The Bridge Home is an Energy Star Certified New Construction, DOE Zero Energy Ready, and Green Star Certified Silver Home built by Endura Performance Homes.

The home’s neighborhood, the New Neighborhood, and development follow the original Village of Empire planning with narrow lots, rear alleys with garage access and 10’ setbacks. Design guidelines encourage front porches and design reminiscent of the 1920s and 30s. The single story home design was inspired by an original Sears Home Plan, the Sear’s Argyle, in the form of a 1300 SF two bedroom, two bath cottage with a partially finished basement and third bed/bath to accommodate friends and family.

The home is built on Endura Performance Home’s typical construction standards based upon Pretty Good Home principles, which promote optimization of energy efficiency, air quality, and cost based on locally available materials and skills. The design and construction principles focused on a reasonable sized home, insulation, air sealing and indoor air quality. This was achieved by adding exterior continuous insulation to 2×6 wall construction, double pane casement windows, a ventilated attic with blow-in insulation, pre-cast insulated concrete basement, air sealing using a combination of Zip R panels and an automated airsealant technology as well as a ducted Energy Recovery Ventilation (ERV) System.

The home design and construction are EPA Indoor airPLUS Qualified which evaluates a home’s indoor air quality features. The home is all electric featuring induction cooking and a cold climate heat pump with ducted air handler. The ducted ERV pulls all return air from the bathrooms and laundry room eliminating direct vent bath fans. The home is very tight with a final Air Change per Hour (ACH) of 0.69 @ 50 pascals. The home missed the Passive Home air leakage metric largely because of the use of an air vent for the kitchen exhaust. This is a good tradeoff for today’s very tight homes which need balanced ventilation and the ability to manage fresh air intake.

The home achieved a final Home Rating Energy Score (HERs Rating) of 14 which includes 4.86 KW solar array and 13.5 KW of battery backup/storage.

Give us success stories as well as lessons learned

The ducted ERV is one of the more successful choices of the project. Ducting the ERV return to each bathroom and the laundry effectively reduces humidity levels, recaptures that energy and eliminated direct vent fans and the associated need for makeup air in a tight house. However, the ERV controls could be improved. There is no wifi connection. We don’t have a way to remotely reduce ERV run time during extreme cold or during potential weather events where power failure is a risk.

The biggest lesson learned is the value of the solar generator (battery backup). This component of the solar installation contribute more energy reduction than expected. The primary intent was for a backup power source vs. a gas fire generator. We are considering increasing the capacity by adding a battery which is a plug and play option.

Tell us what is unique or innovative about this project

The application of the Pretty Good House model to achieve Energy Star Certification. The use of locally available materials and supplies makes it easier to work with the local contractor base as well as receive materials. Sourcing more innovative materials and equipment is a challenge in a location far from the larger metro areas of Michigan. A focus on managing the homes footprint, the appropriate insulation levels, good(but not exceptional) windows and a sound ventilation and make up air strategy delivered the desired results. We did splurge on automated airsealent technology which in the end was probably unnecessary.

Tell us about your place or location strategy.

We choose the Village of Empire for the proximity to the National Park, Lake Michigan, the local foods and availability of trails year round. We were seeking an active lifestyle as well as a healthy environment with an abundance of local foods, farms and markets.

With GreenStar Homes requiring a climate risk assessment, we reviewed the Portfolio Protect tool by Enterprise and determined there were no high climate risks in the area to require action at the silver level. We noted Cold Waves presented a medium risk, which was protected again with superior energy efficiency through a low HERS rating and DOE Zero Energy Ready Certification.