Deep Energy Retrofits – Self Study Online Course


Deep energy retrofits employ a comprehensive, “whole building” approach to upgrading an existing building to significantly reduce its energy consumption.


A deep energy retrofit is a comprehensive process of upgrading an existing building to significantly reduce its energy consumption. This typically involves improving the building envelope (the walls, roof, windows, etc.) to better insulate and air seal the structure, upgrading heating, ventilation, and air conditioning (HVAC) systems and installing high-efficiency lighting and appliances. In some cases, renewable energy technologies like solar panels or geothermal systems may also be added.

Why Are Deep Energy Retrofits Important?

The existing building stock is a significant source of carbon emissions, and retrofitting these structures can make a real impact on reducing those emissions. Deep energy retrofits can reduce energy consumption in existing buildings by as much as 50%, which translates directly into reduced emissions. In addition, these retrofits can also improve indoor air quality, increase occupant comfort, and enhance building resilience.

Deep energy retrofits are also a practical approach because they leverage existing infrastructure, rather than requiring the construction of new buildings or infrastructure. Retrofitting existing buildings can also create local jobs and provide local economic opportunities.

A deep energy retrofit is also a proven way to increase net operating income (NOI) and boost property values.

While a deep energy retrofit is a promising approach to reducing emissions in the existing building stock, there are several challenges to implementing them. One of the biggest barriers is the upfront cost of these retrofits, which can be significant. While these concerns may be addressed through CPACE or other financing measure, building owners may be reluctant to invest in energy efficiency improvements that have a long payback period.

About This Course

In this deep energy retrofits online course, you’ll learn how to best ‘fix what you have’ in the existing buildings world. If you are serious about transformative energy upgrades in existing multifamily residential and commercial buildings up to 45,000 square feet this course is right for you.

Forget the theory. This course will fundamentally change the way you approach retrofit projects, while build your network of like minded professionals. Your practice will never be the same.

About The Instructor

Marc Rosenbaum, P.E. uses an integrated systems design approach to help people create buildings and communities which connect us to the natural world, and support both personal and planetary health. He brings this vision, experience and commitment to a collaborative design process, with the goal of profoundly understanding the interconnections between people, place, and systems that generate the best solution for each unique project. Design practiced at its highest level goes beyond efficiency and conservation to create places that regenerate and nurture the natural world and all of its inhabitants.

Current areas of concentration include Passive House design, Deep Energy Retrofits, and Net Zero Energy buildings.

He has been published in ASHRAE Journal, Fine Homebuilding, Northeast Sun, Solar Today, Journal of Light Construction, and Northwest Builder, and is a member of the Advisory Board of Environmental Building News.

He is a frequent speaker on sustainable design and has been a featured presenter at many conferences, with audiences that include architects, engineers, construction professionals, facilities managers, planners, educators, utility professionals, and those working in the public sector.

An experienced and enthusiastic teacher, he has trained thousands of professionals and especially enjoys working with students. He holds BS and MS degrees from MIT, where he studied mechanical engineering. He is a licensed engineer in NH, VT, MA, and ME, a Certified Passive House Consultant, and is a LEED Accredited Professional.

Projects of his have won awards from the Northeast Sustainable Energy Association (NESEA – four times a winner), ASHRAE (twice a winner), and the Energy Efficient Building Association (EEBA). Three of his projects have been on the American Institute of Architects (AIA) Earth Day Top Ten list. The French Wing for the Society for the Protection of NH Forests earned a LEED Gold certification, the first LEED certified project in New England.

In his practice of sustainable design consulting, he has worked for institutional clients such as MIT, Vermont Law School, Yale, Dartmouth College, Cambridge School of Weston, and Middlebury College; non-profit clients such as the Society for the Protection of NH Forests and the Woods Hole Research Center; commercial clients such as Stonyfield Farm, Inc., Tom’s of Maine, and the Hanover Consumer Co-op; cohousing groups such as Pioneer Valley, Pine Street, Island Cohousing, Peterborough, Cobb Hill, and Alchemy Farm; with many architects including William McDonough Architects, Maryann Thompson Architects, Kaplan Thompson Architects, Solar Design Associates, Bruner Cott Associates, Coldham & Hartman Architects, Moore Ruble Yudell, and Payette Associates.