Contact Us

Why Ontech Systems?

At Ontech Systems, we have maintained 98% of our clients since our inception – one of the highest client retention rates in our industry.  During regular business hours, we return phone calls and emails within an hour.  We’re not a break/fix firm. We take into consideration your company’s growth outlook as well. We don’t lock our clients into long-term contracts.

Serving Eastern Wisconsin since 2004

Are you an existing Ontech Systems Client in need of support?  Please contact us via the methods in our online support portal.


Greater Milwaukee IT Support
11800 W Park Place
Milwaukee, WI 53224
Phone: 262-522-8560
Hours: Monday – Friday 8am-5pm