As a leading Mechanical and Maintenance contractor, our commitment to excellence extends beyond technical proficiency to prioritize safety as the cornerstone of our services. In both industrial and commercial settings, we specialize in delivering comprehensive solutions that not only optimize mechanical systems but also uphold the highest standards of safety. Our dedicated team is well-versed in industry best practices, ensuring that every installation, repair and maintenance project is executed with meticulous attention to safety protocols. We believe that a secure working environment is paramount, and our integrated approach seamlessly combines mechanical expertise with a steadfast commitment to the well-being of our clients and their facilities. Choose us as your trusted partner, where reliability, efficiency and safety converge for unparalleled service excellence.

Our Services include:

• Mechanical Construction: Precision and expertise in mechanical installations and upgrades.

• Certified Air Balancing: We are able to balance commercial HVAC systems up to 25 tons, including Kitchen Exhaust and Make-Up Air systems.

• Commercial Construction: Comprehensive solutions for commercial projects tailored to your unique needs.

• Industrial Expertise: Specialized services for challenging industrial environments, including airports and petrochemical facilities.

Get in Touch:

Ready to elevate your construction experience? Contact us today to discuss your project needs and let MJCS be your partner in building success.

Phone: (832) 334-6751

Email: mmonroe@mjcsllc.com or jmonroe@mjcsllc.com 

Certified Air Balancing - MJCS is proud to be one of the few who are certified through the National Comfort Institute in Commercial Air Balancing. We are able to balance commercial HVAC systems up to 25 tons, including Kitchen Exhaust and Make-Up Air systems. We offer a solution-based approach to air balancing, as we have maximized the efficiency and comfort of hundreds of HVAC systems. This is the primary strength we bring to your projects.

As your testing and balancing contractor, MJCS is to furnish all labor, testing materials and instruments, support equipment and tools, and reporting documents incidental to our scope of work. Testing and balancing may not begin until the mechanical systems are 100% complete. We provide correlation between the mechanical trades to participate in the operation of systems to produce effective results. 

MJCS offers the following services to our clients. We provide a full spectrum of test and balance services as well as HVAC system diagnostics and a variety of customized services. Please call us to discuss your needs at (832) 334-6751.

• Air systems Test and Balancing

• HVAC System Diagnostics

• Indoor Air Quality Testing

• Comfort Balancing 

• Duct Leakage Testing

• Building Pressure Testing 

• Kitchen Exhaust & Make-Up Air Systems 

• HVAC System Commissioning 

• Combustion Efficiency Testing

• Carbon Monoxide Safety Testing

• Cooling and Heating System Efficiency Rating (CSER and HSER Reports)

• Temperature Diagnostics

• Humidity Testing

• HVAC System Delivered BTU Verification 

• Verification of Control Operational Sequence

• Motor Power Measurements 

• Belt Size Calculations, Belt Tension Measurements 

• Inspection of HVAC Systems 

• Verification of Air Changes Per Hour 

• Economizer and Outside Air Measurement 

• Pre-Engineering System Testing and Assessment 

• As Built Drawings 

Industrial Services - We perform the majority of our construction services with in-house crews. Our services are focused on our core competences of civil, structural, mechanical and electrical. From foundations to electrical systems, roofing and maintenance, MJCS internally performs its own construction. This allows us to mobilize quickly to meet challenging schedule requirements and better control of cost. 

We offer the following: 

Airport Services

• HVAC and I&E

• Pipe Welding, Fabrication and Repair

• Vessel Repair and Overlay

Mechanical

• HVAC and I&E

• Pipe Welding, Fabrication and Repair

• Vessel Repair and Overlay

• Structural Steel Fabrication and Overlay

Structural

• Pre-fabricated metal buildings 

• Turnkey Projects: Design, Install and Buildout 

• Repairs, expansions and renovations to existing buildings 

• Covers 

Civil

• Grading and Excavation

• Soil Stabilization 

• Roadways & Parking 

• Dikes

• Underground Utilities 

• Flat Work

• Foundation & Piers

• Concrete Sleeper Racks

• Grouting

For more information on the internal services we offer, click below or contact us at (832) 334-6751.

Commercial Services - MJCS is proud to be your one-stop shop for all of the commercial services you may need. We offer air conditioning services, refrigeration services and HVAC repair to commercial facilities. We have worked with businesses in a variety of industries, and are always willing to discuss your individual needs. 

Our highly trained and experienced technicians have been in the industry for close to 50 years and are ready to service your commercial buildings with the highest level of industry knowledge and exceptional professionalism, always ensuring safety comes first. 

We know that commercial air conditioning is very different from residential, and we have the skills and expertise to take on your commercial air conditioning needs. While our heart beats in Texas, our services resonate across the nation. MJCS is not confined by state borders – we proudly extend our top-notch Mechanical and Maintenance services to clients nationwide. Trust MJCS for all of your commercial air conditioning service calls. We are ready to help!