Passive House (PHIUS): A Smarter Way to Build
Not all homes are built the same. At WS Design & Build, we believe in building homes that are healthier, more comfortable, and dramatically more energy efficient. That belief is what led us to start building Passive Houses following PHIUS guidelines.
Passive House construction is not about trends or buzzwords. It is about creating a home that works with the environment, not against it, while delivering consistent comfort and long-term savings.
What Is a Passive House?
A Passive House is a high-performance home built to standards set by PHIUS, the Passive House Institute of the United States. These guidelines focus on minimizing energy use while maximizing comfort, indoor air quality, and durability.
Compared to a conventional home, a Passive House uses only a fraction of the energy for heating, cooling, and electricity. The result is a home with extremely low utility costs and a consistently comfortable interior, no matter the season.
Airtight Construction That Makes the Difference
One of the defining features of a Passive House is airtight construction. In this home, the entire structure is wrapped using an airtight membrane system, creating a continuous seal around the building envelope.
We pair that system with high-performance, European-style tilt-turn windows that are fully sealed when closed. Combined with very thick insulation, this approach dramatically reduces heat loss and air leakage.
This home features:
- R-72 insulation in the ceilings
- R-58 insulation in the walls
With this level of insulation and airtightness, the home can be heated with very little energy, even during the coldest months.
Is an Airtight Home Healthy?
This is the number one question we hear, and the answer is yes.
Passive Homes use an Energy Recovery Ventilation (ERV) system that runs continuously. This system brings fresh outdoor air into the home while exhausting stale indoor air, all day and night. At the same time, it recovers energy from the outgoing air, keeping the home efficient.
The result is clean, fresh air without drafts, dust, or the constant recycling of stale air that is common in traditional HVAC systems. Especially in winter, when people tend to get sick more often, a Passive Home supports healthier living and better sleep.
Comfort, Quiet, and Safety Built In
Living in a Passive House means consistent indoor temperatures year-round. No cold spots, no overheating, and no drastic swings from room to room.
These homes are also exceptionally quiet. The combination of airtight construction and double layers of mineral wool insulation significantly reduces outside noise.
Beyond comfort, Passive Homes offer added safety benefits. Materials such as mineral wool insulation, metal roofing, and fiber cement siding are fire resistant, adding another layer of protection to the home.
Building for the Future
We decided to start building Passive Homes because this is where residential construction is headed. High-performance homes are better for homeowners, better for the environment, and better for the long term.
This is not about doing more. It is about building smarter.
Watch the Video: Passive House in Action
See how PHIUS standards, airtight construction, and high-performance systems come together in this Passive House build. Watch the video below to learn more about the key components and benefits of living in a home designed for comfort, health, and efficiency.
Video Transcript
This home's different than a regular build. This is a passive home. We followed the PHIUS guidelines. Those are the passive institute of the United States. To use only a fraction of the costs of your energy bills, your heating, electrical, your air conditioning. It's minimized to almost nothing and it's designed to keep you very comfortable and very healthy all year round.
In this passive home, this is airtight construction which we use a a brand called Intello which the entire house is wrapped. We use airtight windows. They're European style tilt turns which are completely sealed and we use very thick insulation. We have R72 in the ceilings and we have R58 in the walls. You could heat this house with very little energy cost.
The number one question we get is a home that's sealed so tight, is that healthy? Is that safe? Yes. We use a system called ERV, which is an energy recovery ventilation system, which brings fresh air in, stale air out 24/7, and it's constantly cycling.
What's it like to live in a passive house? It's consistent and it's healthy. Winter comes, everyone's getting sick, you're sleeping in clean air. You're not that recycled heating or air that you have in your house, dust blowing in your face. The sound resistant. It's we built it with double layers of rock wool or mineral wool, which is that's fire resistant. The metal roof's fire resistant. The hardy plank siding is fire resistant. So, there's a lot of benefits to this home. We decided to start building passive homes because this is the future. We want to work with the environment, not against the environment.
This is just a smarter way to build.



