Rebar

Rebar, based in the US, specializes in innovative estimating software tailored for the HVAC industry, enhancing job quote speed and accuracy significantly with advanced AI assistance. Rebar is a Seattle-based company founded in 2024 that focuses on developing specialized estimating software for the HVAC sector. The firm has conducted one deal, with its most recent being a Series A funding round on March 10, 2026, where it raised USD 14. 000 mn led by Prudence, alongside other investors including Founder Collective, Optimist Ventures, Villain Capital, and Zero Infinity Partners.

The founder's identity and prior experiences are currently not disclosed. Rebar specializes in hyper-specialized estimating software designed specifically for the HVAC industry, enabling users to accelerate job quotes by 60-70% with enhanced accuracy. The core product offering revolves around advanced AI-assisted tools that streamline the estimating process, including features like AI Equipment Marking, Automatic Room Search, and AI Addendum Change Summary. These tools facilitate rapid takeoffs for HVAC estimators, assisting firms in generating precise estimates and optimizing project workflows.

Rebar's customer base includes HVAC contractors, engineers, and firms involved in mechanical contracting across various markets, including North America and Europe. The software is tailored to meet the specific needs of these users by allowing extensive customization of takeoff templates and analytics to monitor estimating performance. Rebar generates revenue primarily through subscription-based models for its estimating software and associated features tailored for HVAC professionals. Clients typically engage in annual or monthly subscription agreements that provide access to the full suite of tools, including the one-click quote feature integrated with Price Select Software.

The transaction structure leans heavily towards B2B interactions, where HVAC firms and contractors subscribe to the service, enhancing their efficiency in estimating projects. Specific pricing structures for the subscription plans are set to cater to the varying needs of their clientele, ensuring accessibility for companies of different sizes while maintaining high-quality service. In March 2026, Rebar raised USD 14. 000 mn in Series A funding, led by Prudence, with participation from Zero Infinity Partners, Founder Collective, Villain Capital, and Optimist Ventures.

The company plans to utilize this funding to expand its AI operating systems and develop additional agentic solutions across HVAC workflows. Upcoming strategies include the launch of new products designed to enhance HVAC estimating processes, although specific release dates have not been disclosed. Additionally, Rebar aims to expand its market reach into Europe and other regions by the end of 2026.