Student reviews

As a none engineer this course filled in a lot of blanks for when I build my little home.

If you would like to thoroughly understand and internalize the process and knowledge required to tackle the complexities of creating Deep Energy Retrofits, take this course! Marc knows his stuff!

Marc Rosenbaum uses his in-depth knowledge and experience in Deep Energy Retrofits to present a wealth of information in a manner that is easy to digest. Anyone interested in making a home or building more livable and energy efficient should benefit greatly from this course.

This course was an efficient and practical way to learn the ins and outs of how to conduct a deep energy retrofit on a building. The world be a much better place if every contractor and builder learned and applied the material in this course!

much to get out of marc's course on deep energy retrofit. looking forward to applying the knowledge to add one more der home.

This course will help in everyday analysis of building envelopes when it comes to new construction and in retro work. I believe it clears up or verifies preconception of how a structure leaks and retains heat. Specific attention is always on health and safety and moisture cause and effect.

I thoroughly enjoyed the course. It is very helpful to find different ways to improve energy efficiency, especially when you work in the industry. I was engaged throughout the course and finished within a short time.

The course is terrific. Marc Rosenbaum brings great energy, affection and experience to the subject. He combines a focus on fundamental physics and materials and methods concerns. The exercises and reading are interesting and helpful. - C. Burns 8/29/17

I really enjoyed this course! It is a great introduction to building science and residential construction techniques, with the focus being on energy reduction and savings. Marc speaks clearly and doesn't not delve too deeply into technical details or calculations, which allows for a well-established understanding of the topics at a high level.

This class provides the opportunity to study the subject matter at many levels, whether as a review, an introductory class, or for deeper understanding of particular topics.

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.

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.

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.

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.

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

Let me come back to this...

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.

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

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.

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.

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.

Only the comments above, for now. Thank you.

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!

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