About Us


Since 1969, Mainelli has grown to offer full service mechanical and plumbing contracting in Nebraska and Iowa. Under the leadership of the McNeil family, the Mainelli team works around the belief that the ideal building is a fully-integrated, streamlined entity with mechanical systems that support the people and the business it serves. With this guiding principle, Mainelli has become regarded as one of the best mechanical contractors in the area.

Today, Mainelli Mechanical Contractors, Inc. provides design, construction, fabrication, process piping, plumbing, medical gas piping, maintenance and services to clients in a variety of fields, including healthcare, commercial, institutional, data centers and telecommunication firms, government facilities, and educational facilities.


Mainelli always attempt to acquire the lowest possible cost for any equipment, material or subcontract work that may be required for the project. At the same time we maintain material and equipment to be of the highest quality. We are careful to ensure that whoever is awarded the order or contract is able to perform within the scope and time limits required to complete the project.

Our experience in the Omaha Area provides us extensive knowledge of the local building inspection criteria, code authorities and local agencies. We are committed to the success not only of our clients, but also of the communities in which our projects are completed.



We provide a safety culture for our employees and clients. Our culture is one of personal awareness, personal accountability, company education, provision, and support. Subsequently, our EMR safety ratings are among the best in our industry.

  • Project Superintendents are all OSHA 30 hr, CPR, and First Aid Certified.
  • All construction projects are 100% hardhat and safety glass projects.
  • We are proud to maintain a drug-free workplace.
  • Premier safety means premier value to our customers.


Mainelli expanded the fabrication shop to accommodate growth. Other than piping prefabrication, our work is performed on the contract site. Building and pipe construction equipment is company-owned, and all equipment is maintained through a controlled program. We are in the forefront in employing the latest technology in tools and equipment.