A-1 Interstate Mechanical, LLC was founded under the laws of the State of Missouri on September 13, 2004. We are a family owned and operated full service heating, air conditioning and ventilation installation and service company. As a family owned business we value and treat each customer as a part of our family.

Principles average over 30 years of professional service and installation experience in all fields of the commercial

                                               and residential HVAC industry.

Principles and Key Employees:

Owner/CEO: Christie Harness

Accounts Manager: Thomas Halley

Service Manager: Joseph Halley

Technicians and Installers: Tim Spiegel and Glenn Boemker