Great Green Home | Afton Model by Amaris Homes
Few builders are bold enough to offer even a one-year guarantee on their homes. Raymond Pruban of Amaris Homes offered a 10-year guarantee on his model home in Afton, Minnesota, promising that it would be a net zero energy performer, producing as much energy as its occupants used each year, for 10 years. What inspired such confidence? Pruban had made a commitment to certify all of his homes to the strict performance criteria of the U.S. Department of Energy’s Zero Energy Ready Home program and, since making that promise in 2013, the custom home builder had already certified 11 homes through the program.
The DOE Zero Energy Ready Homes program is a home labeling program that requires builders to meet a host of high-performance requirements including certification to ENERGY STAR Certified Homes Version 3.0, the U.S. Environmental Protection Agency’s Indoor airPLUS, the insulation requirements of the 2012 International Energy Conservation Code, and the hot water distribution requirements of EPA’s WaterSense program. The homes must also have solar electric panels installed or have the conduit and electrical panel space in place for future installation of solar panels. Every home is performance tested by a third-party home energy rater to verify that the requirements have been met.
- Name: Afton Model
- Location: Afton, MN
- Layout: 4 bdrm, 2.5 bath, 2 fl, no bsmt, 3,734 ft2
- Climate Zone: IECC 6A, cold
- Completion: September 2016
- Category: Custom Spec
Modeled Performance Data:
- HERS Index: without PV 39, with PV 9
- Projected Annual Energy Costs: without PV $1,960, with PV $700
- Projected Annual Energy Cost Savings (vs typical new homes): without PV $2,000, with PV $3,350
- Projected Annual Energy Savings: without PV 10,900 kWh, 1,100 therms; with PV 15,300 kWh, 1,100 therms
- Added Construction Cost: without PV $500, with PV $40,000
Companies: U.S. Department of Energy