At LJM, engineers and designers take a holistic approach in designing energy efficient heating, cooling, and ventilation systems to create quiet, safe and healthy environments.  Our staff draws upon an extensive range of professional experience with a wide variety of projects.

All designs consider our clients’ needs and wants always keeping in mind

  • Facility specific requirements/limitations
  • Existing conditions/equipment
  • Budgetary and aesthetic considerations


Areas of expertise include:

  • Boiler & chiller plants
  • DX cooling Systems
  • Hydronic heating & cooling systems
  • VAV and VRF systems
  • Exhaust Systems
  • Humidification systems
  • Refrigeration systems
  • Clean Room systems
  • Healthcare systems
  • Heat pump systems
  • Chilled Beam systems
  • Building management systems (BMS)




The electrical design team at LJM works hand in hand with all of the disciplines to design electrical systems to support and ensure reliable and stable functioning of all building system operations.  

Areas of expertise include:

  • Medium to high voltage service and distribution design
  • Back up generation designs
  • Emergency Power and Standby Systems
  • Uninterrupted Power Supplies
  • Interior and exterior Lighting systems





Not unlike the body’s own cardiovascular system, a properly designed plumbing system will convey the appropriate supply of water and gasses for all of the required applications as well as allowing for the safe discharge of waste.  Keeping the system in proper balance while applying measures to ensure conservation of resources is an important design consideration for LJM’s engineers.

Areas of expertise include:

  • Domestic water supply/recirculation systems
  • Sanitary waste and vent systems,
  • Natural gas and propane systems,
  • Water protection (backflow prevention),
  • Medical and laboratory gas systems
  • Compressed air systems
  • Water filtration systems
  • Primary storm water drainage systems
  • Acid waste systems



Fire Alarm/Protection

LJM’s engineers work to understand the unique characteristics of each building or facility and apply the appropriate code requirements to design reliable fire alarm/protection systems that are both efficient and cost-effective.  It is important that these systems are successful early in detecting, containing, controlling and/or extinguishing a fire.

Areas of Expertise include:

  • Smoke & Heat detection.
  • Fire Pump Design
  • Pumps & Controls
  • Sprinkler & Standpipe Systems
  • Smoke Management
  • NFPA 13 and 72
  • All Occupancies and Hazards
  • Wet or Dry Systems
  • Early Suppression, Fast Response (ESFR)
  • Deluge
  • Pre-Action
  • Special Hazards Suppression