Our Mission

Buildings are the largest source of carbon emissions in the US — emitting ~1/3 of all US GHG emissions across 100 million buildings — and not enough is being done to eliminate their emissions. To reach our climate goals we need to quickly and aggressively reduce our footprint. But today, meaningfully reducing a home’s footprint is out of reach for the average homeowner, prohibiting them from taking action.

ZERO was created to accelerate the transition to sustainable living by enabling hassle-free retrofits that affordably improve the comfort of your home and eliminate its emissions. We’re simplifying an unfortunately complicated process to help homeowners understand what needs to be done, how much it will cost and who they can trust to get it done right as quickly and simply as possible.

We’re on a mission to eliminate emissions from 100 million buildings in the US, join us and together we can rebuild America for a more sustainable future.

- Team Zero


Grant Headshot

Grant Gunnison

  Founder and CEO

Grant is passionate about improving the lives of folks at home and solving the climate crisis in buildings. Having grown up in a contracting business, he is an expert in residential construction. Today, Grant leverages his engineering expertise to create simpler, more delightful experiences for homeowners and contractors. Prior to starting Zero, Grant was at NASA and MIT developing small satellites.


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Wale Odukomaiya, PhD
R&D Engineer,
National Renewable
Energy Laboratory
Bart Headshot
Bart Bohn
Executive in Residence,
Austin Technology Incubator
Mitch Headshot
Mitch Tyson
NECEC Co-Founder