One system heat maintenance in Lawrenceville. Arrived on site changed media supplied by customer and cleared barometric pressure ports. Checked ignition systems, electrical connections, amp draw and capacitance. Recommended installing surge protector to protect electrical systems on each piece of equipment as well as a compressor assist kit to prolong the life of the system. Also quoted to install UV purifier to complete purification cycle in mitigating any mold, bacteria, viruses or air borne allergens in the air stream and in the evaporator coil. Unit is operating normally at this time