This work will consist of HVAC system maintenance for the Town of Southbridge. See the attached list for location and type of equipment. The contractor must employ properly trained system technicians proficient in heating system repair and balancing with a minimum of five (5) years of experience performing such work. Burner technicians shall be certified to appropriate burner firing rate. The contractor shall perform inspections, calibrations, and adjustments to keep the heating systems in proper operating condition and to maintain temperature at setpoint monthly during the heating season (generally October through April). Heating systems, for the purpose of this contract, shall include internal units such as unit heaters. Where repairs are required, submit for approval a written proposal that describes the recommended repair and the cost to implement it.