Questions? We’ve got answers.

Don’t spin your wheels, licensing is as deep as it is wide. We’ll navigate you through licensing and code differences as you travel from one jurisdiction to another. We know it isn’t easy, but we’re here and we know licensing.



Meetings that matter. Classes that count. Information that’s key.

Attend meetings that won’t waste your time; from industry to legislative updates to topics that will help you manage and grow your business. Our classes count for PEU credit and apprenticeship related instruction and our Metropolitan Area Mechanical Notes shares codes, permit processes, etc. for those areas not under contract with St. Louis County.

Government Relations


We go to meetings so you don’t have to.

Things are constantly changing and it’s our job to make sure you’re aware of what’s coming so you’re not confused at what’s happening. We monitor agendas, talk to leaders and advocate for you and the mechanical industry overall. We’ll keep you in the loop, ask for your input and share outcomes.

Apprenticeship and Workforce Development


Provide structure to advance careers; Attract talent to grow businesses.

Our Department of Labor apprenticeship program gives structure to technicians entering the industry. In addition, our online technical college works in conjunction with our DOL program for a sound academic foundation. Gateway is proud to know and work with area high schools and St. Louis Community College to introduce you to your future techs.

National Relationships


ACCA and Service Roundtable

Join Gateway and you have an automatic relationship with Air Conditioning Contractors of America and Service Roundtable. Both of these affiliate/associate member relationships allow for event discounts and additional benefits.

Apply for Membership Now!

Member Feedback

“Gateway is a great resource for contractors providing education, advocacy, and licensing for Missouri contractors.”


“If not for Gateway, we couldn’t keep up with the regulations and requirements; most businesses don’t have staff or expertise to deal with government.”

BRIAN AGERS, Agers Heating & Air Conditioning

“I cannot imagine trying to navigate through all of the obstacles thrown our way without Kellie and the team at Gateway.”

SHANE AWTREY, Awtrey Heating & Air Conditioning