what is Passive House, what is passivhaus, whats passive house, passive house standard, how passive house works,

+ Passive House is a worldwide energy efficiency standard that has been widely adopted in Europe and is now making inroads throughout the world. The positive European experience has helped develop case studies for just about every application and has proven the concept thousands of time over.

In the United States energy efficiency has traditionally been based on providing higher performing equipment in moderately improved building shells.  The Passive House standard puts emphasis on a high performing building shell with minimal HVAC equipment inside, using the internal heat loads from the appliances and occupants to maintain comfort. The core equipment is a Heat or Energy Recovery Ventilator or which provides fresh filtered air and distributes that air throughout the living space. The result is the highest performing building standard in the world. Passive House is well recognized as the cutting edge green building standard that is also simple to understand as occupants have no heating or cooling bills nor elaborate or expensive equipment to maintain. Think of it as a BTU recycling program.


Passive House is now being recognized within the US as a new potentially game changing model for green design and early adopters will be recognized as leaders in the green building movement. While the price for complying with the standard may be higher for most projects the larger the scale the more a dramatic reduction of cost per square foot occurs. This happens for two reasons, the economy of scale and the nature of energy efficiency in larger shells per square foot due to a decreased volume to area ratio. Passive House’s upfront expense is also reduced by the elimination or substantial reduction of HVAC equipment both heating and cooling.

+ Because the thermal envelope and windows are so well insulated a Passive House building is the most comfortable type of construction. Surfaces are radiantly neutral so even when is is extremely cold or warm outside occupants may not even know.

+ Passive House is also the healthiest building standard available. With virtually zero uncontrolled air infiltration a building has complete controllability of air quality with the HRV system and HEPA filters. Residents with chemical sensitivity, allergies, asthma or other medical issues have the best option of environmental control in a Passive House building with proper consideration of building materials and furnishings. Young children are particularly vulnerable to chemical stresses and will benefit the most from Passive House building. Indoor air environmental awareness could be a significant factor in a consumers preference for living in Passive House certified homes.

+ Passive House is craftsmanship in building for the 21st century. From complete energy modeling to meticulous details in construction to real-time bench mark performance testing RMPH introduces the best building system currently available for your project.

+Durability of the building system comes from the elimination of moisture laden air from rotting walls and growing mold and fungus. Exacting detailing around envelope penetrations protects sills, siding and other exterior elements from long term damage.

+ Because of the capacity of a Passive House to maintain temperature even during extreme weather, power outages, and other events do not adversely affect the livability. Resilience may not be the first reason to design a Passive House but it is reassuring to know that the home will be very comfortable even without the power on.

This is just the beginning of what makes a great home. A highly functional floor plan, safe non-toxic materials, excellent attention to detail and beautiful site appropriate design comes together in creating the highest quality living environment. We strive to assess all sustainable options of a design to minimize the environmental impact while achieving a great end result.

Like all green building, implementation of the design standard is critical at the beginning of the design phase for optimal performance and value.

+ For information please feel free to contact us.