24/7 Emergency Service: (414) 342-3829

J.M. Brennan Technicians at Your Facility

J.M. Brennan’s service team is made up of the most experienced technicians in the region. For select customers, J.M. Brennan sends our technicians to work at your facility long-term.

This individual will get to know your building better than anyone else. Each technician is equipped with his own expertise, and also has access to all J.M. Brennan engineers, insight, training, and tools. In other words, he’s directly responsive to your facility’s needs at any time, but has the backing of the largest mechanical contractor in Southeastern Wisconsin.

On-Site Maintenance Work

  • Repairs
  • Replacements
  • Preventive maintenance
  • Fabrication

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