Probook raises $40M for home-services dispatch AI; technician-to-dispatcher ratios hit 100:1

Probook, an AI operating system for home service dispatch, raised $40 million in combined funding: a $34 million Series A led by Andreessen Horowitz and a $6 million seed round led by Sequoia Capital. Sequoia also participated in the Series A. The platform automates dispatch, scheduling, customer communications, and data verification for plumbing, HVAC, electrical, and maintenance service providers. Unlike chat bots or lead-generation tools, Probook targets the operational nerve center: real-time technician assignment based on skills, availability, expertise, location, and expected job value.

Customer deployments demonstrate material impact: Summers Plumbing, a 14-location Indiana operation with 260 technicians, booked 2,542 jobs in its first month on Probook with zero human intervention. Del-Air, an 8-location Florida shop, doubled dispatcher productivity from 10 to 22 technicians per dispatcher while cutting costs. Technician-to-dispatcher ratios as high as 100:1 have been reported—far above the industry norm of 5–10:1. Founder George Eliadis, 24, built the platform after observing dispatch inefficiencies in his family's pressure-washing business and later at a $40M HVAC company.

Probook operates as a ServiceTitan partner, embedding dispatch automation within existing workflows rather than requiring operators to rip-and-replace their core software. This positioning taps into a structural tailwind: the home services market is approximately $700 billion, and private equity rollups of local HVAC and plumbing shops grew 88% year-over-year through mid-2025. Multi-location PE-backed operators who have outgrown small human dispatch teams but are not yet enterprise-scale are obvious early targets.

For practitioners, the strategic signal is that vertical AI is moving beyond chatbots and lead generation into operational decision-making. The $40M raise and a16z + Sequoia backing validate that dispatch optimization—not customer acquisition—is the bottleneck in home services. The 100:1 productivity ratio and first-month zero-human-intervention bookings suggest Probook is solving a genuine constraint, not just incremental efficiency. As PE consolidation continues and technician labor remains tight, demand for dispatch automation will likely remain strong.