Our Story

When you walk into our factory and headquarters in Oakmont, PA, the name on the front door reads Thermo-Twin Windows. But it could also just as easily read Bob, Dave, Natalie, Kevin or dozens of other names. Because while Thermo-Twin Windows is our corporation’s name, the heart, hands and brains are the employees who own the company. We’re the ones who individually craft every window that goes through our assembly line. We’re also the folks installing them throughout your home or sunroom. When you choose Thermo-Twin Windows, you’re benefiting from the best name in windows. Actually, all of the names that have defined Thermo-Twin Windows as a premier window manufacturing company for more than 50 years.