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Customer Reviews Talk BubbleListen to What Our Customers Are Saying

  • "We had a great experience working with Window World. We received a great quote for windows all over my home. The windows came in earlier than expected and they were willing to install right away. The installers were professional, respectful and efficient. We received great customer service from the entire team and were very happy with the product. Many thanks to the Window World team."
    - Mariane M.
  • "Window World definitely stands behind their work and guarantees!!! Customer service is outstanding!!! Laura was very professional and courteous. My recent window replacement went very smooth. The installer was friendly, on time, very fast and thorough. I would highly recommend Window World. Great product and service."
    - Marie M.
  • "Punctual, personable, polite, professional. Had 7 windows installed today. 3 guys, two hours and not a speck of dust left behind. If the windows perform as well as the installers, it'll be true perfection!"
    - Donna D.
  • "Window World was a delight to work with, from office staff, salesman, and installer. The installation went smoothly - installer was thorough, fast (really knew his stuff), and neat. Would recommend highly."
    - Linda L.
  • "From the time I called to report my problem I was treated with respect and with courtesy. The technician arrived at the scheduled time, pleasant and clean. The window was replaced with no problem. Overall my experience was great from the beginning. I was very satisfied."
    - Grace B.
  • "Very professional and everything looks great. The office called twice during the installation to see how things were going. Would definitely recommend."
    - Kim W.
  • "I was very impressed with the whole process. From the sale to installation. Window World’s customer service is fantastic. The installation was done in a day. Couldn’t ask for better performance from AJ and his crew. Milton was very professional and made the install look effortless. Brenda, you are very accommodating as well. Thank you for that."
    - Tom M.
  • "We are very happy with the entire process with Window World! From the initial quote through the installation process, the entire team was responsive and attentive to our needs. We will definitely be recommending them to our family and friends!"
    - Louis Z.
  • "Extremely happy with my windows and patio door! From sales, to installation, to job completion everyone at Window World is very professional and willing to go the extra mile to ensure customer satisfaction. Don’t waste your time looking at other companies - you won’t regret your decision. Highly recommend them!"
    - Michael S.
  • "We had a great experience with Window World. From John who initially came out to our house, to Priscilla, Candi and Brenda in the office, to Anton and his crew that did the install, we were satisfied from beginning to end. I highly recommend them if you want new windows."
    - Gregory V.

Replacement Windows Hartford, CT

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.

New 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.

Quality Windows: Top 10 Reasons WhyOur 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!