We’re not just installing a system. We’re building a relationship for life.

In service since 1954, Jarrell Contracting is a single-source mechanical contractor dedicated to providing quality service and value to every project. Our design build team offers reliable and cost-effective designs for these projects. Read more on how Jarrell Contracting is engineering your changing environment.

Case Studies

SLU Grand Hall Dorm

Jarrell Mechanical completes HVAC work on the new $71 million SLU Grand Hall dorm. Grand Hall will house 528 first- and second-year students on six residential floors in single and double suite-style rooms. The hall [...]

Our History

Jarrell is a full-service mechanical contractor. In our business, relationships are everything and we have been very fortunate to make a lot of friends since our founding in 1954. We are consistently among the top 100 largest mechanical contractors in the country. We’ve been listed as the second largest mechanical contractor in the St. Louis area for the past seven years by the St. Louis Business Journal. Our success is due to our emphasis on relationships and putting our customers’ needs first.

We take pride in the high level of customer satisfaction we continually achieve and hope that we have the opportunity to provide all your mechanical contracting needs. After all, you can never have too many friends.


“BSI Constructors has counted on Jarrell to deliver quality HVAC systems on many of our most significant projects. Jarrell has an outstanding design team that consistently delivers the right combination of quality, first cost, and energy efficiency that best serves our clients. Jarrell’s field management is consistently strong. Most important, the Jarrell’s operate their business with the highest degree of integrity and are always true to their word.”
Paul Shaughnessy, President, BSI Constructors
“When I think of Jarrell, the words ‘Trustworthy, Quality and Design-Build Expert’ immediately come to mind. HBD has relied on Jarrell’s expertise for over 40 years and three generations of ownership, and continues to do so.”
Michael J. Perry, President, HBD Construction, Inc.
“The Team at Jarrell is one of the best I have worked with in my 25 years at Korte and almost 30 years in the design and construction business. The spirit of true partnering permeates the organization, from the President, Michael Jarrell, Sr. to business development, engineering, estimating, field production, to commissioning and callback. The Jarrell family has developed a first class organization of professionals dedicated to project success. We expect the best from our teammates. Jarrell has always met our expectations.”
Michael L. Tubbs, Senior V.P./Project Executive, The Korte Company
“Jarrell Contracting has been a tremendous asset to our firm. LCS’s main objective is to provide high quality projects that stand the test of time. Partnering with Jarrell aids in our ability to do just that. Their dedication to the project objectives, loyalty to the project team, and most importantly the quality of the workmanship and products used speaks volumes to why they are a leader in this industry. Their extensive experience allows the project team to have the seamless ability to collaborate and problem solve thus keeping the progress of the project moving forward. Whether or not you are looking for HVAC or Plumbing, there is not another contractor that will provide the level of service or quality like they will.”
Steve Layne, Layneco Construction