For cold-weather climates, windows and doors with double- or triple-pane glass with argon provide excellent insulation and draft protection and will help lower your heating bills.
If you have hot, sunny weather — or windows on the side of your house in direct sun — Advanced Low-E or SunDefense™ Low-E insulating glass is a great choice for you. The two layers of thermal protection reflects the sun's heating and fading rays away from your house, keeping it cooler in the summer and helping to protect your furnishings.
If you live in a coastal area prone to hurricanes, Pella's HurricaneShield® impact-resistant glass will meet stringent building codes and provide added protection from wind, water and flying debris.
Locations with temperate weather need the basic energy efficiency of Low-E insulating glass (double-pane glass with airspace in between).