March 17 & 24 High Altitude Habitat for Humanity Home


Last year, Cillian Liam Barrett oversaw the design and building of a 1,000-square-foot, two-bedroom home for Habitat for Humanity in Gunnison, a community  nestled in the valleys of the Rocky Mountains at an elevation of 7,703 feet. The home features 20-inch wall cavities, a breathable wall system, and heat recovery ventilation heat pump system. This January, in the middle of winter, the house generated a $50 electric bill in a completely electric-powered home.


Join us for this two-part series looking at the construction techniques and energy performance of this near Net Zero Energy home built at high altitude in Gunnison, Colorado. On March 17, Barrett will cover the construction techniques he used. On March 24, he will discuss the energy performance to date.



Registration required. More info: or 907.229.1982

COST: Free to members/$10 each to non-members *Student and hardship rates available.
1 CEU per webinar available – Additional $20
*Join ACAT now at a cost of just $25/year,

March 17, 2021 | 3-4PM: High Altitude & High Efficiency Home: Construction Techniques

March 24, 2021 | 3-4PM: High Altitude & High Efficiency Home: Construction Techniques

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Cillian Liam Barrett, Owner, Hearth Design Build
(Architectural Technician, PHIUS Certified Builder, BPI – IDL Certified)

The owner of Hearth Design Build, Barrett is on a mission to influence his profession to construct houses that are not only more affordable, energy efficient, and environmentally sound, but also safer for homeowners and building crews.