for standard repairs. Emergency service is available 24/7 at approximately $756.

Do I need a permit for windows work in 00003?

Yes, most windows work in Mercer Island County requires a permit. The average permit cost is $150. Our licensed contractors handle all permit requirements.

How quickly can I get service in 00003?

Our network of 15+ licensed contractors in the Mercer Island area offers average response times of 45 minutes. Emergency service is available 24/7.

Nearby Landmarks We Serve

Mercer Island Community CenterMercer Island High SchoolDowntown Mercer Island

Ready for Windows Service in 00003?

Connect with licensed windows contractors serving Mercer Island, WA. Available 24/7 for emergencies.