Rebar, an AI-driven HVAC quotation solution, secures $14 million in funding.

Rebar is a startup focused on developing an AI operating system for commercial HVAC suppliers, and recently secured $14 million in Series A funding. The round was led by Prudence, with participation from Zero Infinity Partners, Founder Collective, Villain Capital, and Optimist Ventures. Founded in October 2024, Rebar uses AI to help commercial HVAC suppliers generate quotes 60% to 70% faster than traditional methods. It analyzes building blueprints with a unique computer vision model to identify, classify, and compile all HVAC equipment, generating material lists and quotes.

According to Rebar founder Evan Brown, the company’s main goal is to address the industry’s challenge of being unable to focus on specific areas due to trying to operate in multiple fields. AI, trained on millions of HVAC blueprints, can simulate the workflow used by actual quoting personnel. Within the first six weeks of 2026, Rebar doubled its annual recurring revenue, thanks to a surge of new customers.

Rebar currently has 40 clients, including seven companies that have invested in the startup. In addition to providing quote generation products for HVAC suppliers, Rebar plans to expand its capabilities to pipe and electrical equipment suppliers by adding agency functions. Brown, one of Rebar’s co-founders, said his interest in the HVAC industry stems from his industry experience, including childhood, which led him to see opportunities for process automation using AI.

Jordan Vinnie of investor Prudence commented that Rebar’s tools can reduce manual work by over 90%, leading to higher efficiency, lower costs, and increased profits. The demand for solutions like Rebar is growing in large-scale industries such as HVAC, piping, and electrical. In recent years, investment in real estate-related startups has rebounded, and innovative automation technologies like Rebar are gaining widespread attention.