Windows Installation

303-WINDOWS provides premier window installation service for homes in Denver and across the Colorado Front Range. We’ve served the Denver area for almost 30 years, with the same owners in the same location since 1995.

Our vast experience as professional installers make us Denver’s choice for home window projects. Contact us today for residential vinyl window installation.

Types of Residential Window Installation Projects

We manage all types and scopes of home window installation and replacement projects with quality work and a large selection of vinyl windows styles.

Vinyl Replacement Window Installation

Upgrade to vinyl windows for your Colorado home. Whether your current windows have reached the end of their lifespan or you want to update your home’s design style, window replacement adds value to your home.

We offer top-quality vinyl windows installed by our experienced professional installation team. We remove and dispose of your old windows as part of the replacement process. With a full-frame replacement window, installation includes placing the new window along with the sills and trim.

Window Installation for Renovations and Home Additions

Home renovations and additions add value and enhance your space. New windows offer a great option to upgrade your renovation. We offer replacement windows and new window installations. Our team can enlarge an existing window opening to allow for a larger window or transition the window opening to a patio door.

We are happy to work directly with the homeowner or your project contractor on window installation for home makeovers. Our team has worked on a wide range of projects and is happy to discuss window expansion ideas during your design process.

Window Installation for New Construction

Build your home right from the start with quality vinyl windows. Unlike builder grade windows that are thinner and don’t have structural reinforcement, we use replacement grade windows that offer greater structural integrity and more durability.

We work on custom home construction projects where the homeowners want to install high-quality vinyl windows. We can install windows for custom homebuilding projects or sell the windows for your contractor to install.

The Vinyl Window Installation Process

303-WINDOWS makes window installation easy for homeowners. We customize each project to match your unique needs; however, each project follows a few consistent steps.

Step 1 – Initial consultation – We discuss the project’s scope, including style, size, and the number of windows.
Step 2 – Custom Quote – We prepare a written cost estimate for each project.
Step 3 – Measure and Order – We professionally measure the window openings to ensure proper fit, then order the windows for your home.
Step 4 – Schedule Installation – We schedule the installation based on your project needs, the arrival of the windows, and our project schedule.
Step 5 – Remove the Old Windows – Our team removes and disposes of the existing windows.
Step 6 – Install New Windows – Our team installs the new windows, including sills, trim, and weatherstripping.

We prioritize customer service and clear communication. If you have questions or need additional information at any point in the process, we are happy to help.

Energy Efficient Window Installation Service

Today’s replacement vinyl windows offer excellent energy efficiency. We install Anlin windows, which have ENERGY STAR ratings due to their energy-saving technology. Gain peace of mind knowing your new windows are not only beautiful but also help you save money on energy costs.

Outstanding thermal performance
Reduced heat transfer, with low U-Factor and low Solar Heat Gain Coefficient (SHGC)
High performing glass, with Low-E glass and next generation glazing system options
Window frames architecturally engineered for superior energy efficiency
Triple-fin weatherstrip provides a weather-tight seal to prevent air leaks

Anlin windows have certification from the National Fenestration Rating Council (NFRC) and American Architectural Manufacturers Association (AAMA). Both certifications indicate industry-leading excellence in window design, function, and energy efficiency.