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Building Science Bulletin – July 2026

High-performance building isn’t standing still—and neither is the conversation around it.

This month, we’ve seen Passive House principles show up in places you might not expect: protecting homes from wildfire smoke, reducing dependence on air conditioning during extreme heat, shaping entire communities, and improving affordable housing. Here are a few articles that caught our attention, and why we think they’re worth yours.

“Summit County’s First Certified Passive House Aims to Withstand Wildfires”

If wildfire smoke can keep us indoors for days, or even weeks, shouldn’t our buildings be designed for that reality?

This certified Passive House in Silverthorne, Colorado shows how thoughtful enclosure design and controlled ventilation can do far more than save energy. They can help create healthier indoor environments during increasingly common climate events.

At Emu, we’ve always believed that building performance isn’t just about efficiency, it’s about resilience. And that conversation is becoming more important every year.

Read Full Original Article: CBS Colorado

“Can Better Buildings Help Us Escape Air Conditioning?”

As temperatures continue to climb, our first instinct is often to ask, “How much bigger does the air conditioner need to be?” Building science asks a different question: “Why is the heat getting inside in the first place?”

Passive House flips the conversation by prioritizing a high-performance envelope, thoughtful shading, airtight construction, and balanced ventilation before mechanical systems. The result isn’t just lower energy use—it’s buildings that stay comfortable longer, even when outdoor temperatures soar.

The most efficient cooling strategy isn’t always a bigger HVAC system. Sometimes, it’s designing a building that simply needs less cooling to begin with

Read Full Original Article: Vox

“Building New York’s First Passive House Community”

Passive House has long proven itself one building at a time. Now it’s beginning to shape entire neighborhoods.
One of the first New York large-scale Passive House residential community marks an important milestone, showing that high-performance design can successfully scale beyond individual projects to create healthier, more comfortable, and more resilient communities.

As cities face growing housing demand alongside ambitious climate goals, developments like this suggest that building science isn’t just improving buildings—it’s helping redefine what future neighborhoods can look like.

Read Full Article: Metropolis Magazine

“NYC Housing Authority Closes on $214M Bronx Affordable Senior Development”

Some of the most exciting Passive House projects today aren’t luxury homes,they’re affordable communities.

The Bronx’s new Sol on Park development will provide affordable housing for seniors while meeting both Passive House and LEED Platinum standards. Beyond energy performance, the project incorporates health-focused design, supportive services, and community amenities that prioritize resident well-being alongside long-term building durability.

We love seeing projects like this because they demonstrate what building science is ultimately about: creating buildings that are healthier, more comfortable, and built to serve people for decades to come.

Read Full Article: Multi-Housing News

Upcoming Industry Events

Green Building United – FULL CALENDAR HERE

July 21 | 4:00–6:00 PM (ET) – LFCC Annual Delaware River Boat Tour: Natural Water Quality Solutions

Urban Green Council – FULL CALENDAR HERE

July 15 | 10:00–11:00 AM (ET) – Investigate the NYC Greenhouse Gas Inventory with MOCEJ

USGBC California – FULL CALENDAR HERE

July 21 | 6:00 PM (PT) – The Long Game: Sustainable Design Trivia

If there’s one thing these stories have in common, it’s this: building science keeps proving its value in the real world.

Whether it’s helping homes stay healthier during wildfire smoke, keeping buildings comfortable through extreme heat, or shaping the next generation of affordable housing, high-performance design is solving challenges that go far beyond energy efficiency. That’s exactly why we do what we do—and why we’re excited to see where our industry is headed.

Emu Full Calendar HERE.

Building Science Bulletin – June 2026

Between rising energy costs, increasing climate resilience requirements, and growing demand for healthier indoor environments, high-performance construction is moving from “nice to have” to “hard to ignore.”

This month, several industry developments reinforced what many building science professionals already know: better buildings aren’t a future trend, they’re becoming the new benchmark.

Here’s a look the news & events that caught our attention for this month.

Passive House Network Conference 2026 Highlights the Business Case for High-Performance Buildings

The Passive House Network Conference gathered industry leaders at the PHI-certified Hotel Marcel in Connecticut to discuss one central question:

How do we deliver better buildings at scale?

Sessions focused on resilience, affordability, occupant health, and the growing business case for high-performance construction. Far from theoretical discussions, presenters shared real-world lessons from multifamily, institutional, and commercial projects already demonstrating what’s possible.

Conference Event Page: Passive House Network

New York Launches Major Initiative to Tackle Embodied Carbon

The next frontier in high-performance buildings isn’t just operational energy, it’s the carbon embedded in the materials themselves.

Last month, New York City announced a new initiative to study and reduce embodied carbon across future construction projects. The effort, involving researchers from NYU and Rutgers University, aims to create a roadmap for lower-carbon buildings and could influence policy, procurement, and design decisions across one of North America’s largest construction markets. As operational energy decreases through better building performance, embodied carbon is becoming an increasingly important part of the industry’s climate conversation.

