Haddon Windows LLC manufactures highly energy efficient replacement windows and doors though our dealer network to homeowners. Our quality driven manufacturing process creates custom-built windows and doors for a perfect fit in your home. Our typical window starts with our blend of 100% virgin vinyl powder which we extrude into our proprietary multi-chambered frame, add our own double-pane or triple-pane insulating Low-E glass and finish with durable quality hardware and balance. We offer one of the best warranties in the industry, providing you peace-of-mind that our family run business is here to protect your family. We offer a wide range of energy-efficient double-hung, single-hung, garden-bay, bow and slider windows along with patio and entry doors which have proven performance installed in over 500,000 homes. We are a proud ENERGY STAR partner, member of the U.S. Green Building Council and offer a R-5 rated window. Our "green collar" employees are proud to custom-build the best quality energy efficient value-priced windows and doors available that often outperform Pella, Andersen, Marvin and other fine windows. Based just outside Philadelphia, Pennsylvania, we serve customers east of the Mississippi River with dealer locations in New Hampshire, Rhode Island, Boston, New York City, Cleveland, Chicago; Columbus; Pittsburg; Washington D.C.; Maryland; Virginia; North Carolina; Atlanta, Georgia, Florida, Tennessee, Alabama, Delaware, New Jersey, Ohio and South Carolina and we add new dealers regularly. Haddon Windows LLC purchased the assets of Accu-Weld LLC and Speyer Door and Window in 2009.