About Us

J. C. Tonnotti Window Company

Since 1979 the J. C. Tonnotti Window Company Inc. has been a family-owned and operated general contracting business in Southington, Connecticut.

The company specializes in exterior home improvements geared to increasing your home’s energy efficiency and retaining its value.

In addition to replacement windows and replacement doors, J.C. Tonnotti has expanded to include an array of home improvement services and Old Yankee Painting.

J. C. Tonnotti Window Company - Faith and Joe Tonnotti

Joe and Faith Tonnotti, owners of the J. C. Tonnotti Window Company stand behind the motto "A Name You Can Rely On".

Licensed & Insured Home Improvement Company

As a fully Licensed (#0614190) and insured home improvement company, we have installed energy-efficient exterior home improvements including windows and doors since 1979.

Our team of general contractors are also experienced in installing 3 season sunrooms, hanging shutters, connecting seamless gutters, building vinyl siding, renovating historical sites, and repairing rotted wood.


Our company is certified by the United States Environmental Protection Agency as a Lead-Safe Certified Firm. We have fulfilled the requirements of the Toxic Substances Control Act (TSCA) and have received certification to conduct lead-based paint renovation, repair, and painting activities.

Qualified Crew

Our team of home improvement specialists includes general contractors, window and door installers, painters, power washers, can carpenters. …read more about the JCT crew highly trained Lead Certified installers are all directly employed and not sub-contractors.

Quality Customer Service - We’re not happy unless our customers are happy! Because of our customer-first policy, J. C. Tonnotti Window Company, Inc. has established itself as one of Connecticut’s leading replacement window and home improvement companies. To achieve our goal of customer satisfaction, we remain dedicated to the philosophies that have inspired Joe and Faith Tonnotti since they created the company.

Our mission is to strive to:

  • use the best materials
  • train and work with superior craftsmen
  • completely satisfy our customers
  • avoid shortcuts that compromise the integrity of your home
  • install only quality windows, doors & 3 season rooms.

Competitive Pricing - We offer special discounts to senior citizens and provide tailor-made financing to fit everyone’s budget. Join our e-Club to stay informed about specials and promotions. Check out our Specials Page & Web Site Coupon!

Contact J. C. Tonnotti Window Company to discuss your home improvement needs.