The City of Dover, New Hampshire is requesting bids from qualified contractors to replace the existing air conditioning mini split systems and condenser unit located at City Hall. The City requires Mitsubishi as the product manufacturer for the new equipment. Work Included: • Removal and disposal of the existing condenser unit, mini-split units, thermostats, condensate pump, and associated refrigerant lines. • Supply and installation of a new Mitsubishi condenser unit sized appropriately for the spaces. • Supply and installation of new Mitsubishi brand mini-split units in all designated locations within City Hall. • Supply and installation of new high-pressure and low-pressure refrigerant lines, sized for the new Mitsubishi equipment. • Supply and installation of new condensate drain lines with condensate pump, sized for the new equipment. • Supply and installation of new digital thermostats compatible with the Mitsubishi minisplit units. • Electrical wiring for the new equipment, in accordance with all applicable codes. • Refrigerant leak detection and evacuation of the existing system (if applicable). • System charging with new refrigerant according to manufacturer's specifications. • Startup, commissioning, and testing of the new air conditioning system to ensure proper operation. • Providing a minimum one-year warranty on all materials and labor. General Requirements: • All work shall be performed by a qualified and licensed HVAC contractor with experience in installing Mitsubishi mini-split systems. • The contractor shall obtain all necessary permits and inspections required by the City of Dover. • All work shall be completed in a professional manner, minimizing disruption to the daily operations of City Hall. • Work hours shall be restricted to normal business hours, Monday through Friday, between 8:00 AM and 5:00 PM, unless otherwise approved by the City. • The contractor shall provide a detailed written proposal outlining the project timeline, a breakdown of material and labor costs, and warranty information. • The contractor shall remove all debris and waste materials from the project site upon completion. Product Requirements: • Condenser unit: New Mitsubishi brand condenser unit, sized appropriately for the spaces by a qualified HVAC contractor. • Mini-split units: New Mitsubishi brand mini-split units, sized and installed in all designated locations within City Hall by a qualified HVAC contractor. • Refrigerant lines: New high-pressure and low-pressure refrigerant lines, sized for the new Mitsubishi equipment. • Condensate lines: new condensate drain lines with condensate pump, sized for the new equipment. • Thermostats: New digital thermostats compatible with the Mitsubishi mini-split units. • Units that are installed must be BACnet compliant, allowing communication with our BMS software. Equipment Locations: • Assessor’s office suite • Deputy City Manager suite • Treasurer office suite
