Replacement Windows

Welcome to Window World, the largest window replacement company in America! Window World of Hartford is locally owned and operated by Anton Du Plessis, and proudly serves all of Connecticut. We offer almost limitless replacement window options, including frames, grids, styles, glass options, and Low-E qualifications. We also offer many other industry-leading home-improvement products.

Quality Windows: Top 10 Reasons WhyNew replacement vinyl windows, doors, and vinyl siding can make a major improvement to your home's external appearance, as well as increase energy efficiency and property value. Window World of Hartford's new replacement windows are sure to turn a few heads, as your home will look like it is the newest, sleekest, and most modern home on the block.

Our superior line of products, as well as our top-of-the-line customer service has earned us many distinguished awards, including the coveted Good Housekeeping Seal, EnergyStar Certification, and EPA Lead-Safe Certification. So next time you see a home with beautiful new windows in your neighborhood, ask who installed them. The answer will probably be Window World of Hartford! Contact us today, to schedule your free in-home demo, your home will thank you!

We're proud to be named the #1 Home Improvement Contractor in the Nation from "Qualified Remodeler Magazine," selling over 1 million windows annually since 2007. In 2010, we helped contribute to Window World Inc selling and installing an all-time company high in replacement windows, eclipsing over 1.8 million windows nationwide!