Lanesboro, Minn. — Joe and Mary are anchors at Eagle Bluff, educators and passionate advocates for sustainable local living. Their “airy” 1970s A-frame home was retrofitted in 2011 to a blower door test rating (for air tightness) of 0.45 ACH—a 92% improvement! We learned about Passive House at an Eagle Bluff event.
Lanesboro, Minnesota
Climate Zone 6 (cold/moist)
Latitude: 43° 44' 18'' N
Longitude: 91° 54' 48'' W
Net Treated Floor Area: 1,514 SF
Gross Square Footage (House only): 2,210 SF
Roof: R-99
Wall: R-61
Ground: R-53
Glazing: U-0.10 BTU / hour / sq. ft.
Solar Heat Gain Coefficient (SHGC): 0.48”
Frame: U-0.19 BTU / hour / sq. ft.
Specific Primary Energy Demand (Source Energy Demand): 12.1 kBTU / sq. ft. / year
Specific Space Heat Demand: 7.0 kBTU/sq. ft. / year
Peak Heating Load: 7,047 BTU / hour
Space Cooling Demand: 0.44 kBTU / sq. ft. / year
Peak Cooling Load: 3,625 BTU / hour
Pressure Test Goal: Whole House Air Changes Per Hour (ACH) = 0.4 ACH 50
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