Window size and frequency is just as important on the east-, west- and north-facing walls. The photo below shows our north-facing wall. The windows on this wall are smaller and fewer than those on the south wall, on purpose. As our house sits, much of the winter winds come from this direction. Also, north-facing windows take in little solar heat. Therefore, they will mainly be used to provide ample daylight in back rooms of the house.
Our windows have a low-emissivity coating on them, which means they are a bit more expensive than regular windows, but according to the U.S. Department of Energy, they reduce energy loss by as much as 30-50%. They also meet or exceed Energy Star guidelines.
Originally, we were going to install Marvin windows in our house. But when we compared the Marvin/Pella windows side-by-side, we realized we could get the same quality windows for a heck of a lot cheaper.
I was also pleased to see a whole section on Pella’s Web site dedicated to their “green commitment.” Here’s what they say they are doing to help the environment:
- Recycling — Pella’s process minimizes our use of nonrenewable resources.
- Responsible Procurement — Pella uses sustainable sources and works with vendors who practice responsible harvest and replenishment.
- Pollution Minimization — In 2006, the EPA recognized Pella with its Pollution Prevention for Environmental Excellence Program honorable mention award for our responsible manufacturing processes.
- Reducing Energy Consumption — Pella offers the windows and doors rated #1 for energy efficiency among top national brands.