Rooftop at hyatt in owings millsFirst Class Mechanical, LLC, offers a full range of expert residential and commercial plumbing, heating, cooling, and related services, including:


  • Complete HVAC systems and service
  • Installation and repair of heating and air conditioning systems, including boilers, chillers, heat pumps, refrigeration equipment, air conditioning, chiller towers, and radiant heating systems
  • Gas line work
  • Start-up, regulate, repair, and shut down equipment to ensure equipment operates safetly within established limits
  • Replacement of defective pumps, valves, gaskets, piping, and bearings
  • Lubrication of moving parts, replace filters, and clean soot and corrosion to prevent malfunctions


  • Selection, installation, and use of cables, chains, and ropes to move heavy loads
  • Assemble and installing standing and running rigging


  • Respond to emergency jobs and assemble crews 24 hours a day, 7 days a week
  • Handle high voltage and hazardous conditions
  • Trained in confined spaces, hot permits, and lock-out/tag-out