PROJECT.

Fairwood Commons

Ohio’s first multifamily Passive House


Can affordable senior housing be built to the Passive House standard?

Problem


When Woda Cooper Companies, Inc. envisioned a LEED Platinum and Passive House certified affordable senior living development, the benefits were clear: reduced utility bills furthered the project’s affordability goals, and improved indoor air quality, thermal comfort, and acoustics were of elevated importance for the project’s elderly residents.

The central challenge was how to achieve the certifications—and the strict performance requirements that came with them—without breaking the project budget.

The project also came with unique building diagnostic challenges during construction, such as an out-of-balance energy recovery ventilation (ERV) system that was running up the energy meter. Tracking down these issues was critical for the project to attain its designed performance.

Solution


Close collaboration.

Close collaboration with the architects, engineers, and builders was key to developing effective design strategies, construction details, and HVAC designs that achieved project goals within the project budget. Early, iterative energy modeling helped set and keep the project on track.

Off-the-shelf materials.

The thermal and air-tightness details developed with the design team utilized off-the-shelf components and hewed as closely as possible to conventional construction. For example, we were able to utilize conventional windows rather than more costly European windows and still meet all Passive House certification targets.

Involvement during construction.

As the project moved into construction, we delivered training for construction trades and provided frequent on-site inspections and building diagnostic testing to verify performance and resolve issues—ultimately ensuring that the project met its performance and certification targets.

The Impact


PHIUS+ 2015 and LEED Homes Platinum Certified


53%
Reduction in Energy Use From IECC 2009 Baseline

82%
Reduction in Envelope Air Leakage From IECC 2009 Baseline

29%
Reduction in Water Use

100%
Of Stormwater Managed On-Site