ClimateGuard UltraView GREAT WINDOW
STANDARD FEATURES DELIVER EXCEPTIONAL VINYL PERFORMANCE Our UltraView vinyl window series offers a broader selection of design options with improved structural performance & energy efficiency. EXPLORE ULTRAVIEW WINDOW SERIES UltraView Window Cutaway
ClimateGuard ProSource Logo THE
OUR MOST AFFORDABLE OPTION, AVAILABLE IN ONE WEEK The competitively priced, easy care ProSource vinyl window series is the builder’s clear choice for remodeling or new construction with basic design styles & features to fit most any budget. EXPLORE PROSOURCE WINDOW SERIES

ClimateGuard Windows

Add beauty, value, and energy savings with ClimateGuard Windows and Doors. Operating on Chicago’s North Side since 1975, we manufacture all of our windows, doors, and ornamental ironwork in our local facility. Whether you’re a homeowner or contractor in need of new or replacement windows in Chicago, our selection is unmatched. Explore ClimateGuard Windows and discover a wide variety of styles, shapes, and operating types to complement your home.

Window Series

We offer three distinct product lines of new and replacement windows made in Chicago. Each line is designed to accommodate a certain budget, level of performance, aesthetic appeal, and architectural style. Regardless of your home’s requirements and your personal tastes, you’re certain to find the ideal window for your space. Browse our window series to find the product that’s right for you.

Competitively Priced, Low Maintenance Vinyl
  • Most affordable option
  • Standard construction & design features with quality craftsmanship
  • Easy care vinyl

Stronger & More Durable, Quality Vinyl
  • Superior Durability
  • Our most popular design features & options deliver a more quality look
  • Exceptional Energy Efficiency

Top-of-the-line Performance & Customization
  • Industry leading energy efficiency, structural & thermal performance
  • Virtually impervious to weather conditions
  • Design pressure rating of DP50




Quality, Durable Vinyl

Quality Laminate

Low Maintenance

Interior Finishes

2 solid vinyl extrusion colors

3 solid vinyl extrusions colors, 1 wood finish

3 solid vinyl extrusions colors, 3 wood finishes

Exterior Finishes

2 solid vinyl extrusion colors

3 solid vinyl extrusion colors, 5 paint colors

3 solid vinyl extrusion colors, 1 laminate


.24 U-Factor

.21 U-Factor

ClimateGuard Windows
.19 U-Factor

Thermal Performance

uShield Glass Packages

ClimateGuard Windows offers three performance glass packages designed to best meet your needs for cost, function, energy efficiency & thermal performance.

Request an Estimate

Tell ClimateGuard Windows about your replacement window project & we’ll get your our best pricing on your project.

Where to Buy

Visit our window factory on the North Side of Chicago or shop at one of our showrooms in the city & suburbs.
Learn more about ClimateGuard! Check out our new TV commercial.

ThermaForce Windows

Superior Thermal Performance
Our most energy efficient window with features and design options to fit your lifestyle
  • Outstanding energy efficiency, structural & thermal performance
  • Distinctive style options
  • Virtually impervious to weather conditions

Innergy Rigid Thermal Reinforcements

Energy-efficient alternative to aluminum
Advanced fiber glass reinforced resin inserts designed to slide easily into window frame chambers for greater support and insulation.
  • Up to 700 times better than aluminum in material-to-material comparisons
  • Helps prevent staining that can occur with metal reinforcements
  • Improved resistance to impact versus other reinforcement products

Cardinal Neat Glass

Naturally clean glass
Harnesses the sun’s UV rays to loosen dirt so water can rinse it away, leaving windows virtually spotless.
  • Allows more visible light transmittance than any comparable competitive product
  • Enjoy year-round comfort inside the home and an average of 25% energy savings annually
  • Allows water to disperse evenly or “sheet off” and evaporate quickly, greatly reducing water spotting

Chicago’s Premiere
Vinyl Windows

Chicago’s leading window manufacturer since 1975
With millions of windows in homes and buildings across the region, Climate Guard windows stand up to Chicago’s toughest weather.

We offer a quality window at a great price, backed by a lifetime warranty and our commitment to service.

Get your Energy Star windows made in less than two weeks.