About Hershel Sigma AI
Hershel Sigma AI is the company behind Hershel, an AI dialer for high-volume outbound sales and appointment-setting floors. Hershel Sigma LLC builds it and runs it for each client as a managed service, around the clock. Nathan Yonash founded the company, and Hershel was built on the solar appointment-setting floors he runs in Texas and Florida.
What Hershel is
Hershel is an AI dialer built on a proven open-source dialing engine, then rebuilt around AI: its own rep console, its own manager screens, and AI that runs dial pace, caller IDs and call notes.
Day to day, that means the dialer paces itself. Dialler Manager reads live campaign stats and moves the dial level so reps stay on calls while the drop rate stays under the ceiling the floor sets. The Shield watches every outbound caller ID for spam flags and carrier refusals and swaps out the numbers that go bad. Closable writes a brief from each appointment-set call and posts it on the contact in GoHighLevel before the closer shows up.
Each client gets its own dedicated dialer server. For how the pieces work together, read what an AI dialer is, or start at the homepage.
Who's behind it
Nathan Yonash started Hershel Sigma AI while running outbound solar appointment-setting floors in Texas and Florida. Hershel began as the tooling for those floors, something to keep the dial pace right as answer rates moved and to get flagged caller IDs out of rotation before they cost a day of calls. It's now offered to other outbound teams as a managed service. The legal company name is Hershel Sigma LLC.
How to spell Hershel
It's Hershel, H-E-R-S-H-E-L, with no c. The company is Hershel Sigma AI, the product is Hershel, and the site is hershelsigma.ai.
It gets typed a lot of ways: Herschel Sigma, Hershal Sigma, Hershell Sigma, Hersel Sigma. They all point to the same company. If your search for Herschel turned up backpacks, that's Herschel Supply Co., a separate business.
Hershel Sigma AI also has no connection to Sigma Dialer, SigmaMind AI or other companies with Sigma in the name. Searching the full name, Hershel Sigma AI, is the quickest way to land here.
Get in touch
Email info@hershelsigma.ai, or book a demo to watch Hershel run a floor. Pricing is a setup fee plus a flat monthly rate, scoped to floor size and call volume.
Frequently asked questions
Is it Hershel or Herschel?
Hershel, with no c. The company is Hershel Sigma AI and the website is hershelsigma.ai. Herschel Sigma, Hershal Sigma and Hersel Sigma are common misspellings of the same name.
Who makes Hershel?
Hershel Sigma LLC, founded by Nathan Yonash. The company builds Hershel and runs it for each client as a managed service, 24/7.
Is Hershel Sigma AI related to Sigma Dialer or SigmaMind AI?
No. Hershel Sigma AI is a separate company with no connection to Sigma Dialer, SigmaMind AI or other companies that use Sigma in their name.
Who is Hershel for?
Outbound sales and appointment-setting floors that live on contact rate, like solar, home services and other high-volume B2C teams.
See Hershel run a floor
A managed AI dialer: server, pace, numbers and notes handled 24/7.
Book a demo →