Portola Valley Passive House

PROJECT

Project Name: Portola Valley Passive House
Completion Date:
2010
Building Type:
Remodel
Project Description:
This is a Passive House Remodel of a summer cottage originally built in the early 20th century. The owners kept the old-growth interior intact and remodeled the house to Passive House Standards in 2012. An unique feature of this house is the homemade hydronic heating loop adapted from beer brewing equipment. This is a Passive House Remodel of a summer coLage originally built in the early 20
th
century. The
owners kept the old-growth interior intact and remodeled the house to Passive House Standards in
2012. An unique feature of this house is the homemade hydronic heaBng loop adapted from beer
brewing equipment.
Note:
Plan carefully to visit this site as there are only 3 parking spaces onsite
and no street parking. Round trip bike ride from Palo Alto
Location:
94028 Portola Valley, CA
No. of units:
1
Construction Type:
Remodel
Construction Cost:
$200


TEAM

Owner:
Chris Field & Nona Chiariello
Architect/Designer:
Scott Shell, EHDD Architects
Engineer/s:
Chris Field & Nona Chiariello
PH Consultant:
Graham Irwin
Contractor:
Other:
Miscelaneous:


PREDICTED PERFORMANCE

METRIC VALUES

Treated Floor Area:
1763 ft2
164 m2
Typical Calc. Area:
1763 ft2
Exterior Walls:
0.04 hr.ft2.ºF/BTU
141.950 W/m2K
Floor/Slab:
0.03 hr.ft2.ºF/BTU
189.267 W/m2K
Roof:
0.02 hr.ft2.ºF/BTU
283.900 W/m2K
Overall Window:
0.21 hr.ft2.ºF/BTU
27.038 W/m2K
Window Frame:
0.25 hr.ft2.ºF/BTU
22.712 W/m2K
Window SHGC:
0.30
0.30 %
Entry Door:
0.00 hr.ft2.ºF/BTU
INF W/m2K
Ventilation:
83.00 %
83.00 %
Heating Source:
Condensing Boiler, 90% efficiency
Cooling Source:
Hot Water Source:
Condensing Boiler, 90% efficiency
Airtightness:
0.70 ACH50
0.70 ACH50
Green materials:
Annual Heat Demand:
5.94 kBTU/ft².yr
18.74 kWh/m2yr
Heating Load:
3.00 BTU/ft².hr
9.46 W/m2
Primary Energy Value:
31.00 kBTU/ft².yr
97.79 kWh/m2yr


CERTIFICATION

Certification:
Issued by: