M-F 7:30AM - 4:30 PM CST

PEORIA  309-693-4222
GALESBURG  309-342-8136

MSI's dedicated team offers their customers the exceptional service and knowledge that can only come from years of experience.


We look forward to serving your mechanical needs!


24 Hour Plumbing & HVAC Service

  • Electrical

    Our electrical department can help you with all your wiring, lighting and power needs.  We can also install data communication wiring and landscape lighting.  Indoors or out, MSI can do it all. 


    Commercial Residential


  • Fire Protection

    The MSI sprinkler division was created in 2007 to further expand our growing business and to provide top-of-the-line fire safety services to businesses in Central Illinois.   



  • HVAC/R

    MSI will go the extra mile to include a home comfort analysis, a custom designed system and a free sound reduction package with every installation to ensure that your system is right size and most efficient for your needs.


    Commercial Residential


  • Plumbing

    Whether it is a leaky toilet in need of repair or a complete kitchen or bath remodel, MSI can be the contractor that you turn to for help. We take pride in our work and we want you to have the highest quality service around.


    Commercial Residential


  • Process Piping

    Our skilled fitters can accomidated any of your process piping needs. We have pipe fabrication shops in Galesburg and Peoria.



  • Sheet Metal / Custom Fabrication

    Our sheet metal craftsmen will make sure that your sheet metal needs will be done right the first time and meet or exceed all building code regulations. We have sheet metal fabrication shops in Galesburg and Peoria.