Modern Net-Zero Energy Design
– Specs:
2- unit townhouse project completed
(1) 2 bedroom unit with garage, (1) 3 bedroom unit
Site net-zero energy: 5.4 kW photovoltaic system per unit provides 100% of anticipated energy use
Designed and built to Passive House standards
Heat pump heating/cooling and water heating
Motorized exterior shades on west facade to mitigate overheating
– Completed: July 2020
– Architect: Robert Hawthorne
– Contractor: PDX Living, LLC
Performance
- 5.4 kW PV system
- Passive House Performance:
- Specific heating demand: 4.74 kBTU/(ft^2yr)
- Airtightness as tested: 0.18 ACH50