Wall Street Journal Article: New York Is Working on a Blueprint for Greener Buildings

Passive House Projects Head to the 2026 World Cup

As the world prepares for the 2026 FIFA World Cup, the International Passive House Association (iPHA) is highlighting Passive House projects from the tournament’s three host countries, Canada, Mexico, and the United States. The initiative showcases certified and high-performance buildings that demonstrate how Passive House principles can be applied across a variety of climates, building types, and scales.

The campaign draws attention to the growing international footprint of Passive House and the increasing recognition of energy-efficient, resilient buildings as part of broader sustainability and climate goals. From residential developments to institutional and commercial buildings, the featured projects illustrate how high-performance design is becoming a global movement rather than a regional niche.

Event Details: Passive House Canada

Pennsylvania’s First EnerPHit-Certified Home Shows What’s Possible for Existing Buildings

With roughly 80% of today’s buildings expected to still be standing in 2050, many building science leaders are shifting their attention from new construction toward deep energy retrofits.

A recent example is the Wilkinsburg Residence in Pennsylvania, which became the state’s first EnerPHit-certified home, a rigorous Passive House standard specifically developed for existing building retrofits. Rather than demolishing and rebuilding, the project transformed an aging structure into a highly efficient, comfortable, and resilient home while meeting some of the most demanding performance targets in the industry.

Projects like this are helping demonstrate that high-performance building principles aren’t reserved for new construction. They can also be applied to the buildings we already have, creating healthier, more durable, and lower-carbon spaces for decades to come.

Read more: Axios Pittsburgh

Upcoming Industry Events:

Passive House Accelerator – FULL CALENDAR HERE

June 17th – BEYOND COMPLIANCE: How High Performance Fenestration Supports Passive House and Large-Building Decarbonization

Passive House California – FULL CALENDAR HERE

June 16th – PHCA Community Meeting | Passive House x Fire Hardened

New York Passive House – FULL CALENDAR HERE

June 11th – NYPH + PHN Empire State Roundtable: Advancing Passive House Policy

Whether it’s a Passive House hotel, a deep energy retrofit, or a new carbon-reduction initiative, each of these stories points to the same conclusion: better buildings are possible today—and they’re quickly becoming the new standard.

Emu Full Calendar HERE.

What if buildings could make us healthier?

What if buildings could make us healthier? We track steps, calories, heart rates—so why not architecture?

When we talk about improving buildings, the conversation is usually cosmetic or mechanical: add a plant here, throw in some double glazing, maybe upgrade the AC. But what if we flipped the question entirely? What if we asked what buildings can do to improve us—our health, our comfort, our daily quality of life?

The uncomfortable truth is that many of today’s buildings actively work against us. Poor ventilation allows pollutants and CO₂ to accumulate indoors, moisture problems lead to hidden mold growth, and inconsistent temperatures and drafts create chronic discomfort and stress. These aren’t rare failures—they’re common side effects of buildings designed for speed, cost, and minimum code compliance rather than human health.

This is where Passive House health benefits quietly changes the conversation. Sure, it’s an ultra energy-efficient building standard—but it comes with a powerful side effect: healthier indoor environments. Not in a vague, wellness-trend way, but through measurable building-science fundamentals. Think consistently fresh, filtered air. No cold drafts sneaking in through gaps. No hidden condensation feeding mold behind walls. Stable, comfortable temperatures year-round.

Hollis Montessori School: Zero Energy Design, Hollis NH

Controlled Air: The Real Solution (Not Just Airtightness)

Air pollution is already one of the largest health risks we live with in the United States. A recent peer-reviewed study published in Environmental Science & Technology Letters estimates that outdoor air pollution contributes to roughly 100,000–200,000 premature deaths every year nationwide—not from rare events or extreme exposure, but from the air we breathe daily. Most of that pollution doesn’t stay outside. It migrates indoors, where we spend nearly 90% of our time.

Poor indoor air quality doesn’t take decades to show up. Its effects are immediate. Elevated indoor CO₂ levels have been linked to disrupted sleep, reduced cognitive performance, and difficulty concentrating. Poorly managed moisture and condensation create ideal conditions for mold growth—often hidden inside walls—triggering respiratory symptoms, asthma flare-ups, and allergic responses. When buildings fail to control air and moisture, the health consequences are not abstract or distant. They’re felt every day, long before any damage becomes visible.

Yet when indoor air problems are discussed, the blame is often misplaced. We frequently hear claims that “airtight buildings are unhealthy.” In reality, most conventional buildings fail at both ends of the spectrum. They are either leaky and uncontrolled, pulling in unfiltered outdoor air while losing heat—or sealed without proper ventilation, slowly accumulating stale air and pollutants. In both cases, comfort and health suffer.

The real issue isn’t airtightness. It’s lack of control.

Mold Issue. ©Damiano Chiarini.

What Passive House Does Differently

Passive House doesn’t try to choose between “sealed” or “leaky.” The goal isn’t more air or less air—it’s controlled air.

It starts with airtight construction and mechanical ventilation working together as a system. Airtight doesn’t mean airless—it means intentional. The airtight envelope eliminates random drafts, dust infiltration, outside smells, and those unexpected cold spots that wake you up at 3 a.m. But airtightness alone would be a problem without its counterpart.

