St. Louis Mechanical Contractor

For your Full Service Mechanical Contractor specializing in HVAC Equipment, Commercial Refrigeration and Food Service Equipment repair and Parts, look no further.

With Factory Authorized, Licensed and Certified Technicians we provide you with the most Dependable, Trustworthy Service, with added Value and Confidence which you, your family and business can rely on.

Since 1989 we have proudly served the St. Louis and Metro areas including Central Missouri and Southern Illinois. We provide our highest quality of workmanship everyday as we continue to build long term relationships with our clients.

For Dependable Service, Quality Installation and 1st rate Solutions in HVAC, Refrigeration and Commercial Kitchen equipment give Tri-State Mechanical a call today.  We service everything from rooftop units on a school or commercial building to residential heating and cooling issues.

We have 24 Hour Emergency Service available with an extensive parts stock for all Commercial and Residential equipment old and new. If we don’t have it we’ll find it.

Give us a call. You’ll be glad you did.


Our company has worked with Tri-State Mechanical for several years. The office staff and technicians have always gone above and beyond to service our customers’ needs timely and accurately. The technicians are very professional, knowledgeable and friendly. I would recommend Tri-State for all your service needs.
Johnson Northwest, Inc.         Read More Reviews>


Hello and Happy Thanksgiving…

With our 3rd year donating turkeys to the local food pantry we are proud to give back to the community we serve.

People struggle at times especially around the holidays and we all know it can be hard.

We have been Blessed with continued business throughout the year along with the good people we have working at Tristate.

So it’s an honor to give back to the community.

This year we were able to donate 75 Turkeys to Ritenour Food Pantry.

We take pride in the work we do but more importantly in giving help where its needed during this season, that’s a true reward from our efforts over this year.

HomeHappy Thanksgiving,
From All of Us at Tristate Mechanical Services