Health, quiet and resilience

Why living in a Passive House feels different

By STEPHEN STUART

Posted 3/18/26

Up until now, we’ve talked about physics, history and metrics. But buildings are for people. The true reason Passive House is gaining traction isn’t just because it’s “green”—it’s …

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Health, quiet and resilience

Why living in a Passive House feels different

Photo by Alexander Andrews on Unsplash

Posted Wednesday, March 18, 2026 11:35 am

Editor’s letter

“You see things; you say, ‘Why?’ But I dream things that never were, and I say, ‘Why not?’”—George Bernard Shaw, “Back to Methuselah”

In this edition of the River Reporter sustainability series we explore dreaming things that never were, and say “Why not?”

In this dreaming, we explore the “Why not?” of a built environment that needs little or no additional heating equipment; a building in which the passive activities of the occupants provide all of the thermal energy to be comfortable on even the coldest day of the year!

The Passive House standard was born of necessity to support a Norwegian research vessel, was reimagined in a Canadian research project during the 1970s oil embargo, and came of age with the diligent research of Dr. Wolfgang Feist. For more information, go to passivehouse.com/en/home/.

Today, Passive House is a worldwide standard that uses building science to guide architects, engineers and tradespeople as they reimagine our built environment. “Why not?”

In Sullivan County, NY, you will find Passive House homes, a cidery, a municipal highway garage and the use of Passive House principles in partial building renovations.

I am grateful for the contributions of the architects and writers who shared their stories and their work for this section.

Stephen Stuart, editor

Stephen Stuart, CPHC, is lead instructor for Yestermorrow Design/Build School’s Certificate in Building Science and Net Zero Design course.

ERV/HRV: Energy/heat recovery ventilator. A system that brings in fresh air while reclaiming heat from the exhaust air.

ACH50: Air changes per hour at 50 pascals. A measure of how “leaky” a house is. A Passive House requires 0.6 or less.

kBTU: 1,000 British thermal units—a unit of energy. Used to measure heating and cooling loads.

R-value: A measure of thermal resistance. The higher the R-value, the better the insulation.

Thermal bridge: A highly conductive material (like a stud or bolt) that allows heat to bypass insulation.

U-value: The rate of heat transfer through a window or door. The lower the u-value, the better.

By STEPHEN STUART

Up until now, we’ve talked about physics, history and metrics. But buildings are for people. The true reason Passive House is gaining traction isn’t just because it’s “green”—it’s because it is incredibly comfortable.

The health factor

Most people don’t realize that the air inside a typical home is often more polluted than the air outside. Dust, allergens and VOCs (volatile organic compounds) from furniture and cleaning supplies linger in stagnant air. Because every Passive House has a high-grade filtration system (the HRV/ERV), the air is constantly being exchanged and cleaned. People with asthma or allergies often report that their symptoms drastically improve when they move into a Passive House.

The ‘quiet’ luxury

Because of the thick insulation, air sealing details and triple-pane windows, Passive Houses are quiet. Whether you live near a highway, an airport or a busy city street, once you close that airtight door, the world disappears. This acoustic comfort is one of the most cited benefits by homeowners. Of course, if you are experiencing a gorgeous spring day, opening the window lets you enjoy the returning songbirds and the peepers!

Resilience: The ‘lifeboat’ effect

In an era of increasingly frequent power outages due to extreme weather, Passive House provides a unique kind of security. If the power goes out during a winter storm, a standard home will drop to freezing temperatures in a matter of hours. A Passive House, however, can maintain a safe interior temperature for days or even weeks without power, purely through its “passive” ability to hold onto heat. Because the energy requirement is so small, a smart battery energy storage system (BESS) can easily provide the energy to continue the operation of the ventilation system. It acts as a lifeboat for your family.

The future of building

Passive House is not just for the wealthy or the eco-conscious. Affordable housing developments and multi-family apartments are being built to this standard because it lowers the “total cost of ownership” for residents. It eliminates “fuel poverty,” a situation in which families have to choose between heating and eating.