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Student Ratings

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Courses with student ratings: 3

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Featured Ratings

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by Ahmed A 08/13/2016

by Josh Jackson, Partner, TimberHomes Vermont 08/08/2016

Marc is a terrific instructor who knows his stuff and is generous in sharing it!

by Todd Mcgill, Solar PV Installer/Tech, "Solar Contract Worker" (various) 08/08/2016

A very simple course to add to your resume. Great course.

by Muhammad Asaf, HVAC mechanical supervisor , SGH group at Batterjee Medical College 06/22/2016


by Michael Schunk, Owner/Architect/CPHC, Home Energy Design Services 06/05/2016

Don't take this course! You'll become an addicted energy junky and want more, and more, and more..... seriously, its the best!

by Spencer Richland, Architectural Designer 06/03/2016

The 10 week format along with terrific information was perfect for my situation of needing flexibility and time to digest and apply this information in a real world project. Thanks for the extension to June 3 by the way, it was perfect!

by Jer Greene 06/03/2016

I would highly recommend this course to anyone interested in how we might make this world a better place through energy-efficient, utility-independent, residential design and construction.

by John Saveson, Energy Analyst/HERS Rater, Center for EcoTechnology 06/03/2016

A terrific class and instructor. The instructor is passionate about the material, extremely knowledgeable, helpful, and a great communicator.

by I. Nate Scaglione, Sustainable Designer 06/03/2016

A wonderful, fun, and extremely informative course.

by Frank Pietrzak 06/02/2016

Excellent primer and extensive overview of NZE Homes! Instructor Marc Rosenberg openly shares his extensive knowledge of the design and construction elements for creating a successful outcome to various building challenges be it "new construction" or retrofit modifications. Be prepared to learn a lot.

by Dylan Kinsey, Owner/Builder, Kinsey Construction 06/02/2016

Marc's course greatly expanded my understanding of energy use in buildings and the potential of super insulated, low energy homes. The tools, materials, and guidance Marc offers in this course are indispensable to anyone in the trade. I highly recommend it!

by valerie White, owner, White Architects llc 06/01/2016

Marc is a wonderful teacher and communicator. If the construction industry is going to change to high performance construction, we need to make sure certain key concepts become the new norm. Marc is clearly a forerunner in creating this new path. If he had an sequel to this course, I would take it.

by david sims, director, ecological systems 05/16/2016

not yet

by Ana de Lima 05/15/2016

I liked the course and I am waiting for the next course at this website.

by Edson Yamamoto 05/10/2016


by Jason Ashford 05/09/2016

It's epic and grand. Thanks again!

by Raghunadha Vadlamudi, Country Head, Bahrain Solar Industry Association 05/06/2016

Very Introductory & Interesting



by Shaker Katu, Urban Planning Specialist LEED AP BD+C, Royal Commission of Jubail 04/11/2016

Thank you!

by Joseph LaRusso, owner 1 old house 04/10/2016

Marc's presentations are always thoughtfully constructed, clearly written, and appropriately paced. This lecture was no diffirent.

by Omar Elleuch 03/25/2016


by zafaruddin Stanikzai 03/13/2016

the course was well designed, well organized and well delivered.

by AMIT KUMAR 03/09/2016

yes i enjoyed the course nd i think this course is the best course

by Casey Lennon, Pv Installer/Technician/Designer , KW 03/08/2016


by Yvo Hunink 03/08/2016


by Dennis Caliyo, Jaredco Solutions, LLC 03/05/2016


by Fidelis Etugbo, project supervisor , Fetugbo global services limited 03/03/2016

The course provided more knowledge on storage advantage

by Jeffrey Delgado 03/02/2016

Everyone should take this course.

by Tom Davidson, Senior Mechanical Engineer, DLB Associates 01/20/2016

Marc Rosenbaum has always taught top-notch courses with a unique mix of expertise, humor and humanity. His new Deep Energy Retrofits course was no exception -- I highly recommend it.

