House in a Hollow
Project Address
Bellingham, WA
Conditioned Square Footage
1,935 sqft
Number of Bedrooms
3 Beds
Number of Bathrooms
2.5 Baths
Number of Floors Above Grade
2 Floors Above Grade
Home Type
Custom
Climate Zone Temperature
Mixed
Climate Zone Humidity
Marine
With PV
HERS Index with PV
-23HERS (PV)
Average Monthly Energy Bill PV
$-20Average Monthly Energy Bill (PV)
Annual Energy Cost Savings with PV
$2,150Annual Energy Cost Savings (PV)
30 Year Savings with PV
$86,60030 Year Savings (PV)
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Key Features
Key Features
Air-to-water heat pump All-electric home Energy / Heat recovery ventilator Heat pump water heater Insulated concrete form (ICF) walls and/or foundation Photovoltaics Triple-pane windows ACH 50 < 2.5 or CFM50/SF of enclosure ≤ 0.25 Central Manifold Plumbing Design
Read the Case Study
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Testimonials
Video Testimonial
Home owner (or occupant) TestimonyA net-zero house is appealing because of the money factor, and environmentally it’s a good thing, too. An energy-efficient house makes a lot of sense. Not being dependent on propane, natural gas, oil. The house itself has been fabulous, oriented in a way that gives a lot of natural light. The clerestory is terrific for daylight.Testimony CitationHomeowners
