George
Eliadis

George Eliadis runs Probook, a New York company selling something the technology industry has mostly ignored: software built for HVAC, plumbing and electrical contractors, and built by someone who has actually done the work. In June 2026, at 24, he closed a $40 million round that put two of venture capital's biggest names, Andreessen Horowitz and Sequoia Capital, behind the same company.

Probook calls itself an AI operating system for home services. In plain terms, it answers the phone, figures out which technician should take a job, and manages the back-and-forth with the customer from first call to finished work. Eliadis started the company in 2024, the same year he graduated from The Wharton School, and it now serves hundreds of clients across more than 35 states. The pitch is not that AI is magic. The pitch is that the trades have been running on a pile of disconnected tools, and someone who grew up inside the work should be the one to knit them together.

That someone spent six summers pressure washing homes in upstate New York with his father. It is the detail every profile of him leads with, and for good reason - it is where the product comes from. "I started Probook to solve a problem in my own business," he has said. "I grew up pressure washing in upstate New York with my dad." Two to three hours of each day went to driving between jobs. The rest went to the physical work, which left no room for running the business side of things.

That missed phone call is the seed of the whole company. In home services, a missed call is a lost job, and a lost job is lost revenue that never shows up on any dashboard. Eliadis took that frustration and, before writing a line of go-to-market strategy, went deeper into the industry. He spent a summer inside TR Miller, a roughly $40 million HVAC, plumbing and electrical shop in Illinois, rotating through the call center, dispatch and inside sales. He wanted to see how a well-run shop actually operated. What he found was that even the good ones were stitched together by hand. TR Miller later became Probook's first customer.

The hardest problem first

Most founders entering a new market pick the easy, visible win. Eliadis picked dispatch, which he describes as the hardest problem in home services. Dispatch is the decision of who goes where and when. Send a junior technician to a complex job and it comes back a second time. Send your best person to a routine fix and you have wasted your most valuable capacity. Get it wrong at scale and the whole shop runs slow. Probook uses a company's own historical data to match the right technician to the right job in real time, weighing skill, experience, capacity and location.

He is blunt about why so many AI vendors circled the trades and still missed. In his telling, the tools kept getting layered onto a system that was already broken, so shops paid more without getting simpler.

His answer is consolidation. Rather than sell one more feature, Probook aims to be the layer that runs the customer experience end to end, from intake and messaging to job assignment. On top of dispatch, the platform runs AI voice agents that handle inbound calls at every stage of a job, with the option to hand off to a human when a situation calls for it. The framing he uses for the next decade is simple: AI does the bulk of the work, and the team manages the exceptions.

What the numbers look like inside a shop

The company points to early results to make the case. In its founder letter, Probook cites customers like Summers Plumbing booking thousands of jobs a month with minimal manual intervention, Anthony Plumbing reporting higher revenue per job on leaner staffing, and Del-Air roughly doubling the number of technicians a single dispatcher could handle, from around 10 to 22. Those are the company's own figures, but they point at the thing Eliadis keeps returning to: the same crew, doing more, without drowning in phone calls.

Why two rival firms both said yes

The $40 million is stacked from a $34 million Series A led by Andreessen Horowitz and a $6 million seed led by Sequoia Capital. Getting both of those firms attached to one young company is unusual. Investors have been direct about what convinced them, and it was not a technology demo. It was the founder's resume. As the pitch around the round put it, most founders building for the trades have never worked in them, and George has. Sequoia partnered with Probook through partner Konstantine Buhler, filing the company under a plain label: AI for the trades.

The team around him is built on the same logic. His co-founders bring complementary roots - Ben Cervantez, whose background runs through the plumbing trade, and Lewis Zhang, the chief technology officer handling the engineering. The wider bench, by the company's account, mixes competitive-programming and math-olympiad talent with people who have shipped vertical software before. The bet is that field credibility plus real engineering is a combination the trades have rarely been offered.

A market bigger than it looks

The trades are not a niche. US home services is often sized around $700 billion, and it is fragmented across tens of thousands of independent shops, most of them running on phone calls, spreadsheets and the memory of a veteran dispatcher. That fragmentation is exactly why software has struggled there and exactly why Eliadis thinks the opportunity is large. He frames the company's purpose in almost civic terms.

The operator's habit of mind

What comes through in his public comments is not the usual founder polish. He talks about hours in the truck, about physical work, about the specific irritation of a phone you cannot hear. He is building for people who still make that two-hour drive between jobs, and he keeps the product tethered to their day rather than to a slide. That grounding is his edge and, if the trades are as slow to trust software as their history suggests, it may be the thing that lets Probook get in the door at all.

The company is early, and its most striking numbers are still its own. But the direction is clear enough. Eliadis is not trying to sell contractors another app to log into. He is trying to become the system that runs underneath the whole business, so the phone gets answered, the right person shows up, and the owner can get off the ladder.

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