Component Award announced for ventilation in residential buildings

Press Release, Passive House Institute, 11 August 2015 Innovators in the field of cost-effective systems for broad application to be honored [caption id="attachment_5342" align="aligncenter" width="779"] Ventilation With Heat Recovery (Image Credit: Passive House Institute)[/caption]   [caption id="attachment_5341" align="alignright" width="300"] Component Award 2016 (Image Credit: Passive House Institute)[/caption] Darmstadt, Germany. Ventilation with heat recovery is absolutely essential in energy efficient construction. The application of such systems in practice often fails due…


Passive House Institute also focuses on maximising energy efficiency for hot water / PHI Press Release

German manufacturer receives the first-ever certificates for drain water heat recovery (Press Release, Passive House Institute, 21 May 2015) "Darmstadt, Germany. For millions of people, a hot shower in the morning is an essential part of modern life – but it also consumes a lot of energy. In order to contribute to increased efficiency in this area, the Passive House Institute has introduced certification criteria for systems for heat recovery…


A Review of Ventilation in Proposed PHIUS Standard

Below are comments made to the PHIUS review committee by Barry Stephens of Zehnder America.  Reprinted here with permission. --------------------------------------------------------------------------------------------------------------------------------- In reviewing the Climate Specific Passive Building Standards, I encounter some glaring deficiencies. Although there is a lack of detail in the draft with regards to H/ERVs and ventilation, it can be determined that there is no actual standard being used to quantify energy efficiency and/or energy recovery that correlates…


Parsons graduate architecture students performing case studies of NYC buildings looking for partners

David White of Right Environments, a NYPH member and Parsons faculty, is looking for architects, developers, or building owners to partner with Parsons graduate architecture students performing case studies of NYC buildings.  They will be studying energy use, thermal comfort, air quality, and related building science subjects. The partner will meet with students to discuss the design approach and potential areas of study; provide drawings; and help coordinate permission for access to…


AAVs (Air Admittance Valves)

[caption id="attachment_2579" align="alignright" width="80"] AAV[/caption] [caption id="attachment_2581" align="alignright" width="80"] TYPICAL VENT STACK[/caption] Venting of plumbing fixtures has been a standard in the design and construction of plumbing systems in New York City buildings for almost a century. Vented plumbing stacks are required to maintain a water seal in a fixture's trap, the U-shaped section of pipe below a sink, which creates an air lock that prevents the entrance of sewer gasses. Without the trap's water…


Building Efficiency and Blower Doors: Essential Responses to Sandy

By Ken Levenson, A.I.A. Superstorm Sandy has produced a torrent of meetings, plans, reports, announcements and actions by city, state, federal and non-governmental organizations. Today, before their terms expire, the New York City Council and Mayor are racing to pass important legislation based on these past months of herculean effort. While the action may be understandably focused on measures directly related to storm survival of our built environment from wind…


PHI airtightness maximums compared to current USA airtightness code requirements

By Floris Keverling Buisman, reposted from  Four Seven Five It has been argued by many that the air-sealing requirements set by the Passivhaus Institute are too strict, unrealisticly low and thus too costly. However, the kind people on the other side of the Atlantic have shown that it is not hard to surpass these requirements by far, save both energy and prevent moisture and mold issues in walls. We are starting…


Blowerdoor protocol for verification of 0.6 ACH50 for Passive House

By Floris Keverling Buisman,  Four Seven Five Automated blowerdoor test according to EN13829 with DG700 manometer controlled by laptop Building air-tightness that is below 0.6 air changes per hour at 50 pascals pressure (0.6ACH50) is a simple target that the Passive House Institute (PHI) requires for new building certification.  (A retrofit may meet 1.0ACH50 for EnerPHit certification.)  This is a measurement of air flow and not much input or calculations are required…. Just…