Passive House Institute US (PHIUS)
Developed in cooperation with Building Science Corporation under a US Department of Energy (DOE) grant, the PHIUS+2015 standard targets the sweet spot between investment and payback to present an affordable solution to achieving the most comfortable and cost-effective building possible and the best path for achieving zero energy and carbon. Buildings designed and built to this standard perform 60-85% better (depending on climate zone and building type) on an energy consumption basis when compared to a code compliant building (International Energy Conservation Code IECC 2009).
More About The Certification
Please refer to certification process checklist for a description of the certification process.
Working with the project team to provide iterative feedback on the design, PHIUS+ 2015 Pre-Certification can be achieved in about 3-6 months. Once construction has been completed and PHIUS has received all completed documentation, including the PHIUS Rater’s QA/QC documentation, full certification can be achieved in about 1 month.
The costs for certification are based upon the square footage. Please refer to the information below, found here
2,501 - 4,500 sq. ft. iCFA - $1,480
2,501 - 4,500 sq. ft. - $1,757.50
2,500 - 4,500 sq. ft. - $1,850.00
In contrast to the Passivhaus Standard developed by the German Passivhaus Institute, which takes a one-size-fits-all approach to energy metrics, the climate-optimized PHIUS+ 2015 Passive Building Standard is the first and only passive building standard in the world based upon climate-specific comfort and performance criteria aimed at presenting an affordable solution to achieving the most durable, resilient, and energy-efficient building possible for a specific location.
For a building to achieve certification under the climate-specific PHIUS+ 2015 Passive Building Standard, it must be designed and constructed so that it meets our strict energy performance metrics and airtightness requirements.
All PHIUS+ 2015 projects also achieve:
1) Third-party RESNET-approved quality assurance/quality control;
2) U.S. DOE Zero Energy Ready Home status;
3) HERS rating. While our certification program specifically addresses energy efficiency and performance, it is complementary to other green building certification programs that address materials, water, and other factors beyond the energy performance of the project. For more information
There are a total of 183 PHIUS+ certified projects. PHIUS+ Certified and Pre-Certified projects now total 1.1 million square feet across 1,200 units.
We are based in the US, but have certified projects throughout North America (US and Canada) as well as in Japan, Korea, and Israel. With the climate-specific PHIUS+ 2015 standard, the standard is relevant to all climate zones.
The majority of projects we see are new construction, however renovations to existing buildings are eligible for and have been certified under our program in the past.
Buildings designed and built to this standard consume 86% less energy for heating and 46% less energy for cooling (depending on climate zone and building type) when compared to a code-compliant building (International Energy Conservation Code IECC 2009), resulting in an overall site Energy Use Intensity (EUI) of approximately 10-20 kBTU/ft2 year. Thus, these buildings can achieve net-zero energy performance levels with the addition of a modest sized renewable energy system.