Schedule a Free Consultation

Your High-Performance™ Low-E4® Glass Options

Where heating and cooling requirements are both concerns, Renewal by Andersen®‘s  High-Performance Low-E4® glass is a great choice, promoting energy efficiency particularly in winter and summer. What’s even better is that the window installation glass is available in other options, ensuring you get what will address your needs best.

These ENERGY STAR®-certified options include:

High-Performance Low-E4 SmartSun™ 

The most energy-efficient window glass option ever offered by Renewal by Andersen, it is nearly 50% more energy-efficient in winter and up to 70% more energy-efficient in summer compared to standard dual-pane glass. It also blocks 95% off harsh ultraviolet rays, preventing interior fading without impeding natural light, as well as cuts down on noise pollution to give you peace and quiet.

High-Performance Low-E4 SmartSun Glass With HeatLock® Technology™ 

Designed to keep indoor heat in, High-Performance Low-E4 SmartSun Glass With HeatLock Technology boasts of a performance comparable to triple-pane glass while maintaining dual-pane construction. This window installation design meets the most stringent energy codes and requirements in place today.

High-Performance Low-E4 Sun Glass

Best for homes in hot and dry climates with next to zero shade, it works by helping keep cooling costs at bay. The High-Performance Low-E4 Sun glass is able to do this by filtering out heat from the sun, thanks to a subtle tint coating that cuts back on visible light. Against solar heat gain or passive heating, it is rated the highest, making it great for keeping homes cooler.

Ready to enjoy what High-Performance Low-E4 glass has to offer?

Renewal by Andersen of San Francisco is the expert to trust for quality window installation products and services. To learn more about what we can do for you, simply give us a call at (510) 263-3210 or fill out our contact form. Schedule a FREE consultation with us today! We serve San Francisco, CA, and the surrounding communities. 


"I wished to have this done long time ago, had I known the benefits of these products provided by Renewal by Andersen"

June 26

View All Reviews