Project Team

Mechanical Engineer

BuildingEnergy 16 Full Conference Business Member Green Company Manager Member Pro Tour Committee

BuildingEnergy 16 Full Conference Business Member Green Company Manager Member Pro Tour Committee

Mike Duclos is a principal and founder of The DEAP Energy Group, LLC, a consultancy providing a wide variety of Deep Energy Retrofit, Zero Net Energy and Passive House related consulting services. Mike is a HERS Rater with Mass. New Homes with ENERGY STAR program, a Building Science Certified Infrared Thermographer, the Certified Passive House Consultant responsible for the design and certification of the second Passive House in Massachusetts, holds a BS in Electrical Engineering from UMass Lowell, and two patents.

Energy Consultant

Bottom Lines - Facilitator Bottom Lines - Plan Bygg Bottom Lines - Steering Committee Business Member Green Company Manager Member Webform Results Access

Bottom Lines - Facilitator Bottom Lines - Plan Bygg Bottom Lines - Steering Committee Business Member Green Company Manager Member Webform Results Access

After a wide range of carpentry jobs and a bachelor's degree in History and Literature of Medieval Europe, Paul Eldrenkamp founded Byggmeister (Scandinavian for "master builder") in 1983. "I've always put a high priority on two things: fostering easy, friendly relations with our clients and building a team of people who are as interesting and diverse as they are talented and dedicated." Paul is a widely-recognized expert in high-performance homes and frequently speaks to industry groups and the public about energy efficient construction. He is also a founding partner of The DEAP Energy Group, a consulting partnership focusing on Passive House, zero-net energy, other high-efficiency building standards.

Energy Consultant

Other Team Members

Barbara Simko
Interior Designer

Steven Baczek

Dave Legg, Oliver Klein, Marie McMahon
National Grid
Deep Energy Retrofit Program Sponsor

Gary Bergeron, David Joyce, Alex Cheimets, Brad King
Synergy Construction

Mark Durrenberger, Jonathan Williams
New England Clean Energy
PV Installer

Patrik Muzilla
European Architectural Supply
High Performance Windows

Barry Stephenson, Aubrey Gewehr
Zehnder America
HRV & Ventilation

Honorata Loomis
Building Science Corporation
Energy Consultant

Brian Tierney
Energy Consultant

James Cobb
VP / Branch Manager
Eastern Bank
Home Equity Loan, Heat Loan

Ashley Sullivan
Heat Loan

Victor Fink

After shivering for 20 winters inside their drafty 1576 sq ft 1945 Garrison Colonial in Melrose, MA, owners David Fink and Barbara Simko requested a MassSave energy audit. The auditor stated that the house would be an excellent candidate for the National Grid DER program. Thus began their journey towards zero net energy.

The owners initially planned to remodel the house by replacing the kitchen and building an addition. Working with architect Steve Baczek and energy efficiency specialist Mike Duclos, the design gradually evolved via the National Grid DER program to one that did not add square footage. Instead, the project focused on energy efficiency, making super-insulation improvements per DER guidelines, lowering window heat loss, increasing window solar gain, and recovering living space occupied by obsolete mechanical systems.

The super-insulated all-electric DER renovation home includes full envelope insulation and air sealing, high solar gain triple pane windows, new doors, and new heating and ventilation equipment. The chimney and existing oil fired steam heating system were removed and replaced by two mini-split air source heat pumps. The existing gas hot water heater was replaced by an electric heat pump water heater. An HRV was added to recover exhaust air heat and provide adequate ventilation. A drain water heat recovery heat exchanger was installed in the basement to recover heat energy normally lost down the shower drains. Because the southern facing main roof was ideal for PV, a high efficiency PV array was added to solar power the house to reach the zero net energy goal. The project was completed in October 2013.

The DER project was one of six NESEA ZNEBA finalists in March 2015. For a 1 year time period starting on Jan 7th of 2014, actual performance exceeded zero net energy. Measured performance was:

9103 kWh - PV Energy Production (=100%)

8395 kWh - House Energy Usage (=92.2% of PV Production)

0708 kWh - Net Energy Surplus to Grid (=7.8% of PV Production)

Quick Facts


Location Melrose, MA
Building Type Single-family residence
Project Type Zero Energy
Basis of Performance Claim Verified
Bedrooms 3
Bathrooms 2.0
Conditioned Floor Area 2,706 sq ft
Total Cost of Project $347,659

Energy Summary

Energy Data Type Verified
Renewable Energy System Type(s) Photovoltaics
HERS Index: -1
Annual renewable energy generated 9,103 kWh/year

Envelope and Mechanicals

Subslab assembly

2 in XPS rigid foam (R-5/in) over existing concrete slab with drain mat below + 3/4 in plywood (R-1.25/in) flooring above.

Foundation wall assembly

2 in of XPS rigid foam (R-5/in) + 2 in of polyiso rigid foam (R-6.5/in), 3 in closed cell spray foam on rim joists, 0.4 in Spaceloft (R-10.3/in) used instead of polyiso near stairway to reduce thickness and maintain reasonable stair width

Above grade wall assembly

4 in of polyiso rigid foam (R-6.5/in) on exterior + 3.5 in of blown cellulose (R-3.4/in) in original wall cavities + 3/4 in plywood (R-1.25 /in) sheathing + 0.75 inch dead air space (R-1.0/in) + 0.5 inch gypsum board (R-0.9/in) + 5/16 in cement board siding (R-0.48/in)

Door Assembly

2 First Floor Entry Doors - Fiberglass, Therma-Tru, R-4, R-5.3
2 Basement Entry Fire Doors - Fiberglass, Therma Tru, R-7.1 base door
On basement doors, added 0.4 in Spaceloft (R-10.3/in) + 2.0 in XPS (R-5/in) to achieve R-21.2
Door average Rval = 7.4
Door average U = 1/7.4 = 0.14

Air Changes per hour, ACH50 1.43 ACH50