Training, Classes & Research

If you’re interested in building performance, Dan and his team teach a wide range of classes to help contractors, architects, engineers, home design professionals, and homeowners understand how to improve typical California building details to achieve high performance outcomes.


We are regularly engaged to support utilities, builders, engineers and others with real world research assignments on various aspects of building science. This has ranged from the creation of test homes to myriad examples of HVAC performance measurements.

Utility Classes

We teach classes through many of the utility companies in California. These classes are offered free to participants and are supported by the ratepayers of those utility companies. These are great opportunities to learn more about real measured home performance. Learn more about our utility classes here.

Training at National Conferences

We regularly provide all day trainings and workshops at Building Performance Association (formerly Home Performance Coalition and Affordable Comfort ACI) national and regional conferences. These unique classes focus on measurable building performance. We often teach in conjunction with other high quality instructors including Mike MacFarland, Keith O’Hara, Gary Klein and Rick Chitwood.

Private/ Non Profit Courses

We are selectively available to provide contract training services to organizations and associations that want to go beyond the basics of a typical introductory building science course. We specialize in delivering courses based on real world conditions presented by the California building stock. If you would like us to design a custom training to meet your organization’s needs please contact us at 530-477-0695.

Are we the right company for your home?

We have very high standards. If you decide to work with us, you are assured of a home that performs well beyond what building codes require. We take the extra care and time to get it right. We're not for everyone, but if you want a home for life, we should talk.

TECH Clean California