Energy-Efficient Window Replacement in Madison, WI
Your complete guide to Wisconsin energy codes, climate zone requirements, and window installation
Quick Facts: Madison Window Replacement
Average Costs
- • Full installation: $425-1,110 per window
- • Double-pane: $375-740
- • Typical time: 2-3 weeks
Energy Requirements
- • Climate zone: IECC Zone 6A (Cold-Humid)
- • U-factor: U-0.30 or lower for residential windows
- • 40+ certified installers
Madison's Humid Continental (Cold) Climate & Energy Needs
Summer Average
82°F (28°C)
Winter Average
16°F (-9°C)
Heating Days
7,700
Cooling Days
700
Climate Zone: IECC IECC Zone 6A (Cold-Humid)
Climate Challenges for Windows
- ▸Cold winters with frequent -10°F to -20°F extremes
- ▸High humidity increases condensation risks
- ▸Ice damming and freeze/thaw damage common
- ▸High heating costs drive energy-efficient upgrades
- ▸University and state government buildings need retrofits
- ▸Moisture infiltration during spring thaw
Wisconsin Energy Code Requirements
Energy Code
Wisconsin adopts IECC 2018
U-Factor Requirement
Windows must meet U-0.30 or lower for residential windows maximum. Lower is better for insulation.
Solar Heat Gain (SHGC)
No specific SHGC requirement to reduce cooling costs.
Permits
Wisconsin requires building permits for window replacement. Installer should handle permits and inspections.
Frequently Asked Questions
How much does window replacement cost in Madison?
Full installation: $425-1,110 per window per window. Double-pane glass: $375-740. Pricing depends on size, type, and energy ratings required by IECC Zone 6A (Cold-Humid).
What are common window problems in Madison?
- Condensation and frost in winter months
- Ice damming damaging window frames
- Seal failure from cold and humidity
- Mold growth from condensation
Should I choose double-pane or triple-pane?
Triple-pane recommended for Madison's cold climate (7700 heating days). Cuts heating costs 20-30%.