Gradient, a company built by thermal scientists to rethink HVAC and build products that are good for the planet and great at cooling and heating homes, has closed a Series A funding round of $18 million, co-led by Sustainable Future Ventures and Ajax Strategies with participation by Safar Partners, Climate Tech Circle, Shared Future Fund, At One, Impact Science, and others.

Gradient is rethinking HVAC. We build products that are good for the planet and great at keeping your home comfortable, starting with a replacement for the window AC. Gradient is founded by thermal scientists and engineers and flanked by talent from juggernauts like Tesla and Nest, all aligned behind a mission to cool the world. Gradient aims to reduce the carbon emissions from heating and cooling systems, which represent 20% of emissions globally. Backed by Otherlab, Gradient has secured more than $9M in non-dilutive government grants from the U.S. Department of Energy, California Energy Commission, and California Strategic Growth Council grants, in addition to venture funding.