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No. 1068 Project TrekHaus Status Certified
Lead CPHC Robert Hawthorne
Builder PDX Living, LLC Location Portland, OR
QA/QC Rater N/A Architecture Planning Robert Hawthorne, Architect Mechanical Systems Designer Matt Groves, Zehnder
Constr. Type Timber Bldg. Function Multifamily Floor Area 2370
Project Type New Construction HERS Index LEED Rating
Energy Star Rating Heating Degree Days 5418 Cooling Degree Days 400
Units 2 Certification Type PHIUS+    
Exterior Wall 2x8 stud framing with blown-in cellulose insulation, 4" polyiso over exterior sheathing
Floor Slab on grade over 4" EPS and 6.75" perlite
Roof 11-7/8" TJIs with blown-in cellulose and 7" polyiso over roof sheathing
Window Frame Thermotech Fiberglass with overinsulation
Window Glazing Thermotech Fiberglass 322 Gain (South facade) and 322 Shade (East, North, West facades)
Entrance Door ThermaTru Fiberglass with multi-point locking system
Ventilation Zehnder ComfoAir 350 HRV
Heating System Mitsubishi concealed minisplit heat pump
Submitter Robert Hawthorne
Air-tightness .34 ACH50
Cooling System Passive cooling and minisplit heat pump
Construction Year
Additional Consultants
Additional Notes Part of a research study by Portland State University's Green Building Research Lab to test the impact of occupant behavior on the performance of a Passive House as well as the performance of Bio PCM (Phase Change Material)

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