This morning, I completed a window and patio door replacement project at a local residence. In the master bedroom, I carefully removed the old, single-pane windows and installed two new Pella Lifestyle Series double-hung windows. These energy-efficient units feature Low-E glass and argon gas fills to improve thermal performance. For the sliding glass door in the living room, I first diagnosed and repaired the malfunctioning rollers and locking mechanism. I then replaced the entire door assembly with a premium Andersen 400 Series unit. The new door operates smoothly and provides enhanced security and weather sealing. The homeowners are now enjoying improved comfort, functionality, and energy savings throughout their home.