BAYVILLE - It's the next generation of eco-friendly homes! A Long Island home is using high efficiency techniques to stay warm in the winter and cool in the summer.

News 12 Long Island’s Danielle Campbell toured the so-called “Passive House” in Bayville.

Homeowner Nancy Sirianni says she decided to renovate her home, but wanted it to be eco-friendly.  Sirianni discovered a building technique called "Passive House."

David Taormina who owns North Shore construction studied the Passive House technique that originated in Germany. The concept is to insulate your home like a thermos.

Taormina says a Passive House is air-tight layers, tons of insulation and super efficient windows combined with a fresh air recovery system.