We are experiencing increased interest and awareness of the possible integration of Passive House strategies in the affordable multifamily industry to increase energy efficiency, healthy indoor air quality, and resilience. Affordable multifamily developers have consistently been early adopters of environmentally responsible practices in the design and construction of their projects. Most recently, in their quest to reduce greenhouse gasses (GHGs) and provide the best possible living conditions for occupants, they…
EpiPHany Corner | Achieving Your Vision for a High-Performance Home
The following is true for the design and construction of any home or building, but particularly important when your vision includes high-performance: The elements of high-performance include energy efficiency, indoor air quality, comfort, durability, and — resilience to extreme heat/cold, wildfires/smoke, and power outages. Historically, the process of building a custom home on a particular parcel has been a bit like a relay race. The potential homeowner would have an…
EpiPHany Corner | The Natural Order of Sustainability
When you are in the process of designing and constructing a new building, or planning for the remodeling or retrofitting an existing building, the Natural Order of Sustainability is: Passive First - Active Second - and Renewables Last. A “passive” solution delivers desired performance naturally, as a function of design, and continues to deliver that performance over time with little or no intervention other than basic maintenance. When you design…
EpiPHany Corner | A High-Performance Enclosure: The #1 Priority for Resiliency
Resiliency is the “ability to withstand and recover from difficult life events.” In the case of buildings, difficult life events include extreme heat or cold, wildfires, airborne pollutants (including smoke), and power outages. The #1 priority for achieving resiliency is a high-performance enclosure (envelope) The #1 priority for attaining a high-performance enclosure is air sealing Employing Passive House protocols is the #1 way of delivering an airtight enclosure The high-performing…
EpiPHany Corner | The Logic of The MacLeamy Curve
In 2004, Patrick MacLeamy (CEO of HOK Architects) introduced the “Effort Curve”, now known as the MacLeamy Curve, to leverage technology and collaboration early in the design process for new buildings. Today, application of MacLeamy’s logic is critically important in achieving Passive House performance. A simple analogy: Imagine you were arranging a family vacation that included visits to several countries — and you wanted to arrive back home on time…
EpiPHany Corner | Position High-Performance as the Baseline
You cannot discern how a building will perform by appearance alone. The home pictured below must be at least code compliant in order to pass inspection, but it might be a high-performing building in terms of energy efficiency, comfort, indoor air quality, durability, and environmental responsibility. It may even qualify as a Passive House. You need additional evidence from modeling and testing to make a determination. The key word here…
EpiPHany Corner | Do Pass/Fail choices deliver optimum performance?
Even though it seems intuitively obvious that the logical answer is NO, a surprisingly high percentage of decisions regarding the design and construction of new homes are made on a Pass/Fail basis. “Building to code”, means complying with at least the minimum acceptable requirements in the large number of specific areas where compliance is required. Code is a Pass/Fail system and if a building does not meet one or more…
EpiPHany Corner | The Audubon Society Supports Wind Energy
This month’s EpiPHany Corner, while not directly related to Passive House, does provide some relevant insights associated with the production of renewable energy — specifically, the misinformation regarding the significance of bird deaths from wind turbines. The fact that the misinformation is largely funded by the fossil fuel industry is not an epiphany. Indeed, a significant number of birds are lost to collisions with turbine blades, but research into causes…
EpiPHany Corner | Can You Quantify the Value of High Performance?
When you shop for a pair of running shoes, you will consider the purchase price and relevant performance related features (waterproofing, arch support, tread pattern, durability, etc.) but your purchase decision, among similar alternatives, will be based on how they fit your feet (comfort) and how well they “fit with” your intended use. Even if you wind up spending a few dollars more, you are choosing the best value based…