Location
Net Zero House
Situated just west of downtown Hood River, this 2,000 square-foot home is nestled into a gently north-sloping site with sweeping views across to the north banks of the Columbia River. The homeowners have stipulated that the house produce all of the energy that it uses on-site, a net-zero energy home relying on a 10kW photo-voltaic array located on the roof. Designed for a family of four and to serve as a rental house for much of the year, the floor plan prioritizes flexibility and indoor-outdoor casual living. A studio on the lower floor may be used as separate guest quarters or a home office. The open-plan main level includes living, dining, kitchen, a large folding glass wall opening out onto the southern patio and a northeast-facing deck. A master bedroom and kids room with sleeping loft are located on the upper level with access to a roof deck.

In order to achieve net-zero energy, the home's envelope is designed with double-stud wall framing and dense-pack cellulose insulation with a super-tight building wrap and triple-paned windows to reduce energy loads due to heat-loss. The high-efficiency mini-split mechanical system and heat-recovery ventilation system further reduce the energy loads necessary to heat the home. All exterior materials, unfinished ipe wood siding and sil-LEED cement panel rainscreen assemblies and fly-ash concrete have been selected for their low embodied energy and to avoid the need for refinishing and reduced long-term maintenance. All spaces are arranged to maximize solar orientation and natural ventilation to keep the home passively cool during the summer months. The photo-voltaic array, beyond generating energy for the home, will, like a parasol, reduce heat loads on the roof and keep the home cooler. The landscaping will be comprised of plants that do not require long-term irrigation. The house has been sited in such a way as to preserve two large trees on the site.

The home is planned to be completed by early 2012.

Hood River, OR
Project Pamphlet Sheet
The NET ZERO House (1.2mb PDF)
rendering: Miller Hull