by John Poole, Tradesman in Chief, Birmingham Point Preservationists 12/24/2015

Marc's approach to deep energy retrofits is technically astute, pragmatic, and replete with a broad range of real world case studies. I completed this course understanding far more about DERs than I'd ever imagined.

by Joseph LaRusso, owner 1 old house 12/18/2015

This is the second course that I've taken with Marc (I'd taken his Zero Net Energy Homes course previously), and the superlative quality of Marc's instruction and assembled materials were entirely consistent with his ZNE course. I highly recommend Marc's courses.

by Laura Fitch, Principal, Kraus Fitch Architects 12/17/2015

This course is excellent. We need to make big changes to reduce energy demands in our changing world. Retrofitting existing homes is a really important part of that. This class will help building professionals do just that - the important work of our industry.

by Edward Bell, Principal, Lawson Bell Architects 12/17/2015

If you are interested in the future of energy conservation in the built environment, this is a great starting point.

by Dave Cornell, Architect/Contractor, The CORNELL Architectural Group pllc 12/13/2015

Let me come back to this...

by Reid Betz, Principal, Ageloff & Associates 12/09/2015

This is an excellent course for anyone interested in building or designing buildings with a high level of thermal and energy performance, particularly if you work in existing buildings. The instructor has a wealth of practical knowledge to share and the Heatspring team does a wonderful job supporting the course.

by Justin Tourigny, builder, NxE Building 12/06/2015

Anyone interested in obtain a good foundation in DER should start right here with Marc and HeatSpring.

by Peter Brooks, Owner, Brooks Architecture 12/01/2015

This is the second course of his that I have taken, that should tell you something. Marc is on the cutting edge of Net Zero and DER design. He covers all aspects that are needed for a complete design of the technical engineering aspects.

by Myrt Jaquay-Wilson, Estimator, Wright Builders, Inc 11/28/2015

Marc's wealth of knowledge and years of field experience create an unparalleled learning experience. Seldom does anyone so truly walk the walk they talk.

by Irving Yee, Architect, Ethelind Coblin Architect 11/28/2015

Marc is a true Master of doing Deep Energy Retrofits. His ability to breakdown concepts and deliver each topic in simple terms makes this course easy to understand. It is great for licensed professionals and contractors who want to expand their knowledge and businesses. It is also fun for ordinary folks who just like houses. It's for everyone who wants a low energy, super comfortable home.

by Matthew Bartle, Project Manager, Hayward Design Build 11/24/2015

Marc knows his stuff. Building science is ever evolving, yet Marc describes the basics and their real world applications in great detail. Building smart means saving energy dollars down the road. Marc lives and breathes these ideas and shows simple ways to implement them in everyday construction.

by Ann McKinley, Owner, Heavenly Holdings 11/22/2015

Great class to bring you up to speed on net zero energy houses and how to build them.

by Dan Edelstein, Architect, Daniel Edelstein/Architect 11/20/2015

M.R. cuts thru the obfuscation of the Zero Net Energy Home conundrum like a finely honed hardened steel cleaver arcing thru the air and slicing thru a piece of nice warm brie, effortlessly getting to the heart of the matter.......only with a lot less mess!

by Joe Bosworth, CEO, Holyoke Design Center 11/19/2015

Only the comments above, for now. Thank you.

by Mark Graham, Principal, Liminal Architecture 11/19/2015

I would recommend this course to anyone interested in sustainable architecture.

by James Bell, Associate Engineer, National Grid 11/18/2015

The Deep Energy Retrofit (DER) course was fun. This course helped me understand complex DER concepts in a comprehensive and understandable matter. Building science is awesome!

by Brian Roberts, Managing Partner, Landmark Services, Inc 11/18/2015

Feel free to use comment above if you'd like.

by James Pepitone, Construction/Energy Specialist, Neighborhood Housing Services of New Haven 08/06/2015

Every person, no matter what experience, degrees, or status, interested in high performance housing should take this course

by Erik Block, Owner, Erik Block Design Build 07/28/2015

My final project was never reviewed. I was disappointed in the lack of feedback on this.

by Allan P 02/01/2023

by Ammar A 01/23/2023