Jarrell Contracting offers a full spectrum of mechanical services for commercial, industrial, institutional and government projects of any size nationwide. In all aspects of our company, we hold ourselves to the highest standards to give our customers the highest quality customer care and services.


  • Registered Professional Engineers

Our engineers have the experience and creativity to design and configure your new or replacement heating, cooling, and refrigeration systems specific to your needs and specifications.

  • In-house prefabrication

By using in-house prefabrication, we can cut costs, shorten construction time, and avoid the hassle of inclement weather.

  • Building Information Modeling (BIM)

BIM is a 3D graphics software that allows our engineers to make better design decisions early in the process and to make any changes along the way quickly and efficiently.

  • Energy Solutions

Our Green Energy Management Solutions (GEMS) team is dedicated to helping our clients to find cost effective solutions that will save energy and money.


Pre-Construction Services

Before we’ve moved on to project implementation, we look at the design from all angles to make sure that it is sound, valid, and cost-effective.

  • Design validation

Our designs are strictly validated to ensure that all calculations are accurate and that all specifications and requirements are satisfied.

  • Concept evaluation

Our designs are thoroughly evaluated for their constructability.

  • Extensive and detailed pre-construction cost evaluation

We give our design an extensive cost evaluation to ensure we are implementing the most efficient use of resources and money

  • Scope of work determination

We determine the scope of the work involved in the project so that you are better equipped to make informed decisions about investments.


Mechanical Construction Management

  • Safety conscious constructability

Our employees always uphold the highest safety standards and practices.  Safety is the culture we create and our employees are a reflection of that.

  • Effective cost savings construction practices

We use high-quality materials while remaining cost-conscious in our construction practices.

  • Project coordination

Our expert project managers are highly skilled in managing all aspects of the build and making the entire process come in on time and under budget.

  • Quality control planning and execution

Strict quality control ensures that the construction team has completed the project following all specifications from our engineers.

  • Green building construction techniques

Our Green Energy Management Solutions (GEMS) team will ensure that the completed project runs at its optimal, energy-saving performance.  We are an Ameren Strategic Partner in supporting sustainable energy consumption.


Construction Services

  • Controls

We can design and install a new control system or revitalize your old one for a better, more efficient performance.

  • Service/retrofit

Our engineers can design HVAC systems that are retrofitted to your old system that can save you energy without the cost of a new system.

  • Sheet metal

All of this work in-house with computers, we can facilitate more aggressive construction schedules.

  • Piping

We fabricate all piping in our piping shop and therefore, we can have it all made before construction begins.

  • Plumbing

We offer a full range of plumbing services including Design-Build work, Plan and Specification installations, and 24-hour plumbing service solutions.

  • Air and Water Balancing

With our air balancing service, we make sure your system is working at its peak performance by testing air flow and diagnosing problem areas and making adjustments.  We are NEBB certified.