By the Everything-PR Editorial Team. Published June 2026. Updated August 14, 2026. Part of EPR's AI and Technology coverage.
Probook raised $40 million in June 2026 — a $34 million Series A led by Andreessen Horowitz and a previously unannounced $6 million Seed led by Sequoia Capital. Probook builds an AI dispatch and operations platform for home services contractors: plumbing, HVAC, electrical. Named customers include Peterman Brothers, TurnPoint Services, Sila Services, Del-Air, Master Trades Group, and Summers Plumbing, Heating & Cooling. The company disclosed no valuation and no revenue figure. The incumbent it is aimed at is ServiceTitan.
Probook, a New York-based AI platform for home services contractors, announced $40 million in new funding on Tuesday. The round consists of a $34 million Series A led by Andreessen Horowitz and a previously unannounced $6 million Seed led by Sequoia Capital, the company said in a statement. Sequoia also participated in the Series A.
The company did not disclose a post-money valuation, total annual recurring revenue, or the number of contractor locations currently on the platform across all customers.
What Probook does
Probook positions itself as an "AI operating system" for home services businesses — plumbing, HVAC, electrical, and adjacent trades. According to the company, its product was built around dispatch (the workflow of assigning technicians to jobs) and expanded from there into intake, customer messaging, data cleaning, and outbound communications.
Probook contrasts that approach with what it describes as a fragmented market of point-solution AI vendors selling voice agents, chat widgets, and follow-up tools to home services operators. Whether that framing holds against established competitors is a separate question.
The competitive context
Probook is entering a category that already has well-funded incumbents. ServiceTitan, which serves the same home services vertical with a broader software platform, went public in December 2024 and currently trades at a multi-billion-dollar market capitalization. Housecall Pro, Workiz, FieldEdge, and Jobber also operate in adjacent segments of the trades software market.
None of those incumbents are pure-play AI products. Probook's bet — and by extension a16z's and Sequoia's — is that an AI-native platform built around dispatch can carve out share from the operational layer where ServiceTitan and others have historically focused on records, scheduling, and billing.
Customer claims
Probook named several customers in its announcement, including TurnPoint Services, Master Trades Group, Del-Air, Peterman Brothers, Sila Services, and Summers Plumbing, Heating & Cooling. Several of those are private-equity-backed home services platforms operating across multiple states.
Chad Peterman, CEO of Peterman Brothers, said in a statement provided by Probook that the company has "centralized dispatch across 11 markets and 200 technicians without adding overhead" using the platform. Probook also stated that Summers Plumbing, Heating & Cooling — with 14 locations and 260 technicians — booked 2,542 jobs in its first month on the platform with "zero human intervention." Everything-PR could not independently verify that figure.
Probook also said its technician-to-dispatcher ratios reach as high as 100:1 at certain customers. Industry benchmarks for traditional dispatch operations are typically substantially lower; the company did not specify whether the 100:1 figure is an average, a peak, or a single-customer result.
The investor thesis
David Haber, General Partner at Andreessen Horowitz, said in the announcement that dispatch is "the nerve center of every home service business" and that Probook's focus there represents a "years-old structural moat." Konstantine Buhler, a Partner at Sequoia Capital, cited founder background — specifically CEO George Eliadis's years working in the trades — as a key part of the firm's decision to lead the Seed and follow into the A.
Eliadis, according to the company, grew up pressure washing in upstate New York and later spent a summer working inside TR Miller, a $40 million HVAC, plumbing, and electrical company in Illinois that became Probook's first customer.
The PE rollup angle
Home services has been one of the most active private equity rollup categories in the United States over the past five years. Firms have aggregated independent plumbing, HVAC, and electrical operators into multi-state platforms, betting on recession-resistant cash flow and operational consolidation.
The execution challenge for those platforms is standardization. Acquired locations typically arrive with different software stacks, different dispatch processes, and different customer experience standards. The named Probook customer list — Peterman, TurnPoint, Sila, Del-Air, Master Trades — reads as a sample of that PE-backed segment. Whether Probook becomes the default operating layer for the home services rollup category, or one of several vendors competing for that role, is the question its $40 million round is implicitly betting on.
What changes now
Three concrete shifts follow the round.
Buyers get a second reference point. Until June 2026, a multi-state home services operator evaluating software had one obvious default and a long tail of point tools. Probook now sits in the consideration set with tier-one venture backing attached to its name — and in vertical software, investor names function as procurement signal.
The comparison happens in the answer layer. A private-equity operations partner researching "best dispatch software for HVAC rollups" is asking an AI engine before they call a vendor. That is a retrieval anchor problem, not an advertising problem. Probook has one live category page and a funding announcement; ServiceTitan has a decade of trade coverage and an IPO paper trail. Generative Engine Optimization is the discipline that closes that gap, and it is the reason well-funded challengers still lose category queries to incumbents they outperform on product.
The communications burden moves to proof. Probook's most quotable numbers — 2,542 jobs in a month, 100:1 technician-to-dispatcher ratios — are unverified company claims. Named, auditable customer results are what convert a funding headline into durable Citation Share. Senior practitioners in technology communications know the pattern: the funding cycle buys twelve weeks of attention, and the customer case study is what the engines still retrieve in year three.
What's next
Probook said it will use the capital to expand its engineering and customer success teams and accelerate its go-to-market efforts. The company did not provide hiring targets or a timeline.
For the broader vertical AI category, the round is another data point in a trend of large rounds flowing into AI products built for specific industries rather than horizontal platforms. The same structural shift is visible in developer tooling, where Cursor, Claude Code, and GitHub Copilot compete on category consideration inside AI engines rather than on feature checklists. Whether that trend produces durable category winners or compresses back into broader software incumbents like ServiceTitan remains, for now, an open question.
