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Monday – Friday: 7:30 a.m. to 4:30 p.m. EST
Saturday – Sunday: Closed

Visiting an ONEIL Campus?

We’re committed to the safety of our staff and guests, as well as the security of customer information. Our facilities are access-controlled via key-cards and all employees are required to display photo ID badges. Visitors are escorted at all times while on-site, must sign in with our digital visitor management system, and wear timed, color-changing ID badges.

Download the Sine app to easily check-in with your mobile device as you arrive. Available in the App Store and Google Play.




Address: 495 Byers Rd. Miamisburg, OH 45342

Phone: (937) 865-0800

Fax: (937) 865-5858

ONEIL headquarters, occupying an 80,000 square-foot, state-of-the-art facility on a 16-acre campus.



Address: 2211 Oregon St. Unit D Oshkosh, WI 54902

Phone: (920) 237-2381

Fax: (920) 237-2388

Our largest satellite facility, with over 40 personnel dedicated to regional customers.