Midori Haus

PROJECT
Project Name: Midori Haus
Completion Date:
2013
Building Type:
Single-Family
Project Description:

This 94-year old house is the first certified Passive House in Santa Cruz County. Water conservation features include rainwater harvesting for indoor non-potable use (laundry and toilets). Charming and comfortable Passive House, as a bonus the before and after utility bills show 80% reduction in energy use after the retrofit. 
Location:
135 Van Ness Avenue,
CA 95060 Santa Cruz
No. of units:
1
Construction Type:
Stick Frame
Construction Cost:


TEAM
Owner:
Kurt Hurley & Chie Kawahara
Architect/Designer:
Graham Irwin, Essential Habitat
Engineer/s:
PH Consultant:
Graham Irwin, Essential Habitat
Contractor:
Santa Cruz Green Builders
Other:
Miscelaneous:


PREDICTED PERFORMANCE

METRIC VALUES
Treated Floor Area:
1413 ft2
131 m2
Typical Calc. Area:
1601 ft2
Exterior Walls:
23.00 hr.ft2.ºF/BTU
0.247 W/m2K
Floor/Slab:
27.00 hr.ft2.ºF/BTU
0.210 W/m2K
Roof:
82.00 hr.ft2.ºF/BTU
0.069 W/m2K
Overall Window:
4.00 hr.ft2.ºF/BTU
1.420 W/m2K
Window Frame:
5.00 hr.ft2.ºF/BTU
1.136 W/m2K
Window SHGC:
0.42
0.42 %
Entry Door:
6.00 hr.ft2.ºF/BTU
0.94633333333333 W/m2K
Ventilation:
82.10 %
82.10 %
Heating Source:
Solar w/ Gas Condensing Boiler
Cooling Source:
Hot Water Source:
Solar w/ Gas Condensing Boiler
Airtightness:
0.59 ACH50
0.59 ACH50
Green materials:
Annual Heat Demand:
3.89 kBTU/ft².yr
12.27 kWh/m2yr
Heating Load:
2.01 BTU/ft².hr
6.34 W/m2
Primary Energy Value:
22.45 kBTU/ft².yr
70.82 kWh/m2yr


CERTIFICATION
Certification:
Issued by:
PHI