certified Passive House

Hollis Montessori Goes Net Positive

First Certified Passive House Elementary School in the U.S.

The Hollis Montessori School celebrated their tenth anniversary with a transition to renewable energy. As the first Certified Passive House elementary school in the U.S., the building already has an exceptionally efficient enclosure paired with high performance systems (for heating, cooling, hot water, lighting, and ventilation). The new installation of a 56.8 kW photovoltaic system completes the vision developed by the board of directors. The system is expected to offset all the energy demand of the high-performance building, with extra energy available for use for the other buildings on the school campus. The building is now net positive energy, and contributing to the goal of net zero energy for the entire campus.

ZED provided Passive House Consulting and Mechanical Design for the project.


Chicago Passive House Listed in the Passive House Database

The Ellis Passive House, which was the first PHI certified passive house in Chicago, is now officially listed in the international Passive House database.

The Passive House database is a joint project of the Passive House Institute, the Passivhaus Dienstleistung GmbH, the IG Passivhaus Deutschland and the iPHA (International Passive House Association) and contains a detailed overview of realized Passive Houses from around the world.

In this case, the antiquated 1890s greystone was renovated by Kenwood Construction Services with ZeroEnergy Design providing Passive House Consulting and Mechanical Design. The Passive House EnerPHit certified project is an excellent example of the renovation possibilities for an aging, residential masonry building. It proves that families who wish to live in a sustainable city home need not be limited by the age of the building nor do they have to compromise on style, space or comfort.

The Ellis Passive House was also recently featured on the Treehugger website for its impressive performance throughout the past winter.


GREEN HOME TOUR - first certified Passive House in Chicago!

ZeroEnergy Design and Kenwood Construction are pleased to announce that the historic greystone Ellis Passivhaus rowhome, which recently underwent a renovation to become the first certified Passive House in Chicago, is open to the public on the 2018 GreenBuilt Home Tour.

The GreenBuilt Home Tour features 15 exceptional, award-winning, and nationally-recognized homes throughout Illinois, which highlight attractive, affordable, and sustainable building practices. Tickets allow access for two people to all the homes.

The Ellis Passivhaus rowhome includes construction by Kenwood Construction, Passive House Consulting and Mechanical Design by ZeroEnergy Design, Architecture by Richard Kasemsarn, and Photos by Elizabeth Harper. The home has recently been certified under the Passive House EnerPHit standard by the Passive House Institute. 

DATES:  Sat July 28 + Sun July 29, 2018