Craftsmanship. Precision. Dedication.

About Us

MCS Mechanical Construction Service Inc was founded in January of 2023 in Geneseo, Illinois.

With over 25 years of experience in the HVAC, Plumbing, & Mechanical Service sector, MCS technicians are dedicated to providing exceptional customer service and to building long term relationships.

Heating Systems
  • Boilers-Steam & Hydronic
  • Industrial Process Burners
  • Make Up Air Units
  • Roof Top Units
  • Air Handling Units
  • Energy Recovery Units
  • Gas Fired Heating Equipment
  • Electric Heaters
  • Heat Pumps
  • In-Floor Radiant Systems
Cooling Systems
  • Chillers- Reciprocating & Screw
  • Roof Top Units
  • VRF Systems
  • Split Systems
  • Mini-Split Systems
  • Refrigeration Systems
  • Exhaust Fans
Domestic Water Systems
  • Water Heaters
  • Back Flow Preventer Testing & Repair

Specialty Systems

Pneumatic Building Temperature Control Systems

Solar Water Heating Systems

Contact us

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