12 Natural Gas Connection Water-cooled chiller Electrical panel Electricity Natural gas boiler In Out Cooling tower Air handling unit VAV box Electrical panel tricity In Out DOAS Ground source heat pump Floor mounted fan coil unit All air | Electric and fossil fuel | VAV system with Natural gas boiler and water-cooled chiller System comparisons Minimum outdoor air | FCU system with GSHP Energy performance Thermal comfort Acoustic comfort First cost Operating cost Maintenance Space requirements
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