Echo Lake Residence
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Project Team
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Architect: Wagner Zaun Architecture, Duluth MN
Builder: Zeltwanger Construction, Hancock MN
Ratings, Awards and Recognition
The clients, who hired us to design this home on their lake area property, had done their homework. They had a good grasp of what they wanted to acheive, and how they might get there. The goal from the onset was a net-zero home with as much passive solar advantage as they could acheive with a house that would not be ideally oriented. They wanted to be able to "age in place" with mobility friendly features like a curbless shower, and they wanted to make a minimal long-term environmental impact. With an understanding of mechanical system options, and a pre-selected builder who was already delving into high performance building techniques, they brought us on to help turn their ideas into reality.
The Echo Lake Residence is a one-story, slab on grade, two bedroom, two bath home. The home combines 12" double stud exterior wall construction with better-than-average attic and sub-slab insulation, triple-glazed insulated fiberglass windows, a 7.7 KW PV array, and a ground source heat pump. The home was designed to blend well with the open, "prairie-ish" site and take advantage of the westerly lake views while adhering to the "not-so-big-house" principles. The house is simple in form and plan with a little extra architectural exuberance afforded to the entry porch and screened porch.
Quick Facts
General
Location | Farwell, Minnesota |
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Building Type | Single family detached residence |
Project Type | Zero Energy |
Basis of Performance Claim | Verified |
Bedrooms | 2 |
Bathrooms | 2.0 |
Conditioned Floor Area | 1,596 sq ft |
Energy Summary
Energy Data Type | Verified |
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Renewable Energy System Type(s) | Photovoltaics, Geothermal |
Ratings |
The house was granted a HERS rating of 0. |
Annual renewable energy generated | 10,450 kWh/year |
Envelope and Mechanicals
Subslab assembly |
The slab on grade main floor is a 4" concrete slab poured over 8" of XPS insulation (R-40) |
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Foundation wall assembly |
The foundation is a 6" core ICF stem wall atop a continuous concrete strip footing. |
Above grade wall assembly |
All exterior above grade walls are 11-7/8" double stud walls with 2x4 inner and 2x6 outer studs aligned @ 16" on center. The cavities were filled with dense packed cellulose. |
Door Assembly |
Exterior doors are insulated fiberglass units. The patio door is a tilt-turn unit to match the window unit's performance and glazing specification. The entry door is an insulated fiberglass unit with dual pane 1/4 lite glass. |
Air Changes per hour, ACH50 | 0.47 ACH50 |