Replacement Door Installation EXPERTS IN CT
At J.C. Tonnotti Window Company, we provide expert door installation and replacement services to enhance the security, energy efficiency, and aesthetics of your home. We specialize in high-quality
entry doors, interior doors, and cellar doors, ensuring long-lasting durability and style. While we do not offer door repair services, we do provide repairs for doors we have previously installed. We proudly install
Therma-Tru entry doors and
Harvey storm doors, ensuring premium quality and performance for every project.
For more information about our services or to book a free estimate, give us a call at (860) 621-1642 or complete the form below and we will get back to you.
TYPES OF DOORS WE REPLACE:
REPLACING Entry Doors
Your entry door is the focal point of your home’s exterior, making a statement while offering protection and energy efficiency. At J.C. Tonnotti, we install Therma-Tru entry doors, known for their superior durability, insulation, and design versatility. Whether you want a classic wood-grain look, modern fiberglass, or steel-reinforced security, we provide a range of customizable options to match your home’s aesthetic and performance needs. We also install Harvey storm doors, which offer added protection, energy efficiency, and ventilation options to complement your entryway.
REPLACING Interior Doors
Interior doors play a key role in defining the flow and functionality of your home. We offer a variety of high-quality interior doors in different materials, finishes, and styles, allowing you to enhance privacy, reduce noise, and elevate the look of your living space. From traditional panel doors to sleek, modern designs, J.C. Tonnotti ensures a professional installation for seamless operation and long-term durability.
REPLACING Cellar Doors
A sturdy, well-installed cellar door is essential for basement access, security, and weather protection. We install durable, weather-resistant cellar doors designed to keep moisture and debris out while providing easy access to your basement or storage area. Our cellar doors come in various styles and finishes, ensuring a perfect fit for your home while enhancing safety and efficiency.
For expert door installation and replacement in Connecticut, trust J.C. Tonnotti Window Company to provide top-quality products and expert craftsmanship.
📞 Call us today at (860) 621-1642 or schedule a free consultation online at jctonnotti.com.
GET A FREE ESTIMATE
For more information about our services or to book a free estimate, give us a call at (860) 621-1642 or complete the form below and we will get back to you.

Trusted by Homeowners Across Connecticut
Real reviews from satisfied customers who love our craftsmanship, quality, and service.
WHY CONNECTICUT HOMEOWNERS CHOOSE JC TONNOTTI
True In-House Crews – No Subcontractors
Unlike many competitors who outsource labor, J.C. Tonnotti employs full-time, in-house crews for every project. This ensures consistent quality, expert craftsmanship, and accountability from start to finish—giving homeowners peace of mind knowing exactly who is working on their home.
Complete One-Stop Exterior Remodeling
From windows and doors to roofing, siding, and sunrooms, J.C. Tonnotti measures, designs, installs, services, and warranties every project under one roof. Customers don’t have to juggle multiple contractors—we handle everything with professional trucks, expert installers, and dedicated office staff to ensure a seamless experience.
40+ Years of Local, Family-Owned Excellence
Founded in 1979, J.C. Tonnotti has been a trusted name in exterior remodeling for over 40 years. Unlike newer companies that come and go, we’ve built a strong reputation in Connecticut, operating from the same Southington location for decades. Homeowners choose us because they know we’ll be here to stand behind our work for years to come.
Fast, Professional Installations with Strong Warranties
Our team specializes in efficient, high-quality installations—often completing projects like window and roof replacements in just one day. We also back our work with manufacturer warranties and our own service guarantees, so customers can trust their investment is protected for the long haul.