That counterpart is mechanical ventilation with heat recovery—the system that makes airtight buildings healthy. Instead of relying on accidental air leaks or cracked windows, Passive House delivers a constant, balanced supply of fresh, filtered air. CO₂ levels stay low. Pollutants are reduced. Heat and moisture are recovered rather than wasted. The result is predictable, quiet, high-quality air—day and night, bedroom included.

Why not just open a window? Because outdoor air isn’t necessarily cleaner—and it’s rarely controlled. Traffic pollution, pollen, wildfire smoke, humidity spikes, and temperature swings all come along for the ride. Passive House separates fresh air from energy loss, ensuring ventilation without sacrificing comfort.

Next comes high-performance glazing. Triple-glazed windows with insulated frames hold heat in during winter and keep it out in summer, dramatically reducing temperature swings near windows. They also block noise—traffic, wind, late-night conversations—creating calmer interiors that support deeper, uninterrupted sleep. When cold glass no longer radiates chill into the room, the body can truly relax.

Finally, thermal comfort ties it all together. Passive House buildings maintain remarkably stable indoor temperatures—no overheating, no chilly corners. That stability matters more than most people realize, especially for sleep, which is highly sensitive to even small temperature fluctuations.

We invest in better mattresses, blackout curtains, and white-noise machines. We track sleep cycles and optimize bedtime routines. But what if the most powerful upgrade wasn’t another product—but the building itself?

Because sleeping in a sealed bedroom without proper ventilation leads to stale air and elevated CO₂ levels—conditions linked in multiple studies to poorer sleep quality and reduced cognitive performance the next day.

Passive House building health, Australia. Wildfire near Melbourne. PM2.5 monitoring. EnerPHit vs Regular Home.

Thermal Comfort and Cognitive Performance

Passive House doesn’t just save energy. It creates buildings that quietly support how we breathe, rest, and recover—night after night.

These days we keep hearing about “healthy building solutions,” but they’ve become a marketing cliché. Slap in a salt lamp, throw a succulent on the shelf, maybe add a $400 air purifier, and suddenly your apartment is a temple of wellness. But most of these trends treat symptoms, not the root cause.

Passive House health benefits flip that. No mysticism, no branded candles. Just performance. Fresh, filtered air, 24/7. It’s not wellness design in the lifestyle-mag sense; it’s wellness design in the “your kid’s asthma doesn’t flare up” sense.

We obsess over ergonomic chairs and sleep trackers, but few realize how much the building itself sets the baseline. No amount of essential oils can compensate for stale air and black mold.

If Passive House had a slogan, it might be:

“Not sexy. Just effective.”

And maybe that’s the problem—it doesn’t necessarily look like wellness. It just works like it.

Residential Passive House building health. More Comfort = Sleep Better

Why Passive House Isn’t Everywhere Yet

But the million-dollar question here is: If Passive House health benefits are so great—so energy-efficient, so health-positive, so… obvious—why aren’t it everywhere?

Short answer: inertia. Long answer: a tangled mix of outdated building codes, market conservatism, and the endless drive to cut first costs. Most construction still prioritizes square footage over performance. And developers tend to avoid anything that sounds “different,” even if it’s better.

There’s also confusion. Some assume Passive House is prohibitively expensive. (It’s not, especially over time.) Others think it’s just another green building label. (It isn’t—it’s a performance standard, not a checklist.)

Meanwhile, less rigorous certifications continue to dominate. LEED, WELL, and other frameworks are more flexible—and more brandable. They can be a good starting point, but often fail to guarantee results. Passive House demands proof—predictable and accountable outcomes.

The truth? We already know how to build healthier buildings. We just don’t require it. That’s a policy failure, not a technological one.

If we built every new home to Passive House standard today, we’d cut emissions and ER visits at the same time.

Performance gap estimates versus reality, passive house compared to other standards.

 

Passive House as a Health Intervention

Imagine if buildings were treated like wearables—part of our health stack.

You track sleep on your watch. You log steps, hydration, heart rate. But what about CO₂ levels in your bedroom? Or the humidity that encourages mold in the closet? Most of us have no idea what we’re breathing at home and work, or how it affects our recovery, focus, and mood.

With Passive House as a baseline—airtight, ventilated, stable—we could layer on smart systems that actually optimize indoor health in real time. Sensors that tweak airflow when pollutants rise. HVAC that adapts to your circadian rhythm. Imagine a home that helps you sleep better, think sharper, and get sick less often—automatically.

Far-fetched? Not really. The building industry is just behind the curve.

Maybe one day, your doctor won’t just prescribe medication.

Maybe they’ll prescribe a better envelope.

In the meantime, we already have the blueprint. It’s called Passive House. And it might just be the most overlooked health intervention of the decade.

If buildings can improve our health, then learning how to build them isn’t optional—it’s essential. Check out Emu’s upcoming Boot Camps HERE.

The top image is of 475’s new headquarters in Brooklyn. Photo courtesy of Nicholas Venezia.