Replacement Doors

Three Sons Windows & Doors uses only the highest quality products by Harvey, Paradigm, Pella and Therma-Tru. Replacing your doors can help increase the energy efficiency of your home. Find out more about our energy Star certified products by speaking with one of our team today. We can help you choose the right replacement doors to ensure your home stays cool in the summer and warm in the winter.

pella door


Pella is an innovative leader in designing, testing and manufacturing quality windows and doors for new construction, remodeling, and replacement applications. Pella is known for its 84-year history of making outstanding products, providing quality service and delivering on customer satisfaction. Pella is committed to incorporating new technologies and earned the U.S. Department of Energy’s ENERGY STAR Partner of the Year award in the windows category for the past four consecutive years and now proudly continues its environmental leadership as a Sustained Excellence award winner in 2010.

Paradigm logo


Paradigm windows are designed and fabricated in Portland, Maine. Paradigm’s full line of vinyl windows are built for a lifetime of performance, featuring fusion-welded sash and frame, and industry leading weather stripping for maximum durability. All Paradigm windows offer a Climate Control Glazing™ System with a high-performance thermal coating, warm edge spacer technology, and excellent condensation resistance. Paradigm Window Solutions offers the industry’s leading coverage on all of their windows. They back up their product with the only manufacturer-provided labor warranty in the industry.

Therma True logo



Therma-Tru was established in 1962 by David Welles, a retired Owens Corning executive. In 1982, the company launched its Fiber-Classic style, the first fiberglass door on the market. The innovative product looked as beautiful as wood but performed with the durability of steel. Revolutionary industry products are what you can expect from Therma-Tru, the nation’s leading manufacturer and most preferred brand of fiberglass and steel exterior door systems