From hvac service, to mechanical maintenance, to energy management, Lambert Commercial is your single source for developing and maintaining your buildings HVAC systems. We offer comprehensive service programs that will to provide maximum efficiency and productivity at minimum costs. Programs are customized to meet the specific needs of each customer and offered at one convenient, fixed fee. System Analysis and Maintenance Planning. To determine the best maintenance program for your facility, we conduct an extensive assessment of all mechanical devices. We also analyze how your heating and cooling systems operate and what conditions are critical to achieving your maintenance goals. We then develop a customized plan for all required service activities associated with your facility. Preventive Maintenance. Per your agreement, Lambert Commercial Services will inspect and lubricate each component in your system, making instrument tests, calibrations and adjustments necessary to assure continued optimum performance.