Colorado Window Source is your Denver , Colorado source for vinyl replacement windows, James Hardie Siding, doors, roofing & all home improvement needs.

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Colorado Window Source features our Tru-Warranty System:

Tru- Warranty:  We personally follow up on your project after 3 months, 6 months and one year to ensure your complete satisfaction.  Our lifetime-warranty on materials and installation is our guarantee and signature of quality.

Tru-Choice:  Our selection of affordable quality brand-name products ensures a variety of choices for you.
- We offer the most extensive and modem choices in color & style.
- Our popular wood finishes compliment today's home designs.

Tru-Price: We hope to earn your buisness by keeping our Tru-Price Promise.
-You will always receive our best competitive estimate and price.
-You can expect a simple, fast and comfortable quote experience with our "Quick Quote" in 30 minutes or less.

Tru-Fit: Our exclusive fitting system and professional installation methods deliver an outstanding product.
-Precise measuring ensures the right fit and maximizes your energy savings.
-Expert installation methods ensure a fit you can trust.

The experts at Colorado Window Source sell, install and warranty all sorts of exterior home improvement projects.  Window replacements, siding, gutters, decks and patios and we know how to bring real value to you our customers.  We manage projects big and small from simple gutter jobs to complicated multi-family projects.  We know how to bring our customers professional installation and real value.

Colorado Window Source is a leading replacement window contractor in the Denver Metro area.  We are one of a few Denver, Colorado window companies that has an A+ Better Business Bureau rating.

Replace your worn out windows with our energy efficient replacement window and make your home more comfortable while you lower your heating and cooling bills. 

James Hardie Siding systems will make your house look great, save you energy, add comfort and value to your home.

Visit our showroom located @ 1390 W Evans Avenue, Unit D, Denver, CO 80223 
Monday - Thursday 9am-4pm
Friday  9am-4pm
Saturday 10am-2pm. Before or After hour appointments available everyday.

Need A Free Fast Quote?  Click Here Or The Quote Button Below:

  • "It has been about 8 years and we are still very happy with the quality of the windows. They have lowered our cooling costs dramatically in the summer months and have lowered our heating bills by about 20% ( could have been more if we had all 27 windows replaced) in the winter. When we close our windows, our house is very quite and comfortable. I have recommended Colorado Window Source to a few friends who used them to replace their windows in Denver. Colorado Window Source sent me a $200 check to say thanks for the referrals. I highly recommend Colorado Window Source to my friends and people that I meet who mention they need replacement windows."

  • "Good Customer Service, prompt service, good personal attitude."

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1390 W Evans Avenue, Building 1, Unit D, Denver, CO 80223 - 720-200-2700
Monday - Thursday 9am-6pm, Friday  9am-4pm, Saturday 10am-2pm. Before or After hour appointments available everyday.