Helix Earth has raised $12m in a heavily backed funding round to expand deployment of its commercial HVAC humidity control technology.
The Houston-based company develops retrofit systems for commercial and industrial building operators, designed to improve humidity management and reduce energy consumption without replacing existing HVAC infrastructure.
The funding round was led by investment firm Veriten, with additional investment from Rua Ventures, Carnrite Ventures, Skywriter and Textbook Ventures.
Helix Earth said the investment will support scaling manufacturing and accelerating deployment of its first hardware product, a retrofit system targeting a portion of the $150bn commercial air conditioning market.
The company’s hardware technology was co-invented with NASA and later commercialised through Rice University.
The company said building operators face rising energy costs, humidity control challenges and ageing HVAC infrastructure, with limited cost-effective retrofit options.
The system is designed to separate temperature control from moisture removal, aiming to improve indoor air quality, reduce energy use and lower maintenance costs.
Helix Earth said the technology is being deployed in commercial settings, with applications across buildings where humidity stability and energy efficiency are operational priorities.
Founded in 2022, the company previously raised $5.6m in seed funding and has received support from the US Department of Energy and National Science Foundation.