Building Envelope

3fficient is pioneering new innovations that are practically making HVAC obsolete. We have dozens of envelope improvements, and are thrilled to share some of our latest innovations here:

Liquid Window Insulation

Windows and skylights are like giant energy holes with very little resistance to solar heat gain (or loss). Our new liquid window insulation is based on nano-technology that is 300% more efficient than traditional tints while allowing all the natural (visible) light in. After all who wants a window that you can’t see through?

Doesn’t bubble or crack, lasts indefinitely. Learn more >

Roof Shield

Roofs take a big beating from the elements and quickly lose their solar reflectivity (heat blocking skills). Our newest nanotechnology is more pliable and durable, more resistant to UV, heat and mold than traditional coatings. Even though it lasts longer than others, it can be re-applied indefinitely (e.g. every 10 years) making your roof last indefinitely.

Lightweight, flexible, resists mold. Learn more >

PCM Insulation

Without thermal mass, buildings will overheat in the summer and cool too fast in the winter, forcing HVAC to take up the slack. Phase change materials (PCM) can BALANCE the loads evenly, thereby reducing peak energy charges and greatly improving comfort.

Passive demand management/load